Legal procedure in fmt chapter 2 brief explanation in exam of view

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FMT Chapter 2 - Legal Procedure: Exam-Oriented Summary

(Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition, 2026 - FM1.3, FM1.4)

1. THE THREE MAJOR LAWS (New Codes 2023)

Old NameNew Name (2023 Act)What it Covers
Indian Penal Code (IPC), 1860Bharatiya Nyaya Sanhita (BNS) - Act 45 of 2023Substantive criminal law - defines offences and prescribes punishments
Criminal Procedure Code (Cr.P.C.), 1973Bharatiya Nagarika Suraksha Sanhita (BNSS) - Act 46 of 2023Procedural criminal law - police duties, trials, appeals, courts
Indian Evidence Act (IEA), 1872Bharatiya Sakshya Adhiniyam (BSA) - Act 47 of 2023Law of evidence - collection, preservation, use in all judicial proceedings
Exam Tip: All three new codes were enacted together in 2023. BNS = substantive law, BNSS = procedure, BSA = evidence.

2. TYPES OF CASES

TypeKey FeatureParties
Criminal LawOffences against public interest (person, property, state security)State vs. Accused (State represented by public prosecutors)
Civil LawDispute between two individuals/partiesPlaintiff vs. Defendant
Common LawMade by judges delivering decisions in individual cases-

3. INQUEST

An inquest = inquiry/investigation into the cause of death.

When is Inquest Done?

  • Suicide, murder
  • Killing by animal or machinery
  • Accidents
  • Deaths due to torture or ill-treatment
  • Occupational diseases
  • Suspected medical negligence
  • Suspicious/unnatural deaths
  • Deaths due to anesthesia or operation
  • Unidentified or skeletonized bodies

Two Types in India:

A) Police Inquest (Section 194, BNSS; old S. 174 Cr.P.C.)

  • Conducted by officer-in-charge of a police station (usually Sub-Inspector, not below Head Constable rank)
  • The officer is called the Investigating Officer (I.O.)
  • Done in presence of two or more respectable persons (Panchas)
  • Report = Panchanama (signed by I.O. and Panchas)
  • Body sent for postmortem (PM) to nearest authorized govt. doctor
  • Sent with: Dead Body Challan + copy of inquest
  • Note: Private institutions can do medicolegal examination of the living, but autopsies require State government permission
  • Report forwarded to Magistrate; if no foul play suspected, body handed to relatives

B) Magistrate's Inquest (Section 196, BNSS)

Conducted by: District Magistrate / Sub-Divisional Magistrate / Tahsildar / any Executive Magistrate empowered by State Government
Specific situations requiring Magistrate's Inquest:
  1. Dowry death
  2. Death of a woman within 7 years of marriage if:
    • She commits suicide
    • Dies under suspicious circumstances
    • Any relative requests it
    • Any doubt about cause of death
  3. Exhumation (digging up a buried body)
  4. Any person dies/disappears or rape is alleged while in police custody or court-authorized custody
Exam Tip (Key Difference): Police inquest is for general suspicious deaths. Magistrate's inquest is specifically for dowry deaths, women within 7 years of marriage, custody deaths/rape, and exhumation.

4. COURTS OF LAW

Criminal Courts (4 Types - Hierarchy):

CourtKey Points
Supreme CourtHighest tribunal; New Delhi; Article 134 of Constitution; law declared is binding on all courts; purely appellate in criminal cases
High CourtCapital of each State; Article 214; can try any offence; judges appointed by President of India; appellate only
Sessions CourtEstablished by State Government (Section 8, BNSS); at district headquarters; cases committed by Magistrate; death sentence must be confirmed by High Court; Assistant Sessions Court - max 10 years imprisonment + unlimited fine
Magistrate's CourtThree types: (i) Chief Judicial Magistrate (ii) First Class Judicial Magistrate (iii) Second Class Judicial Magistrate
Note (2023 Update): In metropolitan cities with >1 million population, Chief Judicial Magistrate and First Class have been removed under BNSS.
  • Sessions Judges and Magistrates are appointed by the High Court
  • The President of India can grant pardons, remissions, and commutation of death sentences

5. COGNIZABLE vs. NON-COGNIZABLE OFFENCES

FeatureCognizable OffenceNon-Cognizable Offence
ArrestPolice can arrest WITHOUT warrantPolice CANNOT arrest without warrant
InvestigationPolice can investigate without Magistrate's orderNeed Magistrate's order
ExamplesMurder, rape, robbery, dacoityCheating, forgery, assault (minor)

Quick Memory Points for Exam:

  • BNS = IPC replacement (substantive)
  • BNSS = Cr.P.C. replacement (procedure)
  • BSA = IEA replacement (evidence)
  • Police inquest = Section 194 BNSS (old 174 Cr.P.C.)
  • Magistrate inquest = Section 196 BNSS
  • Panchanama = signed by I.O. + 2 or more Panchas
  • Autopsy = only authorized government doctor
  • Exhumation = always Magistrate's inquest
  • Dowry death + 7-year marriage death = Magistrate's inquest
  • Death/rape in custody = Magistrate's inquest

Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition (2026) and Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology, 8th Edition - FM1.3 & FM1.4

Medical law and ethics chapter 3 of fmt with brief explanation for exam point of view

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FMT Chapter 3 - Medical Law and Ethics: Complete Exam Notes

(Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition, 2026 - KS Narayan Reddy)

1. PRINCIPLES OF MEDICAL ETHICS (FM10.17)

The "ABCJ" - 4 Core Pillars
PrincipleMeaningKey Point
Autonomy"Person's own right/will"Ability to make rational, uninfluenced decisions. Lost in dementia.
Beneficence"Do good / Fruitful result"Healthcare professional must take positive steps to benefit AND prevent harm to the patient.
Non-maleficence"Do no harm" (Primum non nocere)Most important principle - part of Hippocratic Oath. Don't use treatments that have not been adequately evaluated.
Justice"Be fair; equitable distribution"Treat all patients equally; fair distribution of risks/benefits in research (Aristotle's concept).
Exam Tip: BANJ = Beneficence, Autonomy, Non-maleficence, Justice. Non-maleficence = primary consideration ("primum").

2. HISTORICAL EMERGENCE OF MEDICAL ETHICS (FM10.1)

Era/PersonContribution
Code of Hammurabi (1750 BCE, Babylonia)Earliest documented standards for medical practitioners
Sushruta's Oath (1500 BCE)Sushruta = Father of Indian Surgery and Plastic Surgery; known for early rhinoplasty
Charaka's Oath (200 BCE)Charaka = Father of Indian Medicine (Charaka Samhita)
Hippocratic Oath (5th century BCE)Hippocrates = Father of Medicine and Medical Ethics; invokes Apollo and Asclepius
University of Wittenberg (1500 AD)First medical school to initiate oath-taking
Thomas Percival (1803, English physician)Wrote first "modern code of medical ethics"; coined terms "medical ethics" and "medical jurisprudence"
AMA (1847)Adopted first code of ethics based on Percival's work
Declaration of Geneva (1948)World Medical Association (WMA); modern version of Hippocratic Oath; amended in 1968, 1983, 2006, 2017
NMC India (2022)Introduced Charaka Oath for white coat ceremony
Exam Tip: Thomas Percival coined "medical ethics." Declaration of Geneva = modern Hippocratic Oath.

3. NATIONAL MEDICAL COMMISSION (NMC)

  • Replaced the old Medical Council of India (MCI) under the NMC Act 2020
  • Key functions:
    • Observes and promotes professional ethics
    • Conducts NEET (undergraduate/postgraduate admissions)
    • Conducts NEXT (National Exit Test) = common final year MBBS exam for license to practice
    • Grants limited license to Community Health Provider (CHP) for mid-level practice
    • Regulates fee for 50% seats in private medical institutions
4 Autonomous Boards under NMC:
  1. Under-Graduate Medical Education Board (UGMEB)
  2. Post-Graduate Medical Education Board (PGMEB)
  3. Medical Assessment and Rating Board (MARB)
  4. Ethics and Medical Registration Board (EMRB)
Exam Tip (MCI vs NMC): MCI = old body; NMC = new body from 2020. NEXT = new licensing exam replacing old final MBBS.

4. DUTIES OF MEDICAL PRACTITIONERS (FM10.6)

Duty = obligation to act or refrain from acting so that patient is not exposed to unreasonable risk.
Key duties:
DutyKey Point
Duty of Reasonable Skill and CareArises the moment a doctor examines a patient or gives advice - even over telephone. Doctor not liable because another doctor would have done better.
Duty to Continue TreatmentCannot abandon a patient in the middle of treatment.
Duty to ReferIf case is beyond competence, must refer to a specialist.
Duty to Inform of RisksMust inform mentally sound adult patient of all material risks before treatment/surgery and obtain consent.
Duty of ConfidentialityKeep all patient information secret (see Section 5 below).
Duty Toward Children/IncapacitatedExtra precautions required (hot water bottles example).

5. PROFESSIONAL SECRECY / CONFIDENTIALITY

  • An implied term of contract between doctor and patient
  • Doctor must keep secret everything known about the patient in professional capacity
  • Patient can sue for damages if disclosure is: (a) voluntary, (b) causes harm, (c) not in public interest
When disclosure IS permitted (exceptions):
  1. Notifiable diseases (must report to public health authorities)
  2. Court order (subpoena)
  3. Patient's own consent
  4. For the safety of third parties (e.g., risk of violence to others)
  5. In the public interest
Key Points:
  • If patient is major - never disclose to parents/relatives without patient's consent
  • If patient is minor or insane - inform guardians/parents
  • Even husband and wife - must not disclose to each other without that person's consent
  • Government servants examined on behalf of employer - doctor cannot disclose without patient's consent

6. PRIVILEGED COMMUNICATION

  • Communication between doctor and patient that is protected from disclosure in court
  • A doctor cannot be compelled to reveal in court what a patient told him in professional confidence
  • Exceptions: doctor may disclose if patient waives privilege, or if court so orders

7. PROFESSIONAL (MEDICAL) NEGLIGENCE / MALPRACTICE (FM10.18)

Definition: Absence of reasonable care and skill, or willful negligence of a medical practitioner in treatment of a patient, causing bodily injury or death.
  • Medical negligence = part of law of torts (civil wrong for which compensation can be sought)

4 Types of Medical Negligence:

TypeKey Points
Civil NegligenceSimple absence of care/skill; patient seeks monetary compensation; tried in civil court
Criminal NegligenceGross negligence/inattention/recklessness; patient seeks punishment; tried in criminal court; usually only when patient dies
Contributory NegligencePatient also contributed to the harm (e.g., not following doctor's advice)
Corporate NegligenceInstitution/hospital is liable (not just the individual doctor)

Civil vs Criminal Negligence (High-Yield Comparison):

FeatureCivil NegligenceCriminal Negligence
DegreeSimple absence of careGross negligence/recklessness
PurposePatient wants compensationPatient wants doctor punished
StandardCompared to general standardExtreme departure from standard
Law violatedNo specific criminal law need be provedMust have violated a specific criminal law

Key Doctrines:

  • Res Ipsa Loquitur = "The thing speaks for itself" - negligence is obvious from facts alone (e.g., leaving a surgical instrument inside patient)
  • Vicarious Liability = Employer responsible for employee's negligence (hospital liable for nurse's error)
  • Contributory Negligence = Patient's own fault reduces or negates doctor's liability

Defenses Against Negligence:

  1. No duty of care existed
  2. Duty of care was not breached
  3. No causal link between breach and injury
  4. Error of judgment (not negligence)
  5. Accepted practice followed (Bolam principle)
  6. Contributory negligence by patient

8. CONSENT IN MEDICAL PRACTICE (FM10.19)

(As per NMC Ethics & Medical Registration Board Gazette Notification, August 23, 2023)
Definition: Voluntary agreement, compliance or permission. To be legally valid, it must be:
  • Given freely (no coercion)
  • Given with understanding of what it is for + risks involved
Types of Consent:
TypeDescriptionExample
Implied ConsentNot stated explicitly; inferred from patient's actionsPatient holds out arm for injection; patient visiting doctor implies consent for physical examination
Informed Express - VerbalSpecifically stated verballyMinor procedures
Informed Express - WrittenSpecifically stated in writingSurgery, anesthesia, invasive procedures
Rules of Consent by Situation:
SituationRule
Adults (mentally sound)Patient must personally give consent
MinorsParent/guardian gives consent
Mentally illGuardian/court gives consent
Alcohol intoxicatedCannot give valid consent; wait if possible
EmergencyConsent not required - doctor can act to save life
Exam Tip: Treatment without consent = assault (battery). Even in absence of harm, patient can sue.

9. EUTHANASIA - MERCY KILLING (FM10.11)

Definition: Euthanasia (EU = good; Thanatos = death) = producing painless death in a person suffering from hopelessly incurable and painful disease.

Types:

TypeDescriptionExample
Active/PositiveAct of commission - actively doing something to hasten deathGiving large doses of drugs
Passive/NegativeAct of omission - withdrawing/not using life-sustaining measuresTurning off respirator; stopping food/water
VoluntaryAt the will of the personPatient requests death
InvoluntaryAgainst the will of the person (compulsory)-
Non-voluntaryPerson incapable of expressing wishesIrreversible coma, severely defective newborn

Legal Position in India:

  • Supreme Court held that "right to die with dignity" is a fundamental right under Article 21 of the Constitution
  • "Living Will" is permitted - a conscious adult may refuse medical treatment and embrace natural death
  • Active euthanasia = illegal in India
  • Passive euthanasia = permitted under strict guidelines
Guidelines for Living Will:
  1. Executor must be an adult with sound mind
  2. Voluntarily executed; based on informed consent
  3. Clear and unambiguous terms
  4. Signed before a First-Class Judicial Magistrate
  5. Must mention circumstances for withdrawal and name of guardian/close relative

10. MALINGERING

  • Definition: Conscious, deliberate, and willful feigning or exaggeration of disease or disability to gain some benefit (compensation, avoiding military duty, etc.)
  • Distinguished from hysteria (unconscious, no willful intent)
  • Doctor's duty: detect and report malingering

QUICK MEMORY SUMMARY FOR EXAM

TopicKey Fact
Ethics coined byThomas Percival (1803)
Father of MedicineHippocrates
Father of Indian MedicineCharaka
Father of Indian SurgerySushruta
Modern Hippocratic OathDeclaration of Geneva (1948, WMA)
NMC replacedMCI (Medical Council of India)
NEXT exam purposeLicensing to practice medicine
Negligence = law ofTorts
Res Ipsa Loquitur"The thing speaks for itself"
Treatment without consentAssault
Euthanasia etymologyEU = good; Thanatos = death
Active euthanasia in IndiaIllegal
Passive euthanasia in IndiaLegal (with Supreme Court guidelines)
Living Will signed beforeFirst-Class Judicial Magistrate
Article 21Right to life + right to die with dignity

Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition (2026) - Chapters FM10.1, FM10.6, FM10.17, FM10.18, FM10.19

Death and its causes chapter 6 of fmt with brief explanation in exam pov

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FMT Chapter 6 - Death and Its Causes: Complete Exam Notes

(Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition, 2026 - KS Narayan Reddy)

1. DEFINITIONS AND TERMINOLOGY

TermDefinition
Thanatology(Thanatos = death) - study of death in all its aspects, including changes that occur with and after death
Death (Legal - BNS)Section 2(6) BNS Act 45 of 2023 (old S.46 IPC): "death of a human being unless contrary appears from context"
Death (Registration Act)Registration of Births and Deaths Act, 1969 S.2(b): "Permanent disappearance of all evidence of life at any time after live birth"
Forensic TaphonomyInterdisciplinary study of postmortem biological changes of human remains in dispositional context
Exam Tip: "Death is not an event; it is a process."

2. TYPES OF DEATH (FM2.3)

A) SOMATIC DEATH (Clinical / Systemic Death)

  • Definition: Complete and irreversible stoppage of Circulation + Respiration + Brain function
  • Also called: Clinical death / Systemic death
  • Bishop's Triad of Life (Nicolas Bishop, 1638-1686): Circulation + Respiration + Brain function
  • Current concept: Somatic death = death of the brainstem
  • As long as oxygenated blood reaches the brainstem = life exists
  • A person who cannot survive withdrawal of artificial maintenance = dead
Bichat's Modes of Death (Xavier Bichat, 1771-1802):
ModeMechanism
ComaStoppage of brain function
AsphyxiaStoppage of respiration
SyncopeStoppage of circulation
Exam Tip: Bishop's triad = 3 components of life. Bichat's 3 modes = 3 ways life stops. Both describe the same triad from different angles.

B) MOLECULAR DEATH (Cellular Death)

  • Definition: Death of cells and tissues individually, after somatic death
  • Occurs 1-2 hours after stoppage of vital functions
  • Occurs piecemeal (not all at once)
  • Individual cells survive on residual oxygen - duration depends on metabolic activity
Order of tissue death (fastest to slowest):
TissueDies After Death
Cerebral cortex (vital centers of brain)~5 minutes
Basal ganglia~6-7 minutes
Vagal center~9-10 minutes
Skeletal muscle1-2 hours
Signs of Molecular Death (Muscle Excitability Tests):
TestDescriptionDuration After Death
Zasko's Phenomenon (Tendon Reaction)Strike lower 1/3 of quadriceps femoris (~10 cm above patella) → upward movement of patellaUp to 1-2 hours
Idiomuscular Contraction (Bulge)Strike biceps brachii with back of knife → local muscular bulgePhase 1: immediate; Phase 2: 4-5 hours; Phase 3: 8-12 hours (lasts up to 24 hours)
Electrical ExcitabilityElectrical excitability of facial musclesFew hours after death
Exam Tip: Molecular death = cellular death = death of individual tissues. Brain dies first, muscles last.

C) BRAIN DEATH

Types:
  1. Cortical Death - Only cortex is damaged; brainstem intact → "Persistent Vegetative State" (PVS). Patient breathes spontaneously, stable circulation, sleep-wake cycles present but no awareness.
  2. Brainstem Death - Complete irreversible loss of brainstem function → legally and medically = death
Harvard Criteria for Brain Death (1968):
  1. Unreceptivity and unresponsivity (deep coma)
  2. No spontaneous movements or breathing
  3. No reflexes
  4. Flat EEG (isoelectric) - confirmatory
Preconditions Before Testing:
  • Patient must be deeply comatose
  • Patient must be on a ventilator
  • Cause of coma must be known
  • Core temperature must be >35°C
  • Rule out: drugs/overdose, hypothermia (<35°C), metabolic/endocrine disturbance
Personnel for Brainstem Death Tests:
  • Must be performed by two medical practitioners
  • Both must be experts; transplant surgeons cannot perform tests
  • At least one must be of consultant status (junior doctors not permitted)
  • Each doctor must perform the tests twice
Brainstem Death Tests (cranial nerve function):
  1. Pupillary response to light
  2. Corneal reflex
  3. Vestibulo-ocular reflex
  4. Gag or cough reflex
  5. Grimacing to pain
Schools of Diagnosing Death:
  • French and English schools (similar to Harvard)
  • Austro-German school = Harvard criteria + bilateral serial angiography of internal carotid and vertebral artery; negative angiogram for >15 min = proves death

D) SUSPENDED ANIMATION

  • Definition: Vital functions are at such a low pitch that they cannot be detected by routine clinical examination - mimics death but is reversible
  • Death has NOT occurred; resuscitation is possible
Causes of Suspended Animation:
  • Hypothermia (most common - MCQ answer)
  • Drowning
  • Electrocution
  • Strangulation/Hanging
  • Cholera (severe dehydration)
  • Drug overdose
Exam Tip (MCQ): Suspended animation = temporary cessation of vital functions. Most common cause = Hypothermia. It can mimic death. Recovery is possible. NOT always reversible (false).

3. CAUSE OF DEATH (FM2.6)

Definition: The disease or injury responsible for starting the sequence of events leading to death.

3 Components of Cause of Death:

ComponentDefinitionExample
Immediate CauseInjury/disease present at time of terminal eventSepticemia, bronchopneumonia, peritonitis
Basic (Underlying) CausePathological process responsible for/leading to the terminal eventGunshot wound of abdomen → peritonitis
Contributory CausePathological process involved in/complicating but NOT causing the terminal eventPre-existing diabetes

Manner of Death:

  • Natural - death caused entirely by disease (no trauma/poison)
  • Unnatural/Violent - death by injury, or natural disease hastened by injury
    • Sub-types: Suicidal, Homicidal, Accidental, Undetermined

4. MEDICAL CERTIFICATE OF CAUSE OF DEATH (MCCD) - ICD-11 Format

(As per WHO ICD-11 guidelines)
Part I: Disease/condition directly leading to death (causal sequence - top to bottom):
  • Line (a) = Immediate cause (e.g., Septicemia)
  • Line (b) = Intermediate cause (e.g., Extensive burns)
  • Line (c) = Underlying cause (e.g., Assault by burning - dowry related) → this gets the ICD-11 code
Part II: Other significant conditions contributing to death but NOT part of the causal chain (e.g., hypertension, diabetes)
ICD-11 Example:
  • Dowry assault death: ICD-11 code = PK80.1 (Assault by burning)
Exam Tip: The underlying cause in Part I is what gets coded in ICD-11 - it is the root event that started everything.

5. MODES OF DEATH - BICHAT'S TRIAD IN DETAIL

A) SYNCOPE (Stoppage of Circulation)

  • Sudden failure of cardiac action with stoppage of circulation
  • Heart stops first → respiration stops within 20 minutes

B) COMA (Stoppage of Brain Function)

  • Unarousable unconsciousness; no psychologically understandable response to external stimuli or inner need
  • Involves central portion of brainstem
  • Coma is a clinical symptom, NOT a cause of death
Causes of Coma:
  1. Brain compression (blood/pus/tumor)
  2. Drugs: opium, hypnotics, cocaine, alcohol, cyanide, CO
  3. Metabolic disorders: uremia, hepatic failure, hypoglycemia, electrolyte imbalance
  4. Infections: meningitis, encephalitis

C) ASPHYXIA (Stoppage of Respiration)

  • Interference with respiration or lack of O₂ causing organs/tissues to be deprived of oxygen (+ failure to eliminate CO₂)
  • "Asphyxia indicates a mode of dying, not a cause of death"
Brain uses 20% of total body oxygen despite being only 1.4% of body weight.
Thumb Rule:
  • Breathing stops within 20 seconds of cardiac arrest
  • Heart stops within 20 minutes of breathing stoppage
Cortical damage timing in total ischemia:
  • Cerebral cortex function stops: 8-15 seconds
  • Brainstem ganglia: 25-30 seconds
  • Irreparable cortex damage: ~3 minutes
Types of Anoxia (4 types):
TypeMechanism
Anoxic anoxiaLack of O₂ in inspired air / mechanical obstruction - known as asphyxia
Anemic anoxiaReduced O₂-carrying capacity (e.g., CO poisoning, hemorrhage)
Stagnant anoxiaSluggish/stopped circulation (e.g., cardiac failure)
Histotoxic anoxiaTissues unable to utilize O₂ (e.g., cyanide poisoning)
Signs/Features of Asphyxia:
  • Tardieu spots = petechial hemorrhages on visceral surface of pleura (classic)
  • Petechial hemorrhages on brain (white matter)
  • Cyanosis
  • Congestion of internal organs
  • Frothy mucus in airways
  • Pulmonary edema

6. SUDDEN DEATH (FM2.5)

Definition (WHO): Person not known to be suffering from any dangerous disease, injury, or poisoning found dead or dies within 24 hours after onset of terminal illness.
  • Some authors define it as death within 1 hour of symptom onset
  • Incidence: approximately 10% of all deaths
  • Emphasis on unexpected character rather than suddenness

System-wise Causes of Sudden Death (Table 6.1):

System%Key Causes
Cardiovascular45-50% (Most common)Coronary atherosclerosis ± thrombosis, MI, aortic rupture, pulmonary embolism, cardiomyopathy, arrhythmia, conduction system lesions
Respiratory~15%Acute laryngeal edema (anaphylaxis), status asthmaticus, pulmonary embolism, spontaneous pneumothorax
CNS~15%Subarachnoid hemorrhage, cerebral hemorrhage, epilepsy, meningitis
GIT/Abdominal~5-10%Ruptured ectopic pregnancy, GI hemorrhage, ruptured aortic aneurysm
OthersVariableAnaphylaxis, electrolyte imbalance, hypoglycemia
Exam Tip (MCQ): Most common cause of sudden death = Cardiovascular (45-50%). Most common specific cause = Coronary atherosclerosis.

7. OBSCURE AUTOPSY

  • Autopsy where no definite anatomical cause of death is found
  • "The doctor should admit inability to give a positive opinion"
  • Common obscure deaths: hypoglycemia, hyperkalemia, cardiac arrhythmias, epilepsy, vagal inhibition, snake bites
  • When no cause found + natural circumstances: certify as "undetermined natural circumstances"
  • When circumstances equivocal: certify cause and manner as "undetermined"
  • Old age with generalized senile atrophy: certify as "myocardial degeneration due to senility"

QUICK MEMORY CHART FOR EXAM

TopicKey Fact
ThanatologyStudy of death in all aspects
Somatic death =Irreversible stoppage of Circulation + Respiration + Brain (Bishop's triad)
Current concept of somatic deathDeath of brainstem
Bichat's modesComa, Asphyxia, Syncope
Molecular death timing1-2 hours after somatic death
Brain vital centers die~5 minutes after somatic death
Muscles die1-2 hours after somatic death
Zasko's phenomenonStrike quadriceps → patella moves; up to 1-2 hours
Harvard criteria1968; assesses brainstem; flat EEG confirmatory
Brain death tests by2 doctors (NOT transplant surgeons); consultant status
Suspended animation causeHypothermia (most common)
Asphyxia =Mode of dying, NOT a cause of death
Tardieu spotsPetechiae on visceral surface of pleura
Sudden death (WHO)<24 hours after onset; 10% of all deaths
Most common cause sudden deathCardiovascular (45-50%)
ComaSymptom, NOT cause of death
Breathing stops after cardiac arrest20 seconds
Heart stops after breathing stops20 minutes

Source: The Essentials of Forensic Medicine and Toxicology, 36th Edition (2026) - Chapter 6, FM2.1, FM2.3, FM2.5, FM2.6, FM2.7
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