Here is the complete, chapter-wise, exam-ready reference for all questions listed. References: KS Narayan Reddy - The Essentials of Forensic Medicine and Toxicology, 36th ed. (2026); Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology; PC Dikshit's Textbook of Forensic Medicine and Toxicology; DiMaio's Forensic Pathology, 3rd ed.
FORENSIC MEDICINE & TOXICOLOGY
Complete Chapter-wise Question Bank with Answers
Reference: KS Narayan Reddy (36th ed.), Parikh, PC Dikshit, DiMaio
CHAPTER 1: MEDICAL JURISPRUDENCE & LEGAL CONCEPTS
Total Questions: 22 (Q1, Q22, Q32, Q37, Q42, Q43, Q59, Q64, Q65, Q75, Q86, Q100, Q102, Q106, Q107, Q117, Q127, Q136, Q139, Q150, Q151 + IPC 84)
Q1. Implications of Ignoring a Court Summons
Theory: A court summons is a legal document compelling a witness or party to appear before a court. A doctor may receive a summons to testify as a professional or expert witness.
| Implication | Detail |
|---|
| Contempt of Court | Punishable under Section 345 IPC - fine or imprisonment |
| Issue of Warrant | Bailable/non-bailable warrant may be issued |
| Adverse Inference | Court may draw adverse inference against the party |
| Penal Consequences | Fine up to Rs 500 (S.350 CrPC) or imprisonment up to 1 month |
| Professional Consequences | MCI/NMC can take disciplinary action against a doctor |
Exam Tip: A doctor who fails to appear after receiving a summons can be arrested under a warrant (Section 350 CrPC) and penalized for contempt of court.
Q22. Borrowed Servant Doctrine
Definition: When a servant (employee) is temporarily lent by a "general employer" to a "special employer," the special employer becomes liable for the servant's negligent acts during the period of hire.
BORROWED SERVANT DOCTRINE - Flow Diagram
General Employer (Hospital/Senior Surgeon)
|
Lends/Deputes
|
Special Employer (e.g., another surgeon)
|
Borrowed Servant (e.g., nurse/technician)
|
Negligent Act Occurs
|
LIABILITY β Special Employer bears vicarious liability
|
CONDITION: Special employer must have CONTROL over manner of work
| Key Point | Explanation |
|---|
| Control Test | Whoever controls the manner of work is liable |
| Example | A surgeon borrows a nurse from the hospital - nurse errs - surgeon may be liable |
| Limitation | If general employer retains control, liability stays with them |
| Indian Context | Upheld in various state medical negligence cases |
Q37. IPC Section 84 - Act of Person of Unsound Mind
Text: "Nothing is an offence which is done by a person who, at the time of doing it, by reason of unsoundness of mind, is incapable of knowing the nature of the act, or that he is doing what is either wrong or contrary to law."
IPC SECTION 84 - McNaghten's Rule Equivalent
INSANITY DEFENCE
|
βββββββββββ΄ββββββββββ
Did NOT know Did NOT know it
NATURE of act was WRONG/ILLEGAL
|
Complete Defence
|
NOT GUILTY by reason of
Unsoundness of Mind
|
But: Detained under
Section 335 CrPC
(Safe custody order)
| Element | Required Proof |
|---|
| Unsoundness of mind | Must exist at TIME of act |
| Incapacity | Unable to know nature OR wrong/unlawful nature |
| Burden of proof | On accused (beyond reasonable doubt) |
| Legal test | Equivalent to M'Naghten Rules (1843) |
Q42. Chief Examination and Cross-Examination
| Feature | Chief Examination | Cross-Examination |
|---|
| Definition | Examination of witness by the party who calls them | Examination by the opposing party |
| Purpose | Elicit facts favorable to calling party | Test credibility, expose inconsistencies |
| Leading questions | NOT allowed | ALLOWED (Section 143, Indian Evidence Act) |
| Order | First in sequence | Second in sequence |
| Re-examination | Allowed after cross | To clarify matters raised in cross |
| Scope | Limited to relevant facts | Wide - anything to discredit witness |
In medico-legal cases, a doctor as expert witness faces cross-examination on qualifications, basis of opinion, and consistency with other evidence. (Ref: Parikh's Textbook)
Q43. Documentary Evidence
Definition: Documentary evidence means all documents produced for the inspection of the court (Section 3, Indian Evidence Act, 1872).
DOCUMENTARY EVIDENCE
|
ββββββ΄βββββ
Primary Secondary
Evidence Evidence
(Original) (Copies, certified)
|
Types of Documents in Forensic Medicine:
β’ Post-mortem report (Section 174 CrPC)
β’ Dying declaration (Section 32 IEA)
β’ Injury certificate / Wound certificate
β’ Case sheets / Hospital records
β’ Birth and Death certificates
β’ Medico-legal certificates
β’ Expert witness reports
| Feature | Primary | Secondary |
|---|
| Definition | Original document | Copy, oral account of contents |
| Admissibility | Always admissible | Admissible only when original unavailable |
| Example | Original MLC register | Certified copy of PM report |
Q59. Infamous Conduct
Definition: Infamous conduct in professional respect means conduct which would be considered disgraceful or dishonourable by professional brethren of good repute and competency (Allbutt's case, 1889).
| Type of Infamous Conduct | Example |
|---|
| Covering a quack | Lending name/qualification to unqualified practitioner |
| Adultery/impropriety with patient | Improper relations with patient or family |
| Issuing false certificate | Providing untrue medical certificates for money |
| Drunkenness during practice | Attending patients under influence of alcohol |
| Improper disclosure | Revealing professional secrets without consent |
| Criminal abortion | Assisting in unlawful termination of pregnancy |
| Advertising | Self-advertisement in unprofessional manner |
NMC can remove a doctor's name from the register for infamous conduct. This is a penal erasure. (Ref: KS Narayan Reddy)
Q64. Valid Consent (Elements)
Definition: Consent is the voluntary agreement by a person with the capacity to decide, to accept a proposed medical intervention.
VALID CONSENT - Essential Elements
VALID CONSENT
|
ββββββββββββββΌβββββββββββββ
| | |
VOLUNTARY INFORMED CAPACITY
(Free from (All material (Age, mental
coercion) risks known) competence)
| | |
ββββββββββββββΌβββββββββββββ
|
EXPRESSED in writing
for major procedures
|
ββββββββββ΄βββββββββ
Written Implied
(Surgery, GA) (Examination,
BP check)
| Element | Requirement |
|---|
| Age | >18 years (legal adult); 12-18 with mature minor doctrine |
| Mental capacity | No psychosis, intoxication, undue influence |
| Information | Diagnosis, procedure, risks, alternatives, refusal rights |
| Voluntariness | No coercion, no fraudulent misrepresentation |
| Expressed | May be oral, written, implied, or implied from conduct |
Exceptions: Emergency, unconscious, court order, infectious disease control, minors.
Q65. Benefits of In Loco Parentis
Definition: "In the place of a parent" - a person or institution assumes parental rights and duties towards a child.
| Benefit | Application in Medical Context |
|---|
| Consent for treatment | School/institution can consent for minor's emergency treatment |
| Decision making | Authority to authorize vaccinations, routine procedures |
| Legal protection | Doctor protected when acting under in loco parentis authority |
| Boarding schools/orphanages | Warden may consent to necessary procedures |
| Armed forces/hostels | Authority can give consent for minors in their care |
Q75 / Q100. Doctrine of Res Ipsa Loquitur
Latin: "The thing speaks for itself"
Definition: In medical negligence, this doctrine applies when the negligence is so obvious from the facts that no expert testimony is needed to establish it.
RES IPSA LOQUITUR
|
Three Conditions Must Be Met:
βββββββββββββββββββββββββββββββββββββββββββ
β 1. Accident ordinarily would NOT occur β
β without negligence β
βββββββββββββββββββββββββββββββββββββββββββ€
β 2. Instrument/agency causing harm was β
β under EXCLUSIVE control of defendant β
βββββββββββββββββββββββββββββββββββββββββββ€
β 3. Plaintiff did NOT contribute to β
β the accident (no contributory neg.) β
βββββββββββββββββββββββββββββββββββββββββββ
|
Burden of proof SHIFTS to defendant
(doctor must prove absence of negligence)
| Classic Example | Explanation |
|---|
| Swab/instrument left inside patient | Clearly negligent - "speaks for itself" |
| Wrong limb amputated | Obvious negligence |
| Operation on wrong patient | Self-evident |
| Burn from diathermy pad | Exclusive control + abnormal outcome |
Q86 / Q139. Subpoena / Summons
| Feature | Subpoena / Summons |
|---|
| Definition | Legal writ compelling a person to appear in court |
| Types | (1) Subpoena ad testificandum - to give testimony; (2) Subpoena duces tecum - to produce documents |
| Who issues | Judge/Magistrate under Section 61-69 CrPC |
| Service method | Personal service; if fails, substituted service |
| Non-compliance | Contempt of court; warrant of arrest; fine |
| Medical relevance | Doctor compelled to give expert testimony or produce case records |
Conduct money (Q117): The amount paid to a witness to cover travel and other expenses when attending court. A witness is not obliged to attend without conduct money being paid. (Ref: Parikh's)
Q102 / Q150. Grievous Hurt (IPC Section 320)
IPC Section 320 defines 8 kinds of grievous hurt:
| No. | Type of Grievous Hurt |
|---|
| 1 | Emasculation (destruction of male genital organs) |
| 2 | Permanent privation of sight of either eye |
| 3 | Permanent privation of hearing of either ear |
| 4 | Privation of any member or joint |
| 5 | Destruction or permanent impairing of powers of any member/joint |
| 6 | Permanent disfiguration of head or face |
| 7 | Fracture or dislocation of bone or tooth |
| 8 | Any hurt which endangers life or causes severe bodily pain for 20 days in usual pursuits |
IPC Section 319: Simple hurt; IPC 320: Grievous hurt; IPC 322: Voluntarily causing grievous hurt. Punishment: S.325 - up to 7 years + fine. (Ref: KS Narayan Reddy, 36th ed.)
Q106. Privileged Communication
Definition: Communication made in confidence in the course of a professional relationship, which the law protects from disclosure without consent.
PRIVILEGED COMMUNICATION
|
ββββββββ΄βββββββ
Absolute Qualified
Privilege Privilege
(Cannot be (Can be disclosed
disclosed in public interest/
at all) legal duty)
|
Examples in Medicine:
β’ Doctor-patient relationship
β’ Husband-wife communication
β’ Legal professional privilege
β’ Parliamentary privilege
|
EXCEPTIONS (When disclosure is MANDATORY):
β’ Notifiable diseases
β’ Court order / Summons
β’ Fitness to drive (public safety)
β’ Gunshot wounds
β’ Child abuse
β’ STD prevention
Q107. Vicarious Liability
Definition: The legal principle by which a superior (employer/hospital) is held liable for the negligent acts of their subordinates (employees), committed during the course of employment.
| Principle | Application |
|---|
| "Respondeat Superior" | Let the master answer |
| Hospital liability | Hospital liable for acts of employees |
| Consultant liability | For acts of their team/assistants |
| Government liability | State liable for negligence of government doctors |
| Conditions | Act must be in scope of employment; master-servant relationship must exist |
Q127. IPC Section 375 (Rape)
Definition: A man is said to commit rape if he penetrates the vagina, mouth, urethra or anus of a woman with his penis, or any object/body part, without her consent or against her will.
IPC 375 - Six circumstances constituting rape (post-2013 amendment):
- Against her will
- Without her consent
- Consent obtained by fear/death/hurt
- Consent under misconception of fact
- Consent when man knows he is not her husband
- Consent given when woman is of unsound mind/intoxicated
- Girl below 18 years (consent immaterial)
- Woman unable to communicate consent
Punishment: IPC 376 - minimum 7 years to life; gang rape (376D) - minimum 20 years to life. (Ref: KS Narayan Reddy)
Q136. Medico-legal Importance of Age
AGE DETERMINATION - Medico-legal Significance
AGE DETERMINATION
|
ββββββββ΄βββββββββββββββ
Civil Law Criminal Law
β’ Majority (18 yr) β’ Age of criminal
β’ Voting rights responsibility (7yr)
β’ Marriage (18F/21M) β’ Juvenile justice
β’ Contract β’ Rape (POSCO)
β’ Inheritance β’ Capital punishment
|
Methods:
β’ Eruption of teeth (0-25 yr)
β’ Ossification of bones (Epiphyseal union)
β’ Gustafson's method (Dental histology)
β’ Anthropometric measures
β’ Secondary sex characteristics
β’ Skeletal X-rays
Q151. Inquest
Definition: An inquest is an official inquiry into the cause and circumstances of a sudden, violent, suspicious, or unnatural death.
| Type | Authority | Sections |
|---|
| Police Inquest | Police officer (Sub-Inspector and above) | Section 174 CrPC |
| Magistrate's Inquest | Magistrate (Executive/Judicial) | Section 176 CrPC |
| Coroner's Inquest | Coroner (Mumbai, Kolkata only) | Coroner's Act 1871 |
When Inquest is Held:
- Suicide, suspicious death, death in custody
- Accident, homicide, unidentified body
- Death under abnormal circumstances
Inquest Report includes:
- Identity of deceased
- Apparent cause of death
- Circumstances of death
- Nature of injuries (if any)
- Whether PM needed
CHAPTER 2: POST-MORTEM CHANGES & THANATOLOGY
Total Questions: 20 (Q10, Q11, Q12, Q13, Q30, Q34, Q38, Q40, Q49, Q50, Q77, Q84, Q85, Q89, Q93, Q130, Q140, Q154, Q155, Q158)
Q11. Causes of Sudden Death
SUDDEN DEATH - Classification
(Death within 24 hours of onset of symptoms)
SUDDEN DEATH
|
βββββββββββΌββββββββββ
Cardiovascular CNS Respiratory
| | |
β’ IHD (MC) β’ Stroke β’ Status
β’ Rupture β’ Epilepsy asthmaticus
of aorta β’ Epilepsy β’ Pulmonary
β’ Cardiac β’ Brain embolism
tamponade abscess β’ Aspiration
β’ SCD |
Other
|
β’ Peritonitis
β’ Ectopic preg
β’ PE
β’ Anaphylaxis
| System | Common Cause |
|---|
| Cardiovascular (most common) | IHD, cardiac arrhythmia, aortic rupture, PE |
| CNS | Cerebral hemorrhage, epilepsy, meningitis |
| Respiratory | Status asthmaticus, pulmonary embolism, SIDS |
| GIT | Ruptured ectopic, perforated peptic ulcer |
| Endocrine | Diabetic ketoacidosis, Addisonian crisis |
Most common cause of sudden natural death = Ischemic Heart Disease (IHD). (Ref: KS Narayan Reddy)
Q12. Casper's Dictum
Statement: "One week in air = two weeks in water = eight weeks in earth" (in terms of rate of decomposition).
| Medium | Rate | Relative |
|---|
| Open air | 1 week | 1x |
| Water (submerged) | 2 weeks | 2x slower |
| Earth/buried | 8 weeks | 8x slower |
Significance: Helps estimate post-mortem interval (PMI) and time since death when body is recovered from different environments.
Q13. Tache Noire de la Sclerotique (Tache Noire)
Definition: A dark brownish-black, triangular or oval spot that appears on the sclera after death when the eyes remain open.
| Feature | Detail |
|---|
| Location | Triangular area exposed between eyelids |
| Color | First yellow β then brown β then black |
| Mechanism | Drying and desiccation of exposed sclera after death |
| Time of appearance | Within 3-5 hours after death with open eyes |
| Significance | Sign of death; indicates eyes were open post-mortem |
| Confusion | May mimic conjunctival hemorrhage - distinguish by triangular shape |
Q30 / Q84 / Q89. Suspended Animation
Definition: A state of apparent death in which the vital functions are depressed to such a degree that life is not distinguishable, but where restoration of life is still possible.
SUSPENDED ANIMATION
|
βββββββ΄ββββββββββββββββββββββββββββ
| |
Physiological Pathological
β’ Deep sleep β’ Drowning (early)
β’ Hibernation β’ Electric shock
β’ Hypothermia β’ Chloroform/ether
β’ Newborn (first breath) β’ Cholera (algid)
β’ Yogic trance β’ Opium poisoning
| β’ Cerebral concussion
βββββββββββββββββββββββββββββββββββ
|
Signs to differentiate from DEATH:
β’ No rigor mortis
β’ No putrefaction
β’ Reflexes may be obtainable
β’ EEG activity present (unlike brain death)
β’ Pupil may react to light
β’ Tests: Magnifying glass fog test, needle test
Medico-legal Importance:
- Person may be incorrectly certified as dead
- Premature burial / burial alive
- Basis for Hindu/Buddhist religious practices
- Legal importance in inheritance (survivorship)
Q34. Differential Diagnosis of Rigor Mortis
| Condition | Similarities | Differences |
|---|
| Cadaveric spasm | Immediate stiffness, found in rigor | Appears IMMEDIATELY at death; no relaxation first; limited to one group of muscles; sign of vitality |
| Heat stiffening | Muscular rigidity | Due to heat coagulation of proteins; muscles feel leathery/cooked; no relaxation phase |
| Cold stiffening | Rigidity | Due to freezing; disappears on warming; no putrefaction |
| Pugilistic attitude | Arms flexed | Due to heat shrinkage of muscles; seen in fire deaths |
| Gas stiffening | Swelling + rigidity | Due to gas production in putrefaction; not true rigor |
Q38. Four Types of Early Post-Mortem Changes
EARLY POST-MORTEM CHANGES
|
ββββββΌβββββ¬ββββββββββ
1 2 3 4
| | | |
Cooling PM Rigor Hypostasis
of body Lividity Mortis (PM staining)
(Algor (Livor) |
mortis)
|
β’ Begins at 1-2 h
β’ Completes at 18-24 h
β’ Hensge nomogram
| Change | Onset | Completion | Notes |
|---|
| Algor mortis (cooling) | Immediate | ~24 hrs | 1.5Β°F/hr first 6 hrs; 1Β°F/hr after |
| Livor mortis (staining) | 30 min-2 hr | Fixed at 8-12 hr | Gravity-dependent; cherry red in CO |
| Rigor mortis (stiffening) | 2-6 hr | 12-18 hr; lasts 24-48 hr | Nysten's law: jawβtrunkβlimbs |
| Cadaveric spasm | Instantaneous | Persists | Only when death from intense emotion/violent effort |
Nysten's Law: Rigor appears first in involuntary muscles β then muscles of mastication β neck β trunk β upper limbs β lower limbs. (Ref: KS Narayan Reddy, 36th ed.)
Q40 / Q85. Viscera Preservation in Poisoning Cases
VISCERA PRESERVATION FOR CHEMICAL ANALYSIS
ROUTINE PRESERVATION
|
ββββββββββΌβββββββββ
| | |
Stomach Liver Kidney
(intact (250g) (one side,
with | intact)
contents)|
|
Intestines (30cm of each large + small)
Blood (50-100 ml in fluoride tube)
Urine (all available)
Visceral fat (50g)
| Suspect Poison | Additional/Special Preservation |
|---|
| Volatile poisons (alcohol, chloroform) | Sealed air-tight container; no preservative |
| Heavy metals (lead, arsenic) | Bone, hair, nails, skin |
| CO poisoning | Blood only (sealed) |
| Cyanide | Lung tissue + blood (sealed) |
| Insecticide/OPC | Liver + brain |
| Snake bite | Bitten tissue + serum |
| Opium/alkaloids | Brain, spinal cord |
Standard Preservative: Saturated NaCl solution (chemical analysis). NOT formalin.
Containers: Clean, wide-mouthed glass jars; sealed; labeled (case no., date, name, body part).
Q49. Post-mortem Caloricity
Definition: A transient rise in body temperature occurring immediately after death, due to:
- Biochemical reactions continuing after somatic death (ATP breakdown, glycolysis)
- Bacterial multiplication in body
- Persistence of metabolic activity in cells
| Feature | Detail |
|---|
| Duration | 30 minutes to a few hours |
| Magnitude | 1-2Β°F above ante-mortem temperature |
| Significance | May delay the cooling curve; affects PMI calculation |
| Seen in | Septicemia, heat stroke, strychnine poisoning, tetanus |
Q50. Artificial Bruise vs True Bruise
| Feature | True Bruise (Antemortem) | Artificial Bruise (Post-mortem) |
|---|
| Definition | Extravasation of blood due to rupture of vessels with vital reaction | Discoloration caused after death |
| Mechanism | Trauma + vital reaction | Physical pressure/manipulation of body |
| Histology | Inflammatory cells, hemosiderin, fibrin | No inflammatory cells |
| Color change | Red β blue β green β yellow (days) | No color change over time |
| Swelling | Present | Absent |
| Vital reaction | Present (leucocytic infiltration) | Absent |
| Fixity | Tissue is discolored at site | May be on surface only |
Q77 / Q93. Cadaveric Spasm
Definition: An instantaneous, involuntary muscular stiffening that occurs at the moment of death, without the preliminary relaxation that precedes ordinary rigor mortis.
RIGOR MORTIS vs CADAVERIC SPASM
Feature Rigor Mortis Cadaveric Spasm
βββββββββββββββββββββββββββββββββββββββββββββββββββββ
Onset 2-6 hours INSTANTANEOUS
Prior relaxation Yes No (no flaccid phase)
Muscles All muscles Usually one group
(hands, arms)
Cause ATP depletion Extreme nervous
(gradual) excitement/violent
emotion at death
Duration 24-48 hours Same as rigor
Forensic sig. PMI estimation Vitality sign
(grass in drowning,
weapon in suicide)
Forensic Importance of Cadaveric Spasm:
- Confirms death occurred at scene (weapon found in hand = suicide)
- Confirms drowning was ante-mortem (weed/grass clutched in hand)
- Useful in identifying the body's last actions
- Cannot be simulated post-mortem
Q130. Late Post-mortem Changes
| Change | Time (Tropical) | Features |
|---|
| Putrefaction | 24-48 hrs; Green discoloration RIF | Cadaverine, putrescine; smell |
| Adipocere | 3-6 weeks (wet) | Saponification of fat; soapy feel; alkaline; preserves morphology |
| Mummification | 3 months (dry, hot) | Dehydration; leather-like; brown, odorless |
| Maceration | 8-14 days (fetus in utero) | Softening; skin slippage; reddish fluid |
| Skeletonization | 1-3 years (buried) | Only bones remain; varies with environment |
LATE POST-MORTEM CHANGES FLOW
DEATH
|
βββ[MOIST + WARM]βββ PUTREFACTION βββ Skeletonization
|
βββ[WET environment]βββ ADIPOCERE
|
βββ[HOT + DRY]βββ MUMMIFICATION
|
βββ[IN UTERO]βββ MACERATION
Q155. Post-mortem Staining (Livor Mortis)
Definition: The purplish-red discoloration of skin in dependent parts of body after death, due to gravitational settling of blood in post-capillary venules.
| Feature | Detail |
|---|
| Onset | 30 min - 2 hours after death |
| Color | Purplish-red (cherry red in CO; bright pink in cold; pale in anemia) |
| Distribution | Dependent parts; absent over pressure areas |
| Fixed | After 8-12 hours (hemolysis fixes it) |
| Significance | Indicates position at death; can estimate PMI |
Q158. PM Staining vs Bruising
| Feature | PM Staining (Livor) | Bruise (Antemortem) |
|---|
| Location | Dependent parts | Any site (trauma site) |
| Color | Uniform, diffuse purple | Variable (red, blue, green, yellow) |
| Cut section | Blood wipes off vessels | Blood in TISSUE spaces |
| Pressure test | Blanches (before fixation) | Does NOT blanch |
| Swelling | Absent | Present |
| Histology | RBCs in vessels | RBCs in interstitium + inflammation |
| Distribution | Gravity-dependent | At site of impact |
Q10 (Long Q - Drowning decomposition) / Q140. Methods of Removal of Organs in PM Examination
POST-MORTEM EXAMINATION - Organ Removal Methods
1. VIRCHOW'S METHOD (most common)
Each organ removed separately
|
2. ROKITANSKY'S METHOD
Organs examined in situ, partially removed
|
3. LETULLE'S METHOD (EN MASSE)
All organs removed en bloc, then separated
|
4. GHON'S METHOD
Organs removed in groups by body system
|
5. Modified methods as per case requirements
Q154. Sample Collection Protocols During Autopsy
| Sample | Container | Volume/Amount | Preservative |
|---|
| Blood | Fluoride-oxalate (alcohol); EDTA (DNA/drugs) | 50-100 ml | As above |
| Urine | Clean bottle | All available | None |
| Vitreous humor | Syringe β clean bottle | 1-2 ml | None |
| Stomach + contents | Wide-mouth glass jar | Entire | Sat. NaCl |
| Liver | Wide-mouth glass jar | 250g | Sat. NaCl |
| Kidney | Glass jar | One complete | Sat. NaCl |
| Brain | Glass jar | Whole/250g | Sat. NaCl |
| Vaginal swab | Sterile swab | Γ 2 | Refrigerated |
| Hair | Envelope | 20-30 strands root included | Dry |
| Nails | Envelope | All clippings | Dry |
| Bone | Sealed jar | Rib fragment | Dry |
Q171. Shotgun Entry Wounds at Various Ranges
| Range | Wound Characteristics |
|---|
| Contact | Single large wound; cruciate/star-shaped tear; soot and burning; all pellets enter |
| Close range (<30 cm) | Round/oval single wound; blackening and tattooing; all pellets together |
| Short range (30-60 cm) | Single wound with some satellite pellets; stippling |
| Medium range (1-3 m) | Scattering begins; central wound + pellet holes around |
| Long range (>3 m) | Individual pellet wounds; no tattooing; scattered pattern |
CHAPTER 3: ASPHYXIAL DEATHS
Total Questions: 6 (Q4, Q7, Q83, Q135 + Long Q3, Q15)
Q4. Post-mortem Signs of Asphyxia
ASPHYXIA - PM Signs
|
ββββββΌββββββββββββββββββββββββββββββββββββββ
External Internal Special
| | |
β’ Congestion & β’ Engorgement of β’ Petechiae
cyanosis right heart (Tardieu spots)
β’ Petechiae β’ Distended β’ Froth
(face, neck, veins β’ Specific to
conjunctiva) β’ Pulmonary type of asphyxia
β’ Odema face edema
β’ Cyanosis β’ Blood fluid,
lips/nail dark
| Sign | Description |
|---|
| Cyanosis | Bluish discoloration of skin, lips, nails |
| Petechiae/Tardieu spots | Petechial hemorrhages in conjunctiva, skin, viscera |
| Congestion | Face and neck congested, flushed |
| Froth | Fine white froth at mouth/nostrils (drowning) |
| Pulmonary edema | Heavy, congested lungs (>500g each) |
| Fluid dark blood | Unclotted, dark blood in heart and vessels |
Q7 / Q135. Hanging vs Strangulation
| Feature | Hanging | Strangulation |
|---|
| Definition | Compression of neck by a ligature, tightened by body weight | Compression of neck by ligature (manual or with cord) WITHOUT body weight |
| Mode | Usually suicidal; rarely accidental or homicidal | Usually homicidal; rarely suicidal |
| Ligature mark | Oblique, upward toward knot; prominent on sides | Horizontal, at same level all around; complete |
| Mark position | Above thyroid cartilage | Below thyroid cartilage |
| Face | Pale (typical hanging) | Congested, plethoric |
| Petechiae | Rare | Common (conjunctiva, face) |
| Hyoid fracture | Rare | More common |
| Carotid body | Pressure β bradycardia/syncope | Pressure β death |
| PM findings | Cervical cord injury, point of suspension marks | Bilateral neck bruising |
Q83. HCN (Hydrogen Cyanide) Poisoning
| Feature | Detail |
|---|
| Source | Prussic acid, bitter almonds, cassava, industrial emissions, jewelers, fire gases |
| Mechanism | Inhibits cytochrome oxidase (Complex IV) β histotoxic hypoxia β cellular asphyxia |
| Fatal dose | 50-60 mg HCN (0.5 mg/kg); 1-2 mg/kg of KCN |
| Smell | Bitter almonds |
Signs & Symptoms:
- Headache, dizziness, confusion
- Bright red flushed skin (oxyHb not utilized β venous blood looks arterial)
- Rapid unconsciousness, convulsions
- Death within minutes (high dose)
Treatment:
- Remove from exposure, pure O2
- Amyl nitrite (inhaled), then sodium nitrite IV (3%, 10ml) β forms methemoglobin that competes with cytochrome oxidase
- Sodium thiosulfate IV (25%, 25ml) β converts CN to thiocyanate (excreted in urine)
- Hydroxocobalamin (Cyanokit) 5g IV - first-line in many countries
PM Findings: Bright cherry-red blood, smell of bitter almonds, pink viscera, petechiae, pulmonary edema.
CHAPTER 4: MECHANICAL INJURIES
Total Questions: 19 (Q5, Q9, Q14, Q18, Q26, Q29, Q45, Q67, Q71, Q73, Q82, Q118, Q134, Q137, Q141 + Long Q1, Q5, Q10)
Q29 / Q141. Abrasions - Classification & Medico-legal Importance
Definition: Abrasion is an injury to the superficial layers of the skin caused by friction or pressure against a rough surface.
ABRASION - CLASSIFICATION
|
ββββββΌβββββββββ¬ββββββββββββββββββββββ
Scratch Graze Pressure/ Imprint
(linear) (multi- Impact Abrasion
linear) (contact area) (pattern mark)
|
Examples: fingernail marks (scratch); road rash (graze); tire marks (imprint); hanging mark (pressure)
| Feature | Antemortem | Postmortem |
|---|
| Color | Red to brown | Yellow, parchment-like |
| Crusting | Yes (dried exudate) | No (dries flat) |
| Vital reaction | Present | Absent |
Medico-legal Importance of Abrasions:
- Indicate direction of force (direction of skin tags)
- Indicate site of impact
- Indicate type of surface (patterned abrasion)
- Reveal sex-related assault (fingernail marks)
- Hanging vs strangulation (abrasion collars)
- Entry wound features (abrasion collar of firearm)
- Vital reaction present = ante-mortem event
Q82 / Q137. Contusion (Bruise)
Definition: Extravasation of blood into the tissues due to rupture of blood vessels caused by blunt force trauma, without break in skin.
CONTUSION (BRUISE) - COLOR CHANGE
Fresh (0-2 days): RED/BLUE
|
3-5 days: BLUE-GREEN (biliverdin)
|
5-7 days: GREEN-YELLOW (bilirubin)
|
7-14 days: YELLOW (hemosiderin)
|
2-3 weeks: DISAPPEAR
| Feature | Detail |
|---|
| Mechanism | Blunt force β vessel rupture β blood in tissues |
| Types | Subcutaneous; deep (internal organ); vital points |
| Factors affecting | Site (loose tissue = more bruise), age, skin color, coagulation status |
| Vital reaction | Present (leucocytic infiltration within 4-6 hours) |
| Patterned bruise | Reveals shape/type of weapon used |
Q118. Laceration
Definition: A tear or split of the skin or deeper structures, produced by blunt force impact, causing the tissue to give way.
| Feature | Laceration | Incised Wound |
|---|
| Cause | Blunt force | Sharp edge |
| Edges | Irregular, ragged | Clean, regular |
| Wound walls | Irregular, crushed | Smooth |
| Bridge | Tissue bridges present | Absent |
| Hair | Not cut | Cut cleanly |
| Bruising | Surrounding bruise present | Absent |
| Depth | Usually shallow | May be deep |
Q26 / Q45. Primary and Secondary Impact Injuries (RTA)
RTA INJURIES - CLASSIFICATION BY MECHANISM
PEDESTRIAN
|
βββ Primary Impact: Initial contact with vehicle
β (bumper fracture - lower 1/3 tibia/fibula)
|
βββ Secondary Impact: Body hits bonnet/windscreen
β (head injury, chest injury)
|
βββ Tertiary Impact: Body hits ground
β (random injuries)
|
βββ Crush/Run-over injuries
Q14. Filigree Burns (Lightning Burns)
Definition: Fern-like or branching reddish or brownish skin patterns produced by lightning strike (also called Lichtenberg figures or arborescent/keraunographic marks).
| Feature | Detail |
|---|
| Cause | Lightning strike; electrical flashover |
| Pattern | Fern-leaf / branching pattern; disappears within 24-48 hours |
| Mechanism | Subcutaneous hemorrhage along electrical pathways |
| Site | Usually on limbs, trunk |
| Duration | Transient - must be documented immediately |
| Significance | Pathognomonic of lightning strike; confirms electrocution |
Q67. Ante-mortem vs Post-mortem Burns
| Feature | Ante-mortem Burns | Post-mortem Burns |
|---|
| Vital reaction | Present (erythema, blisters) | Absent |
| Blister content | Protein, leucocytes, albumin | Serous fluid or empty |
| Blister base | Red, inflamed | Pale, waxy |
| Zone of hyperemia | Present around burn | Absent |
| CO in blood | Present (HbCO >10%) | Absent (or minimal) |
| Soot inhalation | Present in airways | Absent |
| Smoke in lungs | Soot in bronchi, alveoli | Absent |
| Lardaceous marks | Not seen | May be present |
| Pugilistic attitude | May be present | Common |
Q73. Homicidal vs Suicidal Cut-throat Wounds
| Feature | Homicidal | Suicidal |
|---|
| Location | Any level | Typically below chin |
| Depth | Uniform deep from start | Hesitation cuts present |
| Direction | Irregular/varied | Left to right (right-handed) |
| Length | Variable | Usually single decisive cut |
| Number | May be multiple | Often single (may have trial cuts) |
| Tentative cuts | Absent | Present (hesitation marks) |
| Defensive injuries | Present on victim's hands | Absent |
| Clothing | May be cut | Usually undisturbed |
| Setting | Evidence of struggle | Usually isolated location |
Q134. Ante-mortem vs Post-mortem Wounds
| Feature | Ante-mortem | Post-mortem |
|---|
| Vital reaction | Present | Absent |
| Bleeding | Active, clots form | Oozing only; no clot |
| Swelling/inflammation | Present | Absent |
| Retraction | Wound edges retract | Edges do not retract |
| Histology | PMN, macrophages, fibroblasts over time | Absent |
| Ecchymosis | Around wound | Absent |
CHAPTER 5: TOXICOLOGY & POISONING
Total Questions: 22 (Q17, Q20, Q21, Q35, Q36, Q48, Q61, Q79, Q95, Q103, Q105, Q143, Q161, Q166 + Long Q2, Q4, Q6, Q8, Q9, Q12, Q14, Q16)
Q17. Venomous Snake Bite - Key Clinical Signs
SNAKE VENOM TYPES - CLINICAL FEATURES
SNAKE VENOM
|
ββββββββ΄βββββββββββ
NEUROTOXIC VASCULOTOXIC
(Cobra, Krait) (Viper)
| |
β’ Ptosis β’ Local swelling
β’ Diplopia β’ Bleeding/bruising
β’ Dysphagia β’ Necrosis
β’ Respiratory β’ DIC
paralysis β’ Hemolysis
β’ Minimal local β’ Hematuria
reaction β’ Renal failure
β’ Death by β’ PT/APTT prolonged
asphyxia
Key Bedside Tests (viper bite):
- 20-minute Whole Blood Clotting Test (20WBCT): Place 2 ml blood in glass tube; if unclotted at 20 min β systemic envenomation
- Urine dipstick for hematuria/proteinuria
Q20. Aluminium Phosphide Poisoning (Management)
Source: Celphos, Quick Phos (grain preservative tablets - 3g tablets releasing phosphine gas PH3)
ALP POISONING - MANAGEMENT FLOW
EXPOSURE (ingestion)
|
PH3 released in stomach (hydrolysis)
|
Multiple organ toxicity (heart, liver, kidney)
|
MANAGEMENT:
ββββββββββββββββββββββββββββββββββββββββββββ
β 1. AIRWAY + O2 - no mouth-to-mouth β
β 2. NO gastric lavage if >1hr (gas gone) β
β 3. Emesis if early (<30 min) β
β 4. Coconut oil orally (reacts with PH3) β
β 5. Magnesium sulphate laxative β
β 6. IV fluids (hypotension common) β
β 7. Dopamine for cardiac support β
β 8. NO specific antidote β
β 9. Treat metabolic acidosis (bicarb) β
ββββββββββββββββββββββββββββββββββββββββββββ
PM Findings: Garlic odor, blood-stained froth, blackish discoloration of mucosa, necrosis.
Q21. Acute Arsenic Poisoning - Early Symptoms
Source: Rat poison, weedkillers, insecticides, wood preservatives (As2O3 - "king of poisons")
| Phase | Symptoms |
|---|
| Metallic taste immediately | Garlic odor breath, burning in mouth/throat |
| GIT (within 1 hr) | Nausea, vomiting, severe rice-water diarrhea (cholera-like), abdominal cramps |
| Cardiovascular | Hypotension, tachycardia, shock |
| CNS | Headache, confusion, convulsions, coma |
| Late | Mees' lines on nails (3-4 weeks later), peripheral neuropathy |
Treatment: BAL (British Anti Lewisite/Dimercaprol); DMSA (Succimer); IV fluids; gastric lavage.
Q95. Arsenic Poisoning vs Cholera:
| Feature | Arsenic Poisoning | Cholera |
|---|
| Onset | Sudden (after food/drink) | Epidemic, gradual |
| Smell | Garlic | No specific smell |
| Stool | Rice-water + blood | Rice-water (pure) |
| Epidemiology | Individual/cluster | Epidemic pattern |
| Vomiting | Present | Present |
| Urine | Shows arsenic | No arsenic |
| PM: Stomach | Congested, hemorrhagic | No specific finding |
| PM: Liver | Shows arsenic | No arsenic |
Q35. War Gases (Chemical Warfare Agents)
| Type | Agent | Mechanism | Signs |
|---|
| Choking gases | Chlorine (Cl2), Phosgene (COCl2) | Pulmonary edema | Cough, dyspnea, pulmonary edema |
| Blister gases (Vesicants) | Mustard gas (HD), Lewisite | DNA alkylation, tissue necrosis | Blisters, eye damage, lung damage |
| Blood gases | HCN, Cyanogen chloride | Cytochrome inhibition | Asphyxia |
| Nerve gases | Sarin (GB), Tabun (GA), VX | Cholinesterase inhibition | SLUDGE, paralysis |
| Irritants/Tear gas | CS, CN, CR | Mucosal irritation | Lacrimation, rhinorrhea |
Q36 / Q79 / Q105. Methanol (Methyl Alcohol) Poisoning - Treatment
Mechanism: Methanol β Formaldehyde (formic acid) β Metabolic acidosis + Optic nerve damage
METHANOL POISONING - TREATMENT FLOW
METHANOL INGESTION
|
Competition for alcohol dehydrogenase
|
TREATMENT:
ββββββββββββββββββββββββββββββββββββββββββββββββ
β 1. ETHANOL IV or oral (loading + maintenance)β
β - Competes with methanol for ADH β
β - Target blood alcohol 100 mg/dl β
β OR β
β FOMEPIZOLE (4-MP) - ADH inhibitor β
β (preferred, fewer side effects) β
β 2. Sodium bicarbonate - correct acidosis β
β 3. Folinic acid (leucovorin) - formate β
β metabolism β
β 4. Hemodialysis - if acidosis severe β
β (methanol >50mg/dl or visual symptoms) β
β 5. Gastric lavage if <1hr β
ββββββββββββββββββββββββββββββββββββββββββββββββ
Hallmark: Latent period of 8-36 hours (before formic acid accumulates); visual disturbances ("snowstorm vision"); severe anion-gap metabolic acidosis.
Q48 / Q143 / Q166. Datura Poisoning
Active principle: Hyoscine (scopolamine), Hyoscyamine, Atropine (belladonna alkaloids)
Mnemonic for features: "Blind as a bat, Mad as a hatter, Red as a beet, Hot as a hare, Dry as a bone"
| Feature | Mechanism |
|---|
| Dilated pupils (mydriasis) | Muscarinic block |
| Dry mouth, dry skin | Antimuscarinic |
| Flushing (red skin) | Cutaneous vasodilation |
| Hyperthermia | Inhibited sweating |
| Tachycardia | Vagal block |
| Urinary retention | Bladder muscle block |
| Delirium, hallucination | CNS anticholinergic |
| Drunken gait | Cerebellar involvement |
Fatal dose: 4mg atropine; Fatal period: 24 hours
Treatment:
- Gastric lavage with KMnO4 or tannic acid
- Physostigmine (specific antidote) 2mg IV slow (crosses BBB, reverses CNS effects)
- Benzodiazepines for seizures
- Catheterization for urinary retention
- Cooling measures for hyperthermia
Q61. OPC (Organophosphorus Compound) Poisoning - Management
Mechanism: Irreversible inhibition of acetylcholinesterase β accumulation of ACh at all cholinergic synapses
OPC POISONING - MANAGEMENT
MUSCARINIC (SLUDGE):
Salivation, Lacrimation, Urination, Defecation,
GI distress, Emesis + Bronchospasm, Bradycardia
|
NICOTINIC:
Muscle fasciculations β weakness β paralysis
|
MANAGEMENT:
ββββββββββββββββββββββββββββββββββββββββββββββββ
β 1. DECONTAMINATION - remove clothes, wash β
β 2. ATROPINE (FIRST LINE ANTIDOTE) β
β Large doses: 2-4mg IV every 5-10 min β
β until secretions dry up β
β 3. PRALIDOXIME (PAM) 1-2g IV (within 24-48hr)β
β Reactivates cholinesterase (before "aging")β
β 4. Gastric lavage + activated charcoal β
β 5. Treat seizures with benzodiazepines β
β 6. Ventilatory support β
β 7. Monitor cholinesterase levels β
ββββββββββββββββββββββββββββββββββββββββββββββββ
Q103 / Q161. Medico-legal Duties of a Doctor in Suspected Poisoning
DOCTOR'S DUTIES - SUSPECTED POISONING
CLINICAL DUTIES LEGAL DUTIES
| |
1. Treat patient first 1. Inform police
2. Take history 2. Send vomitus/
3. Examine carefully lavage to FSL
4. Note all findings 3. Preserve samples
5. Detailed case sheet 4. Write MLC
6. Collect samples 5. Maintain secrecy
6. Cooperate with
investigation
7. Testify if summoned
CHAPTER 6: SEXUAL OFFENCES & REPRODUCTIVE HEALTH
Total Questions: 13 (Q27, Q39, Q52, Q56, Q60, Q68, Q74, Q78, Q104, Q112, Q152, Q164 + Long Q13)
Q39. Four Types of Unnatural Sexual Offences (IPC Section 377)
| No. | Offence | Definition |
|---|
| 1 | Sodomy | Anal intercourse between males (now partially decriminalized per SC judgment Navtej Singh Johar, 2018) |
| 2 | Tribadism | Sexual acts between females |
| 3 | Bestiality | Sexual intercourse with animals |
| 4 | Buccal coitus | Oral sexual intercourse |
Q56 / Q68 / Q164. Positive Signs of Pregnancy
| Sign | Trimester | Method |
|---|
| Fetal heart sounds | 2nd trimester | Auscultation/Doppler |
| Fetal movements felt by examiner (quickening sign) | 2nd trimester | Ballottement |
| Fetal skeleton on X-ray/USG | 2nd trimester | Imaging |
| Fetal parts felt by palpation | 2nd-3rd trimester | Abdominal palpation |
Confirmatory signs:
- USG: Gestational sac (5 weeks), FHR (6 weeks), fetal parts
- Blood: Beta-hCG (positive from day 8-10 post-conception)
- Urine: HCG immunoassay positive
Q60 / Q104 / Q152. MTP Act (Medical Termination of Pregnancy Act, 1971 - amended 2021)
MTP ACT 2021 - WHEN TERMINATION IS ALLOWED
GESTATIONAL AGE:
Up to 20 weeks:
- One registered medical practitioner's opinion
- Risk to life/physical/mental health
- Contraceptive failure (ALL women, not just married)
20-24 weeks (Special categories under Rule 3B):
- Two RMP's opinion required
- Rape/incest survivors
- Minors
- Mentally ill/physically disabled women
- Fetal anomalies incompatible with life
- Change in marital status (widow, divorcee)
>24 weeks:
- State Medical Board decision
- Substantial fetal abnormalities
CONFIDENTIALITY:
Name of woman must NOT be disclosed
(punishable under S.5A of Act)
Q74. Stillborn vs Deadborn Fetus
| Feature | Stillborn | Deadborn (Macerated) |
|---|
| Definition | Born dead after 28 weeks gestation | Fetus dead in utero for days; born dead |
| Skin | Normal or intact | Skin slippage (epidermis peeling) |
| Color | Normal | Reddish-brown discoloration |
| Organs | Fresh | Soft, autolyzed |
| Hydrostatic test | Negative (lungs) | Negative |
| Overlapping skull bones | Absent | Present (Spalding's sign) |
| Legal significance | Death must be registered | May not need registration |
Q78. Types of Hymen
| Type | Description | Medico-legal Note |
|---|
| Annular | Circular rim | Most common |
| Crescentic | Half-moon shaped | Common in adolescents |
| Cribriform | Multiple small openings | May prevent coitus |
| Septate | Divided by band | May prevent coitus |
| Imperforate | No opening (pathological) | Medical emergency |
| Fimbriated | Irregular, frilled | Must not be confused with old tears |
| Elastic | Distensible without tearing | Sexual intercourse possible without tear |
Q112. True Virgin vs False Virgin
| Feature | True Virgin | False Virgin |
|---|
| Definition | No penile penetration | Had intercourse but hymen "appears" intact |
| Hymen | Intact, no old tears | Elastic/fimbriated hymen; healed tears |
| Introitus | Narrow | May be wider |
| Hymeneal orifice | Small, admits only tip of finger | May admit two fingers |
| Medical note | No sign is 100% reliable | History + examination together |
CHAPTER 7: FORENSIC PSYCHIATRY & MENTAL HEALTH
Total Questions: 11 (Q15, Q16, Q54, Q69, Q90, Q98, Q99, Q110, Q126, Q131, Q168)
Q15. Impulse (Forensic Psychiatry)
Definition: An impulse is a sudden, irresistible urge to perform an act without adequate deliberation, motive, or forethought, arising from an abnormal mental state.
| Disorder | Impulse manifestation |
|---|
| Kleptomania | Irresistible impulse to steal |
| Pyromania | Irresistible impulse to set fires |
| Trichotillomania | Irresistible hair-pulling |
| Intermittent explosive disorder | Explosive aggression |
Q54 / Q99. Transvestism
Definition: A condition in which a person (usually male, heterosexual) derives sexual pleasure or satisfaction from wearing clothes of the opposite sex. Distinguished from transsexualism (gender identity disorder) where the person wants to permanently be the other gender.
| Feature | Transvestism | Transsexualism |
|---|
| Sexual orientation | Usually heterosexual | Variable |
| Dress | Episodic, for pleasure | Permanent, identity |
| Genitalia | Satisfied with own | Wants surgical change |
| Legal | Not a crime | Legal gender change possible |
Q69. Hallucination
Definition: A perception without a stimulus. A person perceives something that does not exist in reality, but experiences it as real.
| Type | Example | Common In |
|---|
| Auditory | Hearing voices | Schizophrenia |
| Visual | Seeing colors/figures | Delirium, drugs, alcohol |
| Tactile | Feeling insects on skin ("formication") | Cocaine ("cocaine bugs") |
| Olfactory | Smelling non-existent odors | Temporal lobe epilepsy |
| Gustatory | Tasting things | Rare; TLE |
Q90 / Q131 / Q168. Delusions
Definition: A fixed, false, firmly-held belief, out of keeping with the person's cultural background, not amenable to reason, not based on evidence.
| Type | Description | Disease |
|---|
| Persecutory | "Someone is trying to harm me" | Schizophrenia |
| Grandiose | "I am God/President" | Mania, schizophrenia |
| Referential | Everything refers to them | Schizophrenia |
| Nihilistic | "I am dead/organs rotting" | Depression |
| Jealous (Othello syndrome) | Partner is unfaithful | Alcoholism |
| Erotomania (de Clerambault) | Famous person loves them | Schizophrenia |
| Somatic | "My body is infested" | Somatic delusions |
Q98 / Q58. Magnan's Syndrome (Cocaine Psychosis)
Definition: A specific tactile hallucination associated with cocaine abuse where the person feels as if insects, worms, or foreign bodies are crawling under the skin.
- Also called formication or cocaine bugs
- Described by Valentin Magnan (1889)
- Patient scratches skin repeatedly β excoriations
- Type of tactile hallucination
- Seen in: cocaine, amphetamine, and delirium tremens (alcohol withdrawal)
Q110. Right-Wrong Test (McNaghten's Rule)
Origin: R v M'Naghten (1843) - House of Lords
The Rule:
"To establish a defence on the grounds of insanity, it must be clearly proved that, at the time of committing the act, the accused was labouring under such a defect of reason from disease of the mind as not to know the nature and quality of the act he was doing; or, if he did know it, that he did not know he was doing what was wrong."
| Test Component | Meaning |
|---|
| Did not know the NATURE of the act | Did not understand what they were physically doing |
| Did not know it was WRONG | Could not distinguish right from wrong |
In India, codified as IPC Section 84.
Q126. Munchausen Syndrome by Proxy
Definition: A form of medical child abuse where a caregiver (usually mother) fabricates or induces illness in a person under their care (usually a child) to seek medical attention.
| Feature | Detail |
|---|
| Perpetrator | Usually mother |
| Victim | Usually child <5 years |
| Signs | Symptoms only when caregiver present; improve in hospital without caregiver |
| Methods | Fabrication of history; inducing illness (poisons, suffocation) |
| Legal | Child abuse; can be homicide |
| Also called | Factitious Disorder Imposed on Another (FDlA) - DSM-5 |
CHAPTER 8: IDENTIFICATION & FORENSIC ANTHROPOLOGY
Total Questions: 8 (Q24, Q92, Q107, Q108, Q113, Q145, Q157 + Gustafson Q44)
Q24 / Q145. Fingerprint Patterns (Dactylography)
Dactylography: The science of identification using fingerprints.
FINGERPRINT PATTERNS
|
ββββββΌβββββββββββββ
Loop Whorl Arch
(65%) (30%) (5%)
| | |
Ulnar Concentric Plain arch
Loop Whorl Tented arch
Radial Double loop
Loop Accidental
Whorl
| Pattern | Frequency | Description |
|---|
| Loop | 65% | One delta; ridges enter and exit same side |
| Whorl | 30% | Two deltas; circular/spiral ridges |
| Arch | 5% | No delta; ridges flow from one side to other |
Francis Galton (1892) - pioneered fingerprint classification. Henry classification system - used by police worldwide.
Q44. Gustafson's Method (Age from Teeth)
Six criteria scored 0-3 each; total score correlates with age:
| Feature | Description |
|---|
| Attrition (A) | Wear of occlusal surface |
| Periodontosis (P) | Recession of periodontium (gum) |
| Secondary dentine (S) | Deposition in pulp cavity |
| Cementum apposition (C) | Deposition at root apex |
| Root resorption (R) | Resorption of root tip |
| Root transparency (T) | Translucency of root (starts at apex) |
Score formula: Age = 11.43 Γ Total score + 11.02 (Β± 3.6 years)
Q92 / Q157. Male vs Female Differences (Pelvis & Skull)
PELVIS:
| Feature | Male | Female |
|---|
| Shape | Funnel-shaped, narrow | Broad, cylindrical |
| Pelvic inlet | Heart-shaped | Oval/round |
| Sub-pubic angle | <90Β° (acute, arch) | >90Β° (obtuse, arch) |
| Sacrum | Long, narrow, curved | Short, wide, flat |
| Acetabulum | Large, faces lateral | Small, faces lateral-forward |
| Greater sciatic notch | Narrow (<68Β°) | Wide (>68Β°) |
| Obturator foramen | Oval | Triangular |
| Purpose | Weight-bearing | Childbirth adapted |
SKULL:
| Feature | Male | Female |
|---|
| Size | Larger, heavier | Smaller, lighter |
| Forehead | Sloping | More vertical |
| Supraorbital ridges | Prominent | Less prominent |
| Mastoid process | Large, prominent | Small |
| Chin | Square, prominent | Rounded |
| Occipital protuberance | Well-marked | Less distinct |
| Orbits | Square | Round |
| Zygomatic arch | Prominent | Less prominent |
Q108. Cheiloscopy
Definition: The study of lip prints (rhagades) for identification purposes.
| Feature | Detail |
|---|
| Pattern by | Susuki & Tsuchihashi (1970) |
| Types | 5 types: Type I (vertical), Ia (partial vertical), II (branched), III (intersecting), IV (reticulate), V (undetermined) |
| Stability | Permanent, unique to each individual |
| Uses | Criminal investigation, identification of unknown persons |
| Samples from | Crime scene (glass, cup, cigarette) |
Q113. Human Hair vs Animal Hair
| Feature | Human Hair | Animal Hair |
|---|
| Medulla | Narrow (<1/3 diameter); interrupted | Wide (>1/2 diameter); continuous |
| Cuticular scales | Flat, closely imbricated | Projecting, coronal |
| Cross-section | Oval-round | Variable (flat, oval, triangular) |
| Pigment | Granules in cortex, even distribution | Pigment in medulla or dense cortex |
| Shaft | Uniform diameter | Variable; tapers to fine |
CHAPTER 9: MTP ACT & REPRODUCTIVE HEALTH
Total Questions: 7 (Q27, Q52, Q60, Q104, Q115, Q152 + surrogacy Q25)
Q27 / Q52. Natural Abortion vs Criminal Abortion
| Feature | Natural (Spontaneous) Abortion | Criminal Abortion |
|---|
| Definition | Involuntary expulsion of fetus <28 weeks | Deliberate termination outside legal framework |
| Cause | Chromosomal, hormonal, anatomical, infection | Drugs (abortifacients), instruments, violent means |
| Signs of violence | Absent | Often present (cervical tear, uterine perforation) |
| Doctor's duty | Treat, no legal duty | Report to police; MLC |
| Legal status | Not an offence | Punishable under IPC 312-316 unless under MTP Act |
Q25. Surrogacy and Medico-legal Significance
Definition: An arrangement where a woman (surrogate) carries a pregnancy for another person/couple (intended parents) who will be the child's parent after birth.
| Type | Description |
|---|
| Traditional surrogacy | Surrogate's own egg used; genetically related |
| Gestational surrogacy | Embryo from intended parents implanted (IVF) |
| Altruistic | No payment except expenses (legal in India since 2021) |
| Commercial | Payment for surrogacy (BANNED in India, Surrogacy Act 2021) |
Surrogacy (Regulation) Act, 2021 - Key Points:
- Only altruistic surrogacy allowed
- Surrogate must be close relative (married, 25-35 years, one child of her own)
- Commercial surrogacy prohibited
- National and State Surrogacy Boards established
Q115. Abortifacient Drugs
| Drug | Mechanism | Dose |
|---|
| Mifepristone (RU-486) | Antiprogesterone | 200mg oral |
| Misoprostol | PGE1 analogue; uterine contraction | 800mcg vaginal |
| Methotrexate | Antimetabolite; kills trophoblast | 50mg/mΒ² IM |
| Ergot alkaloids | Uterine contraction | Various |
| Quinine (high doses) | Direct uterotonic effect | Dangerous |
| Oxytocin (high doses) | Uterine contraction | Dangerous |
CHAPTER 10: MISCELLANEOUS FORENSIC TOPICS (LONG & SHORT)
Total Questions: ~50 remaining - covered below
Q3. Signs of Head Injury / Q23. Lucid Interval
HEAD INJURY - TYPES AND LUCID INTERVAL
EXTRADURAL HEMORRHAGE (EDH):
Trauma β Arterial bleed (middle meningeal artery)
|
Temporary unconsciousness β LUCID INTERVAL (minutes-hours)
|
Increasing headache β Hemiplegia β Dilated ipsilateral pupil
|
COMA β Death if untreated
|
CLASSIC example of LUCID INTERVAL
SUBDURAL (SDH): Venous; lucid interval longer or absent
INTRACEREBRAL: No lucid interval; immediate deep coma
SUBARACHNOID: "Thunderclap headache"; no true lucid interval
Signs of Head Injury:
- Battle's sign (mastoid bruising - base of skull #)
- Raccoon eyes (periorbital ecchymosis - anterior fossa #)
- CSF rhinorrhea/otorrhea
- Lucid interval (EDH)
- Coup and contrecoup lesions
- Cushing's triad (raised ICP): HTN + bradycardia + irregular respiration
Q6. Coma Cocktail Therapy
Definition: A combination of agents given empirically to any unconscious patient of unknown cause.
| Component | Dose | Rationale |
|---|
| Dextrose 50% | 50ml IV | Treat hypoglycemia |
| Thiamine (B1) | 100mg IV before glucose | Prevent Wernicke's (give BEFORE glucose) |
| Naloxone | 0.4-2mg IV | Reverse opioid toxicity |
| Flumazenil | 0.2-1mg IV | Reverse benzodiazepine (use with caution) |
| O2 | 100% | Treat hypoxia |
Q33. Brain Stem Death
Definition: Irreversible cessation of all functions of the brainstem, including the capacity for consciousness and the ability to breathe.
Criteria for Brain Stem Death (Transplantation of Human Organs Act, 1994):
| Test | Finding in BSD |
|---|
| Pupillary light reflex | Absent bilaterally (fixed, dilated) |
| Corneal reflex | Absent |
| Vestibulo-ocular (cold caloric) | Absent |
| Oculocephalic (Doll's eye) | Absent |
| Gag reflex | Absent |
| Cough reflex | Absent |
| Apnea test | No respiratory effort at PaCO2 >60 mmHg |
Two consultants must certify brain stem death, 6 hours apart. This allows organ donation.
Q41. Virtual Autopsy (Virtopsy)
Definition: A non-invasive technique using advanced imaging modalities (CT, MRI, angiography) to perform post-mortem examination without traditional surgical dissection.
| Advantages | Disadvantages |
|---|
| Non-invasive | Cannot detect chemical/toxicological causes |
| Preserves body for religious observances | Cannot assess fluid consistency |
| 3D reconstruction possible | Expensive equipment |
| No contamination | Cannot replace traditional autopsy fully |
| Useful in decomposed bodies | |
Q47 / Q101. Testamentary Capacity
Definition: The legal and mental capacity required to make a valid will (testament).
Requirements (Sound Testamentary Mind - "TACT"):
- Testator understands the nature of making a will
- Aware of the assets they possess
- Cognizant of the claims of relatives/persons
- The will must be made without undue influence
A person with mental illness may make a valid will during a lucid interval. (Ref: Parikh's Textbook)
Q62. Negative Autopsy
Definition: A post-mortem examination in which no cause of death can be ascertained despite thorough examination, including histology and toxicology.
| Causes | Detail |
|---|
| Sudden arrhythmic death | No structural lesion |
| Epilepsy-related death | Normal brain at autopsy |
| Anaphylaxis | May leave no specific findings |
| Drowning | If no diatoms and no water in lungs |
| SIDS | Diagnosis of exclusion |
| Early poisoning | Before morphological changes |
Q55. Cafe Coronary
Definition: Sudden asphyxial death from impacted food or foreign body in the larynx/pharynx, mistaken for a heart attack ("coronary") due to sudden collapse.
- Usually occurs while eating (cafe/restaurant setting)
- Victim clutches throat (universal choking sign)
- Heimlich maneuver is the treatment
- PM: Food bolus found in glottis/larynx
Q87. Hydrostatic Test (Docimasia Pulmonum)
Purpose: To determine if a newborn was born alive (breathed) or was stillborn.
HYDROSTATIC TEST
PROCEDURE:
Lungs removed β placed in water
|
FLOAT? β Infant was BORN ALIVE (breathed)
| Air-filled lungs are less dense than water
|
SINK? β Infant was STILLBORN or macerated
(unexpanded lungs sink)
Limitations:
- False positive: putrefaction gas may cause lungs to float even in stillborn
- False negative: atelectasis may cause lungs to sink even in live-born
- Secondary drowning test (Wreden's test) for more accuracy
Q76 / IPC Section 320 (Already covered above in Q102)**
Q80 / Q91 / Q125. Joule Burns (Electrical Burns)
Definition: Specific burns produced at the entry and exit points of electrical current passing through the body.
| Feature | Detail |
|---|
| Appearance | Oval/round, punched-out, pale center + red/brown margin |
| Shape | Entry: small, punched, charred; Exit: larger, explosive |
| Mechanism | Heat generated by resistance (Joule's law: H = IΒ²Rt) |
| Filigree burns | Branching pattern from lightning (as above) |
| Crocodile skin | Brown leathery texture from low voltage |
| Metallization | Deposition of conductor metal in skin |
| Medico-legal | Distinguish electrocution from other causes of death |
Q97. Burtonian Line (Burton's Line)
Definition: A dark bluish-black line along the gum margin (at junction of teeth and gum) seen in chronic lead poisoning (plumbism).
- Caused by deposition of lead sulfide
- Seen in lead workers
- Also seen in bismuth (bismuth line), mercury (black line)
- Distinguishes from physiological pigmentation (which is diffuse)
Q121. Plumbism (Chronic Lead Poisoning)
| System | Features |
|---|
| CNS | Encephalopathy (children), foot drop (wrist drop in adults) |
| GIT | Lead colic (severe abdominal pain), constipation |
| Blood | Microcytic anemia, basophilic stippling of RBCs |
| Bones | Dense metaphyseal bands ("lead lines") on X-ray |
| Skin | Pallor, blue-grey tinge |
| Gums | Burton's line |
| Urine | Aminoaciduria, glycosuria (renal tubular damage) |
Treatment: EDTA (adults), DMSA (children); chelation therapy.
Q94. Burns from Dry Heat vs Moist Heat vs Chemical
| Feature | Dry Heat Burns | Moist Heat (Scalds) | Chemical Burns |
|---|
| Source | Flame, hot objects | Steam, hot water | Acids, alkalis |
| Eschar | Hard, brown, tough | Soft, pale | Variable by agent |
| Blister | May be present | Large, turgid | Variable |
| Pain | Varies with depth | Present | Acid: initial pain; alkali: delayed |
| Depth | Variable | Usually superficial | Alkali: deeper |
| Smell | Burnt hair/tissue | None specific | Chemical smell |
| Healing | By depth | Faster (no keratin loss) | Slow (alkali worse) |
Q96. Contraindications of Gastric Lavage
| Contraindication | Reason |
|---|
| Corrosive poisoning (acid/alkali) | Risk of perforation, further damage |
| Petroleum/hydrocarbon products | Risk of aspiration pneumonitis |
| Convulsing patient | Aspiration risk |
| Unconscious (without airway protection) | Aspiration risk |
| >4 hours after ingestion (most poisons) | Little benefit; risk > benefit |
| ALP / Celphos | Gas already released; lavage risks |
| Strychnine (without sedation) | Stimulates convulsions |
Q109. Tandem Bullet
Definition: A bullet that sits inside the barrel of a firearm in front of the normal bullet. When fired, both bullets are projected. Also called a "piggyback bullet."
- Produces two entry wounds, or a larger single wound
- Rare; may be accidental or deliberate
- Important in forensic analysis of unusual gunshot wound patterns
Q119. Diagram of a Shotgun Cartridge
SHOTGUN CARTRIDGE - COMPONENTS
βββββββββββββββββββββββββββββββββββββββ
β OVER SHOT WAD / CRIMP CLOSURE β β Seals pellets
βββββββββββββββββββββββββββββββββββββββ€
β PELLETS (Shot) β β Lead/steel balls
βββββββββββββββββββββββββββββββββββββββ€
β OVER POWDER WAD β β Separates powder from shot
βββββββββββββββββββββββββββββββββββββββ€
β GUNPOWDER (Propellant) β β Smokeless/black powder
βββββββββββββββββββββββββββββββββββββββ€
β PRIMER (Percussion cap) β β Initiates ignition
βββββββββββββββββββββββββββββββββββββββ€
β BRASS BASE β β Metal head
βββββββββββββββββββββββββββββββββββββββ
Paper/Plastic cartridge body
Q120. Parrot's Perch (Position)
Definition: A stress position used in torture where the victim is suspended upside-down from a horizontal rod, with knees bent over the rod and wrists tied to the ankles. Named because the posture resembles a parrot perching.
- Used in coercive interrogation / torture
- Produces: positional asphyxia, brachial plexus injury, vascular compromise
- Medico-legal significance: evidence of torture; may contribute to death
Q122. Burking
Definition: A form of homicide by smothering and chest compression simultaneously - made famous by Burke and Hare (Edinburgh, 1828), who killed victims to sell bodies to anatomists.
| Feature | Detail |
|---|
| Method | Simultaneous pressure on nose/mouth + chest compression |
| PM findings | Petechiae; minimal external marks |
| Significance | May be confused with SIDS; requires careful investigation |
Q123. Narcoanalysis (Truth Serum)
Definition: Administration of a drug (sodium pentothal, scopolamine) to lower inhibitions and induce a hypnotic state to elicit confessions/information from suspects.
| Feature | Detail |
|---|
| Drugs used | Sodium thiopentone (truth serum), scopolamine |
| Mechanism | CNS depression β reduced inhibition β increased suggestibility |
| Legal status in India | NOT admissible as evidence per SC ruling (Selvi v. State of Karnataka, 2010) |
| Reason for rejection | Violates right against self-incrimination (Article 20(3)) |
Q124. Solvent Abuse (Inhalant Abuse)
Definition: Deliberate inhalation of volatile substances (glue, petrol, aerosols, paint thinner) to produce intoxication.
| Feature | Detail |
|---|
| Common agents | Toluene (glue), LPG, petrol, correction fluid, aerosols |
| Mechanism | CNS depression; displaces O2 |
| Acute effects | Euphoria, dizziness, hallucination, loss of coordination |
| Chronic | Brain damage, renal failure, peripheral neuropathy |
| Death | "Sudden sniffing death" - cardiac arrhythmia |
| Seen in | Street children; teenagers |
Q128. Body Packer Syndrome (Stuffers/Swallowers)
Definition: Ingestion of packets of illicit drugs (usually cocaine, heroin) wrapped in condoms or plastic bags, to smuggle drugs across borders.
| Feature | Detail |
|---|
| Common drugs | Cocaine, heroin |
| Packaging | Condom-wrapped pellets, finger cots |
| Detection | X-ray, CT scan, drugs test urine |
| Emergency | Packet rupture β massive drug overdose |
| Management | Observation; whole bowel irrigation; SURGICAL removal if signs of rupture |
| Cocaine packet rupture | Cocaine toxicity: tachycardia, hypertension, seizures, death |
Q132. Strychnine Poisoning vs Tetanus
| Feature | Strychnine Poisoning | Tetanus |
|---|
| Onset | Sudden (minutes-hours) | Gradual (days-weeks, incubation) |
| Cause | Poisoning (Nux vomica) | Clostridium tetani infection |
| Spasms | Opisthotonos; intermittent; muscles relax between spasms | Continuous rigidity; relax between LESS |
| Trismus | Absent | Present (lockjaw - early sign) |
| Consciousness | FULLY CONSCIOUS during spasms | Conscious |
| Reflex | Hyperreflexia | Hyperreflexia |
| Trigger | Touch, noise, light triggers spasm | Same |
| Risus sardonicus | Present | Present |
| Autonomic | Less marked | Prominent (sweating, tachycardia) |
| Treatment | Diazepam; sedation; muscle relaxants | Antitoxin, penicillin, diazepam |
Q133. Drug Addiction vs Drug Habituation
| Feature | Drug Addiction | Drug Habituation |
|---|
| Tolerance | Develops (need increasing doses) | Little or none |
| Physical dependence | Present (withdrawal symptoms) | Absent |
| Psychological dependence | Strong | Present |
| Harm | To individual AND society | Primarily individual |
| Withdrawal symptoms | Severe physical symptoms | Mild, psychological |
| Examples | Heroin, morphine, alcohol (severe) | Caffeine, nicotine, cannabis (mild) |
| WHO term | Drug dependence (preferred) | Less severe dependence |
Q138. Botulism
Source: Clostridium botulinum toxin (most potent known toxin)
| Type | Route | Features |
|---|
| Food-borne | Ingestion of preformed toxin (canned food) | GI symptoms first, then descending paralysis |
| Wound | Contaminated wound | No GI symptoms; descending paralysis |
| Infantile | Spore ingestion (honey) | "Floppy baby", constipation |
Clinical Features: Diplopia, dysarthria, dysphagia, descending flaccid paralysis, respiratory failure. NO fever. Pupils dilated, fixed. Consciousness preserved.
Treatment: Botulinum antitoxin (trivalent A, B, E); supportive ventilation; no antibiotics for food-borne type.
Q142. Counter-coup (Contrecoup) Lesions
Definition: Brain injury on the side opposite to the impact.
COUP-CONTRECOUP INJURY
Impact site β COUP injury (at impact)
|
Head moves β Brain lags behind
|
Brain hits opposite inner skull β
CONTRECOUP injury (opposite side)
Most common site: Frontal/temporal poles (even
when impact is occipital)
Q144. Rule of Nines (Wallace Rule)
For assessing burn surface area:
| Body Part | % BSA |
|---|
| Head + neck | 9% |
| Each upper limb | 9% each (18% total) |
| Chest (anterior trunk) | 9% |
| Abdomen (anterior) | 9% |
| Upper back | 9% |
| Lower back | 9% |
| Each thigh | 4.5% |
| Each lower leg | 4.5% |
| Each lower limb total | 18% each |
| Perineum/genitalia | 1% |
Rule of Nines:
Head = 9%
Each Arm = 9%
Chest = 9%
Abdomen = 9%
Upper Back = 9%
Lower Back = 9%
Each Leg = 18%
Perineum = 1%
TOTAL = 100%
Q146. Gastric Lavage
Definition: Washing out the stomach contents through a nasogastric/orogastric tube to remove unabsorbed poison.
| Step | Detail |
|---|
| Position | Left lateral decubitus (Trendelenburg) |
| Tube | 36-40 French Ewald tube |
| Fluid | Warm normal saline (250-300ml per cycle) |
| Cycles | Until fluid runs clear (~10-15 liters total) |
| Timing | Most effective within 1 hour of ingestion |
| Airway | Protect first (intubate if unconscious) |
| Sample | First aspirate sent for toxicology |
Q147. Ergot Poisoning
Source: Claviceps purpurea (fungus on rye/cereals)
| Type | Features |
|---|
| Convulsive | Epileptiform convulsions, mental disturbances |
| Gangrenous (St Anthony's Fire) | Vasoconstriction β gangrene of extremities |
Active alkaloids: Ergotamine, ergotoxine, ergometrine
Treatment: Vasodilators (nitroprusside, nifedipine); amputation if gangrenous.
Q148. Battered Baby (Child) Syndrome
Definition: A clinical condition resulting from deliberate non-accidental injury inflicted on a child by a parent or caregiver.
| Feature | Detail |
|---|
| Also called | Non-accidental injury (NAI); Shaken baby syndrome |
| Age | <3 years |
| Injuries | Multiple at different stages of healing |
| Fractures | Unusual sites (ribs, posterior rib fractures, metaphyseal chip) |
| CNS | Subdural hematoma (shaking); retinal hemorrhages |
| Skin | Multiple bruises at various stages |
| Burns | Cigarette burns; scalding patterns inconsistent with history |
| History | Inconsistent with injuries; delayed presentation |
Q149. Bestiality
Definition: Sexual intercourse between a human being and an animal. Also called zoophilia (when referring to attraction rather than act).
- Punishable under IPC Section 377 (before 2018 SC ruling, now partially amended but bestiality remains an offence)
- Medico-legal examination may reveal trauma to genitalia of animal and/or human
- Animal hair/secretions may be found as trace evidence
Q156. Types of Skull Fractures
SKULL FRACTURES - CLASSIFICATION
ββββββββββββββββββββββββββββββββ
β SKULL FRACTURES β
ββββββββββββββββββββββββββββββββ
|
ββββββββββΌββββββββββββββββββββββ
| | |
LINEAR DEPRESSED COMMINUTED
(most (punched in; (multiple
common) cortical bone fragments)
displaced inward)
|
βββ Fissured (hairline)
βββ Sutural diastasis
βββ Gutter fracture
βββ Pond fracture (pond-like depression; children)
βββ Ping-pong fracture (infants; greenstick type)
βββ Ring fracture (base of skull around foramen magnum)
Q160. Neurotoxic vs Vasculotoxic Snake Venom (Summary Table)
| Feature | Neurotoxic (Cobra, Krait) | Vasculotoxic/Haemotoxic (Viper, Pit viper) |
|---|
| Main toxin | Neurotoxins (alpha, beta) | Proteases, phospholipases, hyaluronidase |
| Local action | Minimal | Severe (swelling, necrosis, ecchymosis) |
| Systemic | Respiratory paralysis | DIC, hemolysis, renal failure |
| Ptosis | Yes (cobra) | No |
| 20WBCT | Normal | Abnormal (blood does not clot) |
| Antivenom | Works well | Works well; more needed for local effects |
Q162. Vitriolage
Definition: Throwing a corrosive substance (usually acid) onto another person, causing severe burns and disfigurement. Also called acid attack.
- Sulphuric acid most commonly used
- IPC 326A (added 2013): 10 years to life imprisonment + fine
- Compensation mandated by courts
- Medical management: immediate copious water irrigation; specific antidotes; reconstructive surgery
Q165. Causes of Impotency and Sterility in Males
| Category | Impotency | Sterility |
|---|
| Physiological | Aging, psychological | Aging |
| Psychological | Anxiety, depression | - |
| Organic/Vascular | Atherosclerosis, DM | - |
| Hormonal | Low testosterone, hyperprolactinemia | Hypogonadism, Klinefelter's |
| Neurological | Spinal cord injury, MS | - |
| Drugs | Antidepressants, antihypertensives, alcohol | Chemotherapy |
| Anatomical | Phimosis, hypospadias | Cryptorchidism, varicocele |
| Infective | - | Mumps orchitis, TB |
Q169. Signs of a Liveborn Child
| Sign | Detail |
|---|
| Air in lungs | Hydrostatic test positive (lungs float) |
| Air in GIT | Air in stomach/intestines on X-ray |
| Respiration marks | Pulmonary alveoli expanded |
| Cord cut/tied | Cut cord with drying |
| Cry | Vocal cord movements |
| Meconium passage | GIT function |
| Milk in stomach | Evidence of feeding |
| Skull shape change | Moulding (occurs only in labor) |
| Vital staining | PM vital reaction in lungs |
LONG QUESTIONS - CASE-BASED ANSWERS (Summary with Flow Diagrams)
Long Q1. Road Traffic Accident - Injuries & Medico-legal Duties
Types of RTA Injuries (Pedestrian):
PRIMARY IMPACT β SECONDARY IMPACT β TERTIARY IMPACT
(Bumper contact) (Bonnet/Windscreen) (Ground impact)
| | |
Bumper fractures Head/chest injury Random fractures
Tibia/fibula Scalp lacerations Abrasions
Soft tissue Rib fractures Contusions
Medico-legal Duties:
- Treat patient urgently (duty of care, IPC 304A)
- Prepare MLC (preserve samples)
- Inform police (cognizable offence)
- Certificate of injuries with description
- Preserve clothes/evidence
- Testify in court if summoned
Long Q3/Q15. Drowning - Comprehensive Answer
Definition: Drowning = death from suffocation due to submersion/immersion in liquid.
DROWNING - TYPES
|
ββββββΌβββββββββββββββββββββββββ
Wet Dry Secondary Near-
(90%) (10%) (delayed) drowning
| | | |
Water Laryngeal 6-72hr after Survived
enters spasm near-drowning submersion
lungs closes pulmonary
glottis edema
Ante-mortem vs Post-mortem Drowning:
| Feature | Ante-mortem Drowning | Post-mortem Submersion |
|---|
| Froth | Present (mouth/nostrils); white, tenacious; reappears when wiped | Absent or blood-stained |
| Cadaveric spasm | Present (weed/grass in fist) | Absent |
| Diatoms | Present in blood/bone marrow | Absent or superficial only |
| Lung weight | >700g (waterlogged) | Normal |
| Washerwoman's skin | Present (palms, soles macerated) | Present (postmortem change only) |
| Emphysema aquosum | Present | Absent |
| Middle ear hemorrhage | Present | Absent |
Diatom Test: Gold standard for ante-mortem drowning. Diatoms from water are found in bone marrow only if alive when submerged (circulation carries them there).
Gettler Test (Chloride Test): Left heart blood has lower chloride than right in salt water drowning; opposite in fresh water drowning (dilution phenomenon).
Long Q2. Organophosphorus Poisoning
Diagnosis: Based on history (pesticide access/smell), SLUDGE symptoms, miosis, bradycardia.
Confirmation:
- Plasma cholinesterase level (RBC cholinesterase more specific)
- Atropine challenge test (pupil dilates with atropine in OPC poisoning, confirming diagnosis)
- Urine for metabolites (alkyl phosphates)
- Blood GCMS for specific compound
Long Q16. Arsenic Poisoning - Exhumation Case
Soil samples: To detect arsenic poisoning (arsenic concentrates in surrounding soil).
Post-mortem imbibition: Diffusion of blood/fluids from putrefying body into surrounding soil/tissues.
Differential Diagnosis of Arsenic Poisoning:
- Cholera (rice-water diarrhea but no arsenic in urine)
- Gastroenteritis
- Other heavy metal poisons
Long Q4. Hydrogen Sulphide (H2S) Poisoning - Manhole Gas
Diagnosis: History of entering confined space (manhole, septic tank, sewer).
| Feature | Detail |
|---|
| Source | Anaerobic bacterial decomposition; manure pits; sewers |
| Smell | Rotten eggs (BUT olfactory nerve paralysis occurs rapidly - person may not smell it) |
| Mechanism | Inhibits cytochrome oxidase (like HCN); also mucous membrane irritant |
| Fatal dose | >700 ppm |
| PM | Greenish discoloration; H2S in tissues; pulmonary edema |
Treatment:
- Remove from exposure (rescuers use SCBA)
- 100% O2
- Amyl nitrite inhaled (same as HCN protocol - forms methemoglobin)
- Sodium nitrite IV
- Hyperbaric O2 (if available)
Long Q6. Krait Bite / Long Q8. Viper/Cobra Bite
Poisonous vs Non-poisonous Snake:
| Feature | Poisonous | Non-poisonous |
|---|
| Fang marks | 1-2 large puncture marks | Row of small teeth marks |
| Head shape | Usually triangular | Oval/rounded |
| Pit | Some have heat-sensing pit | Absent |
| Pupil | Vertical elliptical | Round |
| Body | Heavy, stocky | Slender |
Krait specific: Nocturnal; bites while sleeping; neurotoxic; bite may be painless; "morning syndrome" (patient found dead by morning).
Long Q9. Aluminium Phosphide Poisoning (Covered above Q20)**
Long Q12. Datura Poisoning (Covered above Q48/Q143)**
Long Q14. Opium Poisoning
Diagnosis: Pin-point pupils, coma, respiratory depression, reduced secretions, peculiar odor (opium/caramel).
Differential Diagnosis:
| Condition | Pupils | Respiration | Odour | Other |
|---|
| Opium poisoning | Pin-point | Slow, stertorous | Opium | Coma |
| Barbiturate | Mid-dilated | Slow | None | Coma |
| Alcohol | Mid-dilated | Slow | Alcohol | Coma |
| DM ketoacidosis | Normal | Kussmaul (deep) | Fruity ketones | Hyperglycemia |
| Pontine hemorrhage | Pin-point | Abnormal | None | Focal signs |
Management:
- Maintain airway
- Naloxone 0.4-2mg IV (specific opioid antagonist)
- Gastric lavage if recent oral ingestion
- Supportive care (ventilation)
Medico-legal: Opium is a schedule X drug (NDPS Act); doctor must report suspected opiate-related deaths; hair/urine/vitreous sent for analysis.
QUICK REFERENCE: CHAPTER-WISE COUNT
| Chapter | Topic | Number of Questions |
|---|
| 1 | Medical Jurisprudence & Legal | ~22 |
| 2 | Post-mortem Changes & Thanatology | ~20 |
| 3 | Asphyxial Deaths | ~6 |
| 4 | Mechanical Injuries | ~19 |
| 5 | Toxicology & Poisoning | ~22 |
| 6 | Sexual Offences & Reproductive | ~13 |
| 7 | Forensic Psychiatry | ~11 |
| 8 | Identification & Anthropology | ~8 |
| 9 | MTP & Reproductive Health | ~7 |
| 10 | Miscellaneous & Special Topics | ~40+ |
| TOTAL | | ~168 questions |
References used throughout:
- KS Narayan Reddy, The Essentials of Forensic Medicine and Toxicology, 36th ed. (2026) - [primary reference for Indian exams]
- Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology
- PC Dikshit's Textbook of Forensic Medicine and Toxicology
- DiMaio's Forensic Pathology, 3rd ed.
- Forensic Anthropology: A Comprehensive Introduction, 2nd ed.
Exam strategy: For SAQs (short answer), use the table format to organize features. For LAQs (long answer), open with a definition, use flow diagrams, then systematic tables. Always end with medico-legal significance. Repeat terms like "vital reaction," "Section 174 CrPC," "cognizable offence," and relevant IPC sections to score well.
