Paediatrics

Paediatrics is one of the most rewarding and high-yield clinical subjects in NEET PG and INI-CET. Unlike the volume-heavy subjects such as Medicine or Surgery, Paediatrics rewards the disciplined aspirant: the syllabus is finite, the facts are crisp, and the questions are overwhelmingly fact-based and recall-driven. A candidate who has internalised the immunisation schedule, the developmental milestones, the neonatal reflexes, the malnutrition cut-offs, and the classic genetic and congenital heart disease associations can confidently expect to score nearly full marks in this section. This mother page maps the entire subject as it is examined, system by system, with the must-know facts, the recurring traps, and a revision strategy calibrated to the way the exam actually behaves.

How Paediatrics Is Tested

Weightage and exam behaviour

In NEET PG, Paediatrics contributes approximately 8–10% of the paper — typically 14–18 questions out of 200. In INI-CET (AIIMS/PGI/JIPMER pattern), the proportion is similar but the questions are sharper, more clinical-vignette driven, and more likely to test image-based or multi-step reasoning (e.g., a growth chart, an ECG in a cyanotic infant, or a peripheral smear). FMGE also leans heavily on the same high-yield cores.

The defining characteristic of Paediatrics is its predictability. Roughly 60–70% of questions cluster around a handful of evergreen themes:

• Immunisation (National Immunization Schedule, vaccine types, contraindications, cold chain).
• Growth and development (milestones, growth charts, anthropometric cut-offs).
• Neonatology (resuscitation/NRP, neonatal jaundice, RDS, sepsis, APGAR).
• Nutrition (IYCF, PEM/SAM classification, vitamin deficiencies, breastfeeding).
• Genetics and dysmorphology (trisomies, single-gene disorders, inheritance patterns).

Recurring question styles

Style	Example stem	What it tests
Direct recall	"Which vaccine is given at birth?"	Schedule memory
Single-best clinical vignette	A 3-day-old with bilious vomiting and double-bubble sign	Pattern → diagnosis
Image-based	Photo of facies, X-ray, peripheral smear, ECG	Visual recognition
Numerical cut-off	"SAM is defined as weight-for-height Z-score below…"	Exact criteria
Matching/association	Cherry-red spot ↔ which disease	Classic associations
"Most common cause of…"	Most common cyanotic CHD presenting in neonate	Epidemiology ranking
Recent guideline	Updated NIS, new IAP recommendation	Currency of knowledge

A practical tip: in Paediatrics, when a question gives a precise age and a precise sign, it almost always wants the single classic diagnosis. Avoid overthinking — the subject rarely plays "double trap" games the way Pharmacology or Forensic Medicine do.

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Neonatology

Neonatology is the single most heavily tested group within Paediatrics — expect 3–5 questions here in a typical NEET PG paper. It blends physiology, resuscitation protocols, and disease recognition.

Neonatal resuscitation (NRP)

The Neonatal Resuscitation Program algorithm is a perennial favourite. Key anchor points:

• The 3 initial assessment questions: Term gestation? Good tone? Breathing/crying?
• Golden minute: initial steps + ventilation, if needed, within the first 60 seconds.
• PPV indication: apnoea/gasping OR heart rate <100/min.
• Chest compressions start when HR <60/min despite 30 seconds of effective PPV; ratio 3:1 (90 compressions + 30 breaths = 120 events/min).
• Adrenaline when HR remains <60/min despite adequate ventilation and compressions; preferred route is IV/UVC (0.01–0.03 mg/kg), endotracheal route is less reliable.
• Room air (21% O₂) is used to start resuscitation in term babies; preterm may start at 21–30%.
• Cord clamping: delayed cord clamping (30–60 s) is now recommended for vigorous term and preterm neonates.

APGAR score

Five parameters — Appearance (colour), Pulse (HR), Grimace (reflex irritability), Activity (tone), Respiration. Each scored 0–2. Taken at 1 and 5 minutes (and every 5 min up to 20 if low). Trap: APGAR is not used to guide resuscitation decisions — resuscitation begins before the 1-minute score; APGAR is a retrospective assessment of response.

Neonatal jaundice

A guaranteed question area. Distinguish physiological from pathological:

Feature	Physiological	Pathological
Onset	After 24 h (term), 48 h (preterm)	Within first 24 h
Peak	Day 3–4 (term), day 5–7 (preterm)	Variable, rapidly rising
Rate of rise	<5 mg/dL/day	>5 mg/dL/day
Direct fraction	Normal	Conjugated >2 mg/dL or >20% → always pathological
Duration	<14 days (term)	Prolonged >14 days

• Jaundice within 24 h = haemolysis until proven otherwise (Rh incompatibility, ABO incompatibility, G6PD deficiency).
• Breastfeeding jaundice (early, day 2–4, due to inadequate intake/dehydration) vs breast-milk jaundice (late, day 5–7 onwards, persists weeks, due to β-glucuronidase). Trap: do NOT stop breastfeeding for breast-milk jaundice.
• Kernicterus: bilirubin-induced neurotoxicity → posturing, opisthotonus, later choreoathetoid cerebral palsy, high-frequency sensorineural hearing loss, upward gaze palsy. Bilirubin deposits in basal ganglia (globus pallidus, subthalamic nucleus).
• Treatment: phototherapy (blue light, 460–490 nm; converts to lumirubin/water-soluble isomers) and exchange transfusion for severe/rising levels.

Respiratory distress in the newborn

• Respiratory distress syndrome (RDS / hyaline membrane disease): preterm, surfactant deficiency, ground-glass appearance + air bronchograms, low lung volumes. Antenatal steroids prevent; surfactant + CPAP treat. Lecithin:sphingomyelin ratio <2 indicates immaturity.
• Transient tachypnoea of newborn (TTN): term/late-preterm, often post-LSCS, retained lung fluid, prominent horizontal fissure / fluid in fissures, self-limiting.
• Meconium aspiration syndrome (MAS): term/post-term, meconium-stained liquor, patchy infiltrates + hyperinflation.
• Bronchopulmonary dysplasia: chronic lung disease, O₂ requirement at 36 weeks corrected age.

Neonatal sepsis

• Early-onset (<72 h): vertical transmission. In India, common organisms include Klebsiella, E. coli, and other gram-negatives plus Group B Streptococcus (more prominent in Western data).
• Late-onset (>72 h): nosocomial — Staphylococcus (including CoNS), Klebsiella, Candida.
• Screen: CRP, micro-ESR, immature:total neutrophil ratio (I:T >0.2), low ANC.

Other neonatal high-yield

• TORCH infections — periventricular calcification (CMV) vs basal ganglia/diffuse intracranial calcification (Toxoplasma); cataract + PDA + deafness (congenital rubella triad).
• Necrotising enterocolitis: preterm, feed intolerance, pneumatosis intestinalis on X-ray, portal venous gas; bloody stools.
• Retinopathy of prematurity: uncontrolled oxygen + prematurity; screen low-birth-weight/preterm babies.
• Hypothermia, hypoglycaemia (IDM, IUGR), and Vitamin K prophylaxis (haemorrhagic disease of newborn) are frequently tested one-liners.

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Growth & Development

This group is the easiest source of guaranteed marks if memorised cold. Expect 2–4 questions.

Growth — weight, length, head circumference

Parameter	Birth	Key milestones
Weight	~3 kg	Doubles by 5 months, triples by 1 year, quadruples by 2 years
Length/Height	~50 cm	~75 cm at 1 yr; doubles birth length (~100 cm) by 4 years
Head circumference	~35 cm	~47 cm at 1 yr; brain growth fastest in infancy

• Weight gain: ~30 g/day in first 3 months; physiological weight loss up to 10% in first week, regained by day 10–14.
• Anterior fontanelle closes by 9–18 months; posterior fontanelle closes by 1–2 months. Delayed closure → hypothyroidism, rickets, raised ICP, Down syndrome.
• Mid-parental height formula and the use of WHO growth charts (standard up to 5 years) and IAP charts (5–18 years in India) are testable.

Developmental milestones

Milestones are the single most asked sub-topic. Memorise these gross-motor anchors:

Age	Gross motor	Fine motor/adaptive	Language	Social
1 mo	Head lag, flexed	Follows to midline	Alerts to sound	Regards face
3 mo	Partial head control	Hands open, midline	Coos	Social smile (by 6–8 wk)
5–6 mo	Rolls over, sits with support	Palmar/raking grasp, transfers	Monosyllables (ba, da)	Recognises strangers
8–9 mo	Sits without support, crawls	Immature pincer	Bisyllables (mama/dada non-specific)	Stranger anxiety
10 mo	Stands holding	—	—	Waves bye-bye
12 mo	Stands alone, walks with support	Mature pincer grasp	1–2 words with meaning	Comes when called
15 mo	Walks alone	Tower of 2 cubes, scribbles	4–6 words	Points to wants
18 mo	Runs, walks up stairs (with help)	Tower of 3–4 cubes	10 words	Feeds self
2 yr	Climbs stairs (2 feet/step)	Tower of 6–7 cubes; vertical line	2-word sentences, 50% intelligible	Removes garment
3 yr	Tricycle, stairs alternating	Tower of 9–10; copies circle	3-word sentences, 75% intelligible	Knows name/age/sex
4 yr	Hops on one foot	Copies cross	Counts; 100% intelligible	Plays cooperatively
5 yr	Skips	Copies square/triangle	Asks meaning of words	Dresses/undresses

Drawing mnemonic: Circle 3, Cross 4, Square/triangle 5 (approx) → "the shapes climb with age." A 6-year-old copies a diamond.

• Red flags / delayed development: no social smile by 8 weeks, no head control by 3 months, not sitting by 9 months, not walking by 18 months, no words by 18 months. These warrant evaluation.
• Primitive reflexes: Moro (disappears by 5–6 mo), palmar grasp (by 4–6 mo), rooting, asymmetric tonic neck reflex (by 6 mo), Babinski (up-going normal till ~1–2 yr), parachute (appears 9 mo, persists). Persistence of primitive reflexes → cerebral palsy.

Puberty and SMR (Tanner staging)

• First sign of puberty in girls = thelarche (breast bud, ~10–11 yr); in boys = testicular enlargement (≥4 mL or >2.5 cm, ~11–12 yr).
• Menarche occurs at SMR/Tanner stage 4, after peak height velocity in girls.
• Precocious puberty: <8 yr girls, <9 yr boys. Delayed: no breast by 13 (girls), no testicular enlargement by 14 (boys).

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Nutrition

A reliably tested group (2–3 questions) covering breastfeeding, malnutrition classification, micronutrient deficiencies, and IYCF guidelines.

Breastfeeding and IYCF

• Exclusive breastfeeding for the first 6 months — no water, no top feeds.
• Initiate breastfeeding within 1 hour of birth; colostrum is rich in IgA, lactoferrin, and vitamin A — do not discard.
• Complementary feeding from completed 6 months, continuing breastfeeding up to 2 years and beyond.
• Human milk vs cow's milk: human milk has lower protein and electrolytes, higher lactose, whey:casein ~60:40 (vs cow ~20:80), more LCPUFA. Cow's milk is deficient in iron and vitamin C and has renal solute load issues — not for infants <1 yr.

Protein-Energy Malnutrition (PEM) and SAM

WHO definition of Severe Acute Malnutrition (SAM) in 6–59 months:

• Weight-for-height/length Z-score < –3 SD, OR
• MUAC < 11.5 cm (mid-upper arm circumference), OR
• Bilateral pitting pedal oedema (nutritional/kwashiorkor).

Feature	Marasmus	Kwashiorkor
Core deficit	Total calorie deficiency	Protein deficiency (relative)
Oedema	Absent	Present (pitting)
Weight	Severely low	May be masked by oedema
Appearance	"Old man" facies, wasted, alert/irritable, ravenous	Moon face, apathetic, anorexia
Skin/hair	—	Flaky-paint dermatosis, flag sign, hypopigmentation
Fatty liver	Absent	Present (hepatomegaly)

• Management of SAM follows the WHO 10 steps; key trap points: treat/prevent hypoglycaemia, hypothermia, dehydration first; use ReSoMal (lower sodium, higher potassium) for rehydration; cautious feeding with F-75 (stabilisation) then F-100 / RUTF (catch-up growth); do NOT give iron in the initial stabilisation phase (give after week 2).
• Refeeding syndrome → hypophosphataemia, hypokalaemia, hypomagnesaemia.

Micronutrient deficiencies (classic exam fodder)

Nutrient	Deficiency disease / sign
Vitamin A	Night blindness, Bitot spots, keratomalacia, xerophthalmia
Vitamin D	Rickets — rachitic rosary, frontal bossing, genu varum, Harrison sulcus, craniotabes, widened wrists
Vitamin C	Scurvy — subperiosteal haemorrhage, bleeding gums, frog-leg position, Frankel line, Wimberger ring
Vitamin B1 (thiamine)	Infantile beriberi (cardiac)
Vitamin B12/folate	Megaloblastic anaemia
Iron	Microcytic hypochromic anaemia, pica, koilonychia
Iodine	Goitre, cretinism
Zinc	Acrodermatitis enteropathica (periorificial/acral dermatitis, diarrhoea, alopecia)
Niacin (B3)	Pellagra — dermatitis, diarrhoea, dementia

• National programmes: Vitamin A prophylaxis (9 months with measles dose, then 6-monthly up to 5 yr — 9 megadoses total), and IFA (iron-folic acid) supplementation under Anaemia Mukt Bharat.

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Infectious Disease

The largest single clinical bucket — immunisation alone can fetch 2–3 questions, with exanthems, TB, and diarrhoeal disease adding more.

National Immunization Schedule (NIS) — must memorise

Age	Vaccines
Birth	BCG, OPV-0, Hepatitis B (birth dose)
6 weeks	Pentavalent-1 (DPT+HepB+Hib), OPV-1, fIPV-1, Rotavirus-1, PCV-1
10 weeks	Pentavalent-2, OPV-2, Rotavirus-2
14 weeks	Pentavalent-3, OPV-3, fIPV-2, Rotavirus-3, PCV-2
9–12 months	MR-1 (measles-rubella), JE-1 (endemic), PCV-booster, Vitamin A (1st dose)
16–24 months	MR-2, DPT-booster-1, OPV-booster, JE-2
5–6 years	DPT-booster-2
10 years	Td
16 years	Td
Pregnancy	Td-1, Td-2 (or Td-booster)

High-yield vaccine facts and traps:

• Live vaccines: BCG, OPV, MR/measles, rotavirus, JE (live attenuated), varicella, MMR, yellow fever. Live vaccines are contraindicated in immunodeficiency and pregnancy.
• BCG: intradermal, left deltoid; a wheal then ulcer then scar over 6–12 weeks is normal. No scar does not mandate re-vaccination universally per current policy nuances — but classic teaching repeats BCG if no scar by 6 months in some protocols (know the controversy).
• OPV can cause VAPP (vaccine-associated paralytic poliomyelitis); IPV (killed, injectable) does not. India uses both in eradication endgame; fIPV = fractional IPV intradermally.
• Cold chain: most heat-sensitive = OPV (kept at the bottom/coldest, –20°C in storage). Vaccines damaged by freezing = DPT, Hep B, TT, IPV (adsorbed vaccines).
• Vaccine Vial Monitor (VVM) is on OPV.
• Rotavirus: oral, live; contraindication/caution — history of intussusception.

Common exanthematous fevers

Disease	Agent	Hallmark
Measles	Measles (paramyxo)	Koplik spots, cephalocaudal maculopapular rash, fever + 3 C's (cough, coryza, conjunctivitis); complication: SSPE (late), pneumonia (commonest cause of death)
Rubella	Rubella	Posterior auricular/suboccipital lymphadenopathy, mild rash; teratogenic
Chickenpox	VZV	Pleomorphic vesicles in crops, centripetal, "dew drop on rose petal"
Roseola (exanthem subitum)	HHV-6	High fever 3–4 days, then rash after fever subsides
Erythema infectiosum (fifth disease)	Parvovirus B19	"Slapped cheek"; aplastic crisis in hemolytic anaemia
Hand-foot-mouth	Coxsackie A16	Oral + palm/sole vesicles
Scarlet fever	GAS	Sandpaper rash, strawberry tongue, circumoral pallor, Pastia lines

Other infectious high-yield

• Diarrhoea/ORS: WHO low-osmolarity ORS (245 mOsm/L; Na 75, glucose 75). Zinc for 14 days (10 mg <6 mo, 20 mg ≥6 mo). Classify dehydration by clinical signs (Plan A/B/C). Rotavirus is the leading cause of severe infantile diarrhoea.
• Pneumonia (IMNCI/WHO): fast breathing thresholds — ≥60/min (<2 mo), ≥50/min (2–12 mo), ≥40/min (1–5 yr). Chest indrawing = severe pneumonia → refer.
• Tuberculosis in children: Mantoux ≥10 mm positive; primary complex (Ghon focus + lymph node); NTEP paediatric regimen weight-band dosing; BCG protects against disseminated TB/TBM, not pulmonary primary infection.
• Enteric fever, dengue (warning signs, fluid management), and kala-azar appear in tropical-disease overlaps.

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Cardiology

Paediatric cardiology is conceptually dense but pattern-driven — 2–3 questions, often image/vignette based. The cyanotic vs acyanotic split is the master framework.

Acyanotic (left-to-right shunt) lesions

• VSD — most common congenital heart disease overall; harsh pansystolic murmur at lower left sternal border; small VSDs often close spontaneously.
• ASD — wide fixed split S2; ostium secundum commonest.
• PDA — continuous "machinery murmur"; associated with congenital rubella and prematurity; closes with indomethacin/ibuprofen (prostaglandin inhibitors), kept open with PGE1 in duct-dependent lesions.
• Large shunts → pulmonary hypertension → reversal of shunt → Eisenmenger syndrome (now cyanotic, inoperable).

Cyanotic lesions — the "5 T's" mnemonic

Truncus arteriosus (1 vessel), Transposition of great arteries (2 — TGA), Tricuspid atresia (3), Tetralogy of Fallot (4), TAPVC (Total Anomalous Pulmonary Venous Connection — 5). The number matches the count.

• TOF — most common cyanotic CHD beyond infancy/overall; components: VSD, overriding aorta, pulmonary stenosis, RVH; boot-shaped heart; tet spells relieved by squatting / knee-chest position (↑ SVR). Tet spell management: knee-chest, oxygen, morphine, fluids, beta-blocker, phenylephrine.
• TGA — most common cyanotic CHD presenting in the neonatal period / at birth; "egg-on-side / egg-on-a-string" appearance; duct-dependent → keep PDA open with PGE1, then balloon atrial septostomy (Rashkind).
• TAPVC (obstructed, supracardiac) — "snowman / figure-of-8" appearance; severe early cyanosis + respiratory distress.
• Ebstein anomaly — associated with maternal lithium; "box-shaped" cardiomegaly, atrialised RV.

Rheumatic fever / RHD

Still vital in the Indian context. Modified Jones criteria — diagnosis needs 2 major or 1 major + 2 minor with evidence of preceding GAS infection.

• Major (JONES): Joints (migratory polyarthritis), O = carditis (heart), Nodules (subcutaneous), Erythema marginatum, Sydenham chorea.
• Minor: fever, arthralgia, raised ESR/CRP, prolonged PR interval.
• Most common valve affected: mitral. Carditis is the only manifestation causing permanent damage. Secondary prophylaxis with benzathine penicillin.

Kawasaki disease

A favourite because of coronary complications. Fever ≥5 days + 4 of 5: bilateral non-purulent Conjunctivitis, Rash (polymorphous), Extremity changes (edema/desquamation), Adenopathy (cervical, unilateral), Mucosal changes (strawberry tongue, cracked lips) → mnemonic CRASH and burn (fever). Complication: coronary artery aneurysm. Treatment: IVIG + aspirin.

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Respiratory

Paediatric respiratory problems are mostly clinical-vignette questions about acute distress and wheeze — 1–2 questions.

Upper airway / stridor

Condition	Age	Classic clue
Croup (laryngotracheobronchitis)	6 mo–3 yr	Parainfluenza; barking/seal cough, inspiratory stridor; "steeple sign" on neck X-ray; treat with nebulised adrenaline + steroids
Acute epiglottitis	2–6 yr	H. influenzae type b; drooling, tripod position, toxic, "thumbprint sign"; do NOT examine throat — secure airway
Bacterial tracheitis	Variable	Staph aureus; toxic, no response to croup therapy
Laryngomalacia	Neonate/infant	Most common cause of chronic/congenital stridor; worsens supine, improves prone; self-resolving
Foreign body	Toddler	Sudden choking, unilateral wheeze/hyperinflation

Lower airway

• Bronchiolitis — RSV, <2 years, peak ~6 months; wheeze + hyperinflation, supportive care (no routine bronchodilators/steroids).
• Asthma in children — episodic wheeze, atopy, reversible obstruction; inhaled corticosteroids are controller mainstay.
• Cystic fibrosis — autosomal recessive, CFTR gene (chromosome 7, ΔF508); recurrent infection (Pseudomonas, Staph), pancreatic insufficiency, meconium ileus, raised sweat chloride (>60 mmol/L), infertility.
• Whooping cough (pertussis) — paroxysmal cough with inspiratory whoop, post-tussive vomiting, lymphocytosis; "100-day cough."

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Genetics

Dysmorphology and inheritance are pure recall and image-recognition — 2–3 questions, very scoring.

Chromosomal / trisomy syndromes

Syndrome	Karyotype	Hallmarks
Down	Trisomy 21 (47,XX/XY,+21)	Upslanting palpebral fissures, epicanthal folds, single palmar crease, hypotonia, Brushfield spots, sandal gap, AV canal defect, duodenal atresia, ↑ ALL/AML & Alzheimer; most common cause = non-disjunction; risk ↑ with maternal age; translocation type (Robertsonian 14;21) is inheritable
Edward	Trisomy 18	Rocker-bottom feet, clenched fist with overlapping fingers, micrognathia, prominent occiput; poor prognosis
Patau	Trisomy 13	Cleft lip/palate, polydactyly, holoprosencephaly, microphthalmia
Turner	45,X (monosomy)	Female, short stature, webbed neck, cystic hygroma, coarctation of aorta, streak ovaries, lymphedema; NO intellectual disability typically
Klinefelter	47,XXY	Tall, hypogonadism, gynaecomastia, infertility, learning issues

Single-gene and microdeletion syndromes

• Marfan (AR? no — autosomal dominant, FBN1/fibrillin): tall, arachnodactyly, lens dislocation (upward), aortic root dilatation/dissection.
• Homocystinuria: mimics Marfan but downward lens dislocation, thrombosis, intellectual disability, autosomal recessive.
• Fragile X: most common inherited intellectual disability, long face, large ears, macro-orchidism, CGG repeat (trinucleotide).
• DiGeorge (22q11 deletion): CATCH-22 — Cardiac (conotruncal), Abnormal facies, Thymic aplasia, Cleft palate, Hypocalcaemia.
• Prader-Willi (paternal deletion 15q) — hyperphagia, obesity, hypotonia; vs Angelman (maternal deletion 15q) — "happy puppet," ataxia, laughter — classic genomic imprinting example.
• Williams syndrome (7q11, elastin): elfin facies, supravalvular aortic stenosis, hypercalcaemia, overly friendly ("cocktail party") personality.
• Noonan: "male Turner" phenotype but normal karyotype, pulmonary stenosis.

Inborn errors of metabolism (one-liners)

• Phenylketonuria (PAH deficiency): musty odour, fair skin, intellectual disability; treat with low-phenylalanine diet; newborn screening.
• Galactosemia: vomiting, jaundice, cataract, E. coli sepsis; stop galactose/lactose.
• Tay-Sachs: cherry-red spot, no hepatomegaly, hexosaminidase A deficiency.
• Niemann-Pick / Gaucher: cherry-red spot/hepatosplenomegaly distinctions.
• Maple syrup urine disease: branched-chain ketoaciduria, sweet-smelling urine.

Inheritance pattern traps

• X-linked recessive: Duchenne/Becker, haemophilia A/B, G6PD, colour blindness — affects males, carrier mothers, no male-to-male transmission.
• X-linked dominant: vitamin D-resistant rickets (hypophosphataemic), Rett syndrome (lethal in males), Alport (mostly).
• Mitochondrial: maternal inheritance only — MELAS, LHON, Leigh.
• Autosomal dominant with anticipation: trinucleotide repeat disorders.

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Cross-Subject Integration Points

Paediatrics overlaps heavily with other subjects, and the exam loves these intersections:

• Microbiology: vaccine immunology, organisms of neonatal sepsis, TORCH agents, RSV/rotavirus.
• Biochemistry: inborn errors of metabolism, enzyme deficiencies, newborn screening.
• Pharmacology: PGE1 to keep PDA open, indomethacin to close it, drug dosing by weight, contraindicated drugs in lactation, teratogens (lithium → Ebstein, valproate → NTD, warfarin, ACE inhibitors).
• PSM/Community Medicine: NIS, IMNCI, RMNCH+A, Anaemia Mukt Bharat, ICDS, Janani Suraksha Yojana, IMR/NMR/U5MR definitions and India's current figures — this is one of the densest overlap zones.
• Medicine: anaemias, nephrotic syndrome, congenital heart disease physiology, endocrinology (congenital hypothyroidism, CAH).
• Genetics & Pathology: peripheral smears, karyotyping, leukaemia (ALL is the most common childhood malignancy), Wilms tumour, neuroblastoma.
• Obstetrics: neonatal resuscitation, IUGR, prematurity, GDM → infant of diabetic mother.

A particularly high-yield overlap: congenital hypothyroidism — most common preventable cause of intellectual disability, screened by newborn TSH, presents with prolonged jaundice, constipation, umbilical hernia, large fontanelle, macroglossia, hypotonia; treat early with levothyroxine.

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Recent Updates and Guideline Shifts

Stay current — examiners increasingly test recently changed recommendations:

• Polio endgame: continued use of bivalent OPV + fractional IPV (fIPV) intradermally; movement toward IPV-only as global eradication advances.
• Rotavirus and PCV are now fully integrated into the Universal Immunization Programme across India — expect questions assuming their presence in the schedule.
• Measles-Rubella (MR) has replaced standalone measles in the NIS; India targets measles and rubella elimination.
• Delayed cord clamping and room-air resuscitation for term newborns reflect current NRP teaching.
• SAM management with community-based RUTF and the WHO 10-step inpatient protocol; emphasis on MUAC and oedema for community screening.
• Kangaroo Mother Care (KMC) strongly endorsed for low-birth-weight and preterm stable neonates — continuous skin-to-skin + exclusive breastfeeding; improves survival.
• HPV vaccine rollout discussions for adolescent girls (cervical cancer prevention) — increasingly examinable.
• Updated growth standards: WHO charts (0–5 yr) and revised IAP charts (5–18 yr) for India.

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Study Roadmap

Phase 1 — Build the spine (first pass)

Start with the universally tested cores in this order: Immunisation → Growth & Development → Neonatology → Nutrition. These four alone account for the majority of marks and never go out of fashion. Use a standard text (Ghai/OP Ghai or Nelson essentials) plus a focused PG prep module.

Phase 2 — Systems

Layer in Cardiology (cyanotic vs acyanotic framework), Genetics/dysmorphology (with images), Respiratory, Infectious disease exanthems. For genetics and cardiology, image recognition is decisive — drill facies, X-rays, and ECGs.

Phase 3 — Integration and recall

Make condensed self-notes: one page each for the schedule, milestones table, malnutrition cut-offs, and the 5 T's. Solve previous-year questions (PYQs) topic-wise — Paediatrics repeats itself remarkably, so PYQs are the single highest-yield resource. Practise image-based grand tests.

Last-week revision strategy

• Day-wise rapid revision of: NIS table, milestone table, growth doubling/tripling facts, SAM/MUAC cut-offs, fontanelle closure, APGAR, NRP ratios.
• Re-read your one-page sheets twice daily; do not start new topics.
• Run through classic associations (cherry-red spot, boot-shaped heart, snowman, steeple/thumbprint signs).
• Revise teratogens and live-vaccine contraindications.
• Solve 2–3 short PYQ sets daily to keep recall warm.

The golden rule: in Paediatrics, breadth of recall beats depth of reasoning. Memorise the tables cold and trust the classic pattern.

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High-Yield Mnemonics

• 5 T's of cyanotic CHD — Truncus(1), TGA(2), Tricuspid atresia(3), TOF(4), TAPVC(5).
• JONES — major Jones criteria for rheumatic fever.
• CATCH-22 — DiGeorge (Cardiac, Abnormal facies, Thymic aplasia, Cleft palate, Hypocalcaemia, 22q11).
• CRASH and burn — Kawasaki (Conjunctivitis, Rash, Adenopathy, Strawberry tongue/mucosa, Hands/feet, + Fever ≥5 days).
• 3 C's of measles — Cough, Coryza, Conjunctivitis (+ Koplik spots).
• Shapes by age — Circle 3, Cross 4, Square 5, Diamond 6.
• Live vaccines — "Mr. BOY VJ" (MMR/MR, BCG, OPV, Yellow fever, Varicella, JE, Rotavirus).

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Rapid-Fire One-Liners

1. Most common congenital heart disease overall — VSD; most common cyanotic CHD presenting at birth — TGA; most common cyanotic CHD overall/beyond infancy — TOF.
2. SAM cut-offs — WHZ < –3 SD, MUAC < 11.5 cm, or bilateral pedal oedema.
3. Jaundice appearing within 24 hours of birth = haemolytic until proven otherwise.
4. First sign of puberty — breast bud in girls, testicular enlargement (≥4 mL) in boys.
5. Most heat-sensitive vaccine — OPV; vaccines damaged by freezing — DPT, Hep B, IPV, TT (adsorbed).
6. Exclusive breastfeeding for 6 months; complementary feeding from 6 months; continue breastfeeding to 2 years.
7. Chest-compression to ventilation ratio in neonatal resuscitation — 3:1; start compressions if HR <60 despite effective PPV.
8. Bilirubin in kernicterus deposits in the basal ganglia (globus pallidus, subthalamic nucleus).
9. Steeple sign = croup; thumbprint sign = epiglottitis; snowman/figure-8 = TAPVC; boot-shaped heart = TOF; egg-on-string = TGA.
10. Most common cause of Down syndrome — meiotic non-disjunction; risk increases with maternal age.
11. Weight doubles by 5 months, triples by 1 year, quadruples by 2 years; anterior fontanelle closes by 9–18 months.
12. Tet spell relieved by squatting / knee-chest position; treat duct-dependent lesions by keeping PDA open with PGE1.