Breastfeeding - Complete Quiz Notes

From Park's Textbook of Preventive & Social Medicine + Nelson/OP Ghai Key Points

Note: Park's Textbook of Preventive and Social Medicine is available in the library and forms the basis of the textbook content below. OP Ghai's "Essential Pediatrics" and Nelson's Textbook of Pediatrics are not in the current library, but their key breastfeeding facts are included from established medical knowledge.

WORLD BREASTFEEDING WEEK

BABY-FRIENDLY HOSPITAL INITIATIVE (BFHI) - PARKS

• Created and promoted by WHO and UNICEF
• In operation since 1993 (Parks: "Since 1993, WHO's efforts to improve infant and young child nutrition have focused on promoting breast feeding")
• Implementation guidelines revised in 2018 (10 Steps updated)
• Breast feeding could prevent deaths of at least one million children a year

TEN STEPS TO SUCCESSFUL BREASTFEEDING (Revised 2018 - Parks)

1. (1a) Comply fully with the International Code of Marketing of Breast-milk Substitutes and relevant World Health Assembly resolutions
2. (1b) Have a written infant feeding policy routinely communicated to staff and parents
3. (1c) Establish ongoing monitoring and data-management system

Baby-friendly hospitals in India also implement: antenatal care, clean delivery practices, essential newborn care, immunization, and ORT.

BREASTFEEDING - KEY FACTS (PARKS)

Composition of Human Milk

• Energy value: 70 kcal per 100 ml (Parks)
• Protein: 1.1 g per 100 ml
• Daily output (Indian mothers): 450-600 ml/day (up to 400-600 ml in first year)
• Milk output peaks at 5-6 months of lactation (~730 ml/day per Parks Table)

Output of Breast Milk at Different Stages (Parks Table 2)

When to Start Breastfeeding

• Initiated within 1 hour of birth (Parks: "Breast-feeding should be initiated within an hour of birth")
• Colostrum = first milk; rich in protein, anti-infective factors; most suitable for early period
• Regular milk comes on 3rd to 6th day after birth

Duration

• Exclusive breastfeeding for first 6 months (no other food required)
• Continue breastfeeding up to 2 years or beyond with complementary foods from 6 months

Advantages of Breast-Feeding (Parks - 11 key points)

1. Safe, clean, hygienic, cheap, available at correct temperature
2. Fully meets nutritional requirements in first few months
3. Contains antimicrobial factors: macrophages, lymphocytes, secretory IgA, anti-streptococcal factor, lysozyme, lactoferrin - protects against diarrhoeal diseases, NEC, respiratory infections
4. Easily digested by normal and premature babies
5. Promotes "bonding" between mother and infant
6. Sucking helps development of jaws and teeth
7. Protects babies from obesity
8. Prevents malnutrition and reduces infant mortality
9. Prevents neonatal hypocalcaemia and hypomagnesaemia (biochemical advantages)
10. Helps space children by prolonging period of infertility (lactational amenorrhoea)
11. Special fatty acids lead to higher IQ (~8 points higher) and better visual acuity

Benefits for Mothers (Parks)

• Lowers risk of postpartum haemorrhage and anaemia
• Boosts mother's immune system
• Delays next pregnancy
• Reduces insulin requirements in diabetic mothers
• Protects from ovarian cancer, breast cancer, and osteoporosis

Infant Mortality Impact (Parks)

• In developing countries, infant mortality rates are 5-10 times higher among children not breastfed or breastfed less than 6 months

COLOSTRUM - KEY POINTS

LACTATIONAL AMENORRHOEA METHOD (LAM) - Parks

• Lactation prolongs postpartum amenorrhoea
• No more than 5-10% of women conceive during lactational amenorrhoea
• Risk exists only during month preceding resumption of menstruation
• Once menstruation returns, lactation offers no protection against pregnancy
• By 6 months postpartum, 20-50% of women are menstruating and need contraception

WEANING - Parks

• Weaning = gradual process starting at 6 months (NOT sudden withdrawal)
• Breast milk alone insufficient to sustain growth beyond 6 months
• Supplementary foods: cow's milk, fruit juice, soft-cooked rice, suji, dal, vegetables
• Weaning period = most crucial period in child development
• Risk: exposure to malnutrition-infection synergism
• Complications of improper weaning: diarrhoea, growth failure, kwashiorkor, marasmus, immunodeficiency
• At 1 year: solid foods - cereals, pulses, vegetables, fruits

IMS ACT (India) - Parks

• Full name: Infant Milk Substitutes, Feeding Bottles and Infant Food (Regulation of Production, Supply and Distribution) Act 1992
• Came into force: 1st August 1993
• Prohibits promotion of infant food, infant milk substitutes and feeding bottles
• Amendment Act 2003: came into action 1st January 2004
• Key goal: Exclusive breastfeeding rate for first 6 months to 80% (from 55.2%)

FROM NELSON'S TEXTBOOK OF PEDIATRICS (Key Quiz Points)

Composition of Human Milk vs Cow's Milk

Contraindications to Breastfeeding (Nelson/OP Ghai)

• Mother on cytotoxic drugs (methotrexate, cyclophosphamide)
• Mother with galactosaemia in infant
• Classic galactosaemia in infant (no breast milk)
• Mother with active untreated tuberculosis (until treated for at least 2 weeks)
• Mother HIV positive (in developed countries - ONLY; in developing countries WHO recommends breastfeeding with ARVs)
• Mother on radioactive isotopes (temporary cessation)
• Mother on drugs of abuse (heroin, cocaine)

• Hepatitis B (give HBIG + vaccine to infant)
• Hepatitis C
• CMV
• Mastitis
• Mild maternal illness (fever, cold)
• Jaundice (except in specific situations)

Breast Milk Jaundice

• Onset: 5-7 days of life
• Peaks: 2nd-3rd week
• Resolves by: 3-12 weeks
• Mechanism: Enzyme pregnane-3-alpha, 20-beta-diol (or lipase - 5-beta pregnanediol) inhibits glucuronyl transferase
• Bilirubin may reach 20-30 mg/dl
• Management: Temporary cessation of breastfeeding for 24-48 hours (levels fall rapidly); then resume

Breastfeeding Jaundice (Early onset)

• Occurs in first 3-5 days
• Cause: Inadequate intake of breast milk -> increased enterohepatic circulation
• Management: Improve breastfeeding technique; increase feeding frequency

OP GHAI - ESSENTIAL PEDIATRICS: KEY Points

Normal Breast Milk Output

• Newborn requires: 150-180 ml/kg/day
• Caloric requirement: 100-120 kcal/kg/day
• Frequency of feeding: 8-12 times per 24 hours (every 2-3 hours)

Signs of Adequate Breastfeeding

1. Baby feeds 8-12 times in 24 hours
2. 6 or more wet diapers per day after day 4-5
3. Baby regains birth weight by 10-14 days
4. Stool frequency: 3-4 times/day (yellow, seedy in breastfed)
5. Baby appears satisfied after feeds

Prelacteal Feeds

• Should be avoided (water, honey, jaggery water, animal milk)
• Honey is dangerous - risk of infant botulism

Positioning and Attachment (OP Ghai)

• Mouth wide open
• More areola visible above than below
• Lower lip turned outward
• Chin touching breast

• Cheeks sucked in
• Clicking sound
• Nipple pain

QUICK-RECALL MCQ FACTS (High-Yield)

Clinical Scenarios: Breastfeeding - With Answers

SCENARIO 1 - Jaundice in a Breastfed Newborn

SCENARIO 2 - Mother with Mastitis

• Most common organism: Staphylococcus aureus (also E. coli, rarely Streptococcus)
• Wedge-shaped area corresponds to a lobe of the breast

1. CONTINUE breastfeeding on BOTH breasts - optimizing effective milk removal (do NOT stop)
2. Analgesia - to facilitate let-down and effective milk removal
3. Supportive measures: rest, adequate fluids and nutrition, heat before feeding (for let-down), cold after (for pain)
4. Antibiotics if not improving with conservative measures (10-14 days, safe for infant)
5. Answer to the question "Stop breastfeeding?" = No - continue breastfeeding

• Check latch-on and positioning (poor latch -> milk stasis)
• Encourage different breastfeeding positions to drain different ducts
• Ensure adequate rest, hydration, and no delay between feeds/pumping
• Check nipples for cracks, fissures, or fungal (Candida) infection

SCENARIO 3 - Suspected Inadequate Milk Supply

• Birth weight regained (✓ - 3.4 kg by 3 weeks)
• Minimum acceptable weight gain: 30 g/day through 3 months
• ≥ 6 wet diapers/day after day 4-5 (✓)
• 2-3 stools/day (✓ - yellow, seedy stools are normal in breastfed infants)
• 8-12 feeds/24 hours (✓)

1. Errors in feeding technique (latch, positioning)
2. Remediable maternal factors (poor diet, inadequate rest, emotional distress)
3. Physical disturbance in the infant interfering with feeding/weight gain

SCENARIO 4 - Contraindications to Breastfeeding

SCENARIO 5 - Newborn with Galactosaemia

• Urine has reducing substances that are not glucose = galactose
• Presentation: jaundice, hepatomegaly, sepsis (E. coli), cataracts, intellectual disability
• Breastfeeding is ABSOLUTELY CONTRAINDICATED - breast milk contains lactose which is hydrolyzed to galactose
• Replace with lactose-free / galactose-free formula (soy-based formula)

SCENARIO 6 - Drugs and Breastfeeding

SCENARIO 7 - Breastfeeding Support and BFHI

1. Breastfeeding rates improve with institutional support - BFHI-compliant hospitals show significantly higher breastfeeding initiation and duration
2. "Putting baby to breast within 30-60 minutes of delivery, avoiding bottles and pacifiers, and rooming-in are all critical" for success (Swanson's)
3. Most women decide to breastfeed before or during early pregnancy - not during the 3rd trimester. So early education matters
4. Partner/significant other opinion is important in the woman's breastfeeding decision
5. Women who breastfeed tend to be older and more educated - but this is a reason to actively target younger, less-educated mothers with enhanced support, not to withdraw services
6. Pacifier use is discouraged per BFHI - BFHI Step 9: counsel on risks of bottles, teats and pacifiers
7. The cost savings from reduced formula use, reduced infant illness (diarrhea, respiratory infections, otitis media), and reduced maternal illness (breast/ovarian cancer, osteoporosis) far exceed the cost of a lactation consultant

SCENARIO 8 - Breastfed Baby with Constipation after Switching to Formula

• In formula-fed infants, constipation is common - a daily bowel movement is NOT required
• In breastfed infants, constipation is extremely rare - this is a key difference
• Management: Reassure parents; a stool every 1-3 days with no symptoms requires no treatment
• Glycerin suppositories may be used if needed
• Do NOT use: mineral oil, adult laxatives, or adding bran to the bottle
• For older infants: small amounts of prune juice may help
• Water supplementation is generally NOT recommended for young infants
• Rare conditions to consider in severe cases: Hirschsprung disease (meconium ileus, cystic fibrosis)

SCENARIO 9 - Breastfeeding and Lactational Amenorrhoea Method (LAM)

• If all 3 present: failure rate is only 1-2% (comparable to OCP)
• No more than 5-10% of women conceive during lactational amenorrhoea (Parks)
• Risk exists only during the month preceding resumption of menstruation
• Once menstruation returns: LAM no longer effective - additional contraception required
• By 6 months postpartum: 20-50% of women have resumed menstruation and need contraception
• Advise her: LAM is currently effective for her, but she must start another contraceptive method as soon as any of the 3 conditions fail (menses return, supplementary feeds introduced, or infant >6 months)

SCENARIO 10 - Breastfed Infant with Poor Weight Gain

• Birth weight should be regained by 10-14 days
• Minimum weight gain: 30 g/day (1 oz/day) through 3 months
• This baby has actually lost weight at 6 weeks - this is NOT acceptable

1. Feeding technique - latch-on and positioning (poor latch = poor milk transfer)
2. Feeding frequency - should be 8-12 times/24 hours, NOT every 3-4 hours
3. Maternal factors - diet, rest, emotional distress, medications
4. Infant factors - tongue-tie (ankyloglossia), cleft palate, neurological issues affecting suck

• Mouth wide open
• More areola visible above than below
• Lower lip turned outward
• Chin touching breast
• No clicking sound, no cheek dimpling

• Increase feeding frequency to 8-12 times/day - do not let infant sleep through feeds
• Ensure adequate maternal nutrition and hydration
• If milk supply is insufficient: pump every 2-3 hours with hospital-grade double electric pump
• Temporary formula supplementation may be required (do not abandon breastfeeding dogmatically)
• Reassess in 3-5 days with weight check

SCENARIO 11 - Storage of Expressed Breast Milk

• Once thawed to room temperature or warmed: use within 2 hours
• Do NOT refreeze thawed breast milk
• Store in clean containers, labeled with date/time

HIGH-YIELD SCENARIO-BASED MCQ FACTS

Broadening and Thickening in Osteomyelitis

What Is "Broadening and Thickening"?

Pathophysiology - How Broadening and Thickening Develop

Step-by-Step Sequence:

Bacteraemia → Seeding in metaphyseal sinusoidal loops
(slow blood flow + microtrauma = ideal environment)
        ↓
Inflammation + suppuration in medullary cavity
        ↓
Rising intramedullary pressure
        ↓
Pus tracks through Volkmann canals → cortex
        ↓
Pus elevates periosteum (subperiosteal abscess)
        ↓
Cortical bone devascularized → SEQUESTRUM (dead bone)
        ↓
Periosteal elevation → potent stimulus for new bone formation
        ↓
New bone (INVOLUCRUM) forms around the dead sequestrum
→ Bone appears BROADER and cortex appears THICKER on X-ray

• Bailey and Love's Short Practice of Surgery, 28th Ed.

The Key Structural Terms

Timing of Radiological Signs (Critical for Exams)

Key exam point (S. Das): "There is practically no place of X-ray examination in acute cases and diagnosis must be made clinically." X-ray is useful only in chronic osteomyelitis where sequestrum and involucrum are visible.

Imaging Findings at Each Stage (Grainger & Allison Diagnostic Radiology)

Why is the Involucrum Broad and Thick? (The Mechanism of "Broadening")

• The involucrum forms outside the original cortex, encasing it
• This creates a double-layered cortex - original (dead) cortex inside + new reactive bone outside
• On X-ray this appears as a bone wider than normal with a thick cortical rim
• The density difference between the dense inner sequestrum and the surrounding involucrum creates the classic "bone within a bone" appearance
• On the Chronic Tibia X-ray (Grainger & Allison Fig. 46.7): "There is cortical thickening and chronic periosteal new bone formation, forming an involucrum (long black arrows) around an indistinct medullary cavity. There is a cloaca (short black arrow)."

X-ray Images of Chronic Osteomyelitis - Broadening and Thickening

Classic chronic osteomyelitis of fibula showing cortical thickening and periosteal reaction:

Classic chronic osteomyelitis of femur showing broadened bone, involucrum, and central sequestrum:

Chronic osteomyelitis of humerus showing "bone-within-a-bone" appearance with exuberant involucrum:

Why the Sequestrum Appears Dense on X-ray (S. Das)

• Density of sequestrum = decreased mobilization of calcium because of decreased blood supply to dead bone
• The calcium remains trapped in the sequestrum and cannot be resorbed
• The involucrum also appears dense because calcium deposition has just commenced (new bone formation)
• Together, they create the double-dense pattern: dense outer involucrum + denser inner sequestrum + lucent gap between them (pus/granulation tissue)

Brodie's Abscess (Subacute Osteomyelitis) - Contrast

Differential Diagnosis of Broadening and Thickening of Bone

Age-Related Differences in Osteomyelitis (Campbell's Operative Orthopaedics)

Key Exam Points - Quick Recall

Broadening vs Thickening in Osteomyelitis

The Core Distinction

Visual Concept (Cross-Section of Bone)

NORMAL BONE (cross-section):
        ←— Normal diameter —→
    ___________________________
   |   Medullary cavity        |
   |   [marrow]                |
   |___________________________|
        ←— cortex →←— cortex →
         (thin, uniform)

OSTEOMYELITIS - BROADENING + THICKENING:
        ←——— BROADENED diameter ————→
   _____________________________________
  |NEW BONE     |  ORIGINAL  |NEW BONE  |  ← Involucrum outside
  |(Involucrum) |  CORTEX    |(Involucrum)|   = BROADENING
  |             |____________|          |
  |             | SEQUESTRUM |          |  ← Dead original cortex
  |             |  (dense)   |          |
  |_____________|____________|__________|
  ←— thicker wall —→ ← thicker wall—→   = THICKENING
        ← narrowed medullary cavity →

In Simple Terms

• Broadening = the bone is wider when you look at it on X-ray (increased outer diameter) - because new bone has been deposited outside the original cortex by the elevated periosteum
• Thickening = the cortical wall is thicker/heavier - the shell of the bone has increased in thickness, either from periosteal new bone adding to the outside, or endosteal new bone adding to the inside (or both)

They usually occur together in chronic osteomyelitis and both result from the involucrum, but:

• Broadening is a diameter change (how wide the bone is)
• Thickening is a wall change (how thick the cortex is)

The Two Sources of Thickening

1. Periosteal Thickening (outward)

• Periosteum is elevated by subperiosteal pus
• Lay down new bone on the outer surface of the cortex
• Cortex becomes thicker from outside in
• Also contributes to broadening

2. Endosteal Thickening (inward)

• Endosteal reaction lays bone inside the medullary cavity
• Cortex becomes thicker from inside out
• Medullary canal becomes narrower (not broadened - the outer diameter may stay same)
• More prominent in adults and chronic disease (Goldman-Cecil: "Endosteal thickening predominates during infancy and childhood, and periosteal new bone formation is prominent during adulthood")

How They Relate to Each Stage

"Periosteal new bone appears at 5 to 7 days" (in children) "Osteolysis - 30-50% loss of bone mineral - may not appear until 10 to 14 days"

Key Exam One-Liners

CT View - Both Signs Together

Summary Table