In India, the most common cause of infant mortality in the neonatal period is:

Explanation

## Neonatal Mortality in India **Key Point:** Prematurity and low birth weight (LBW) account for approximately 35–40% of neonatal deaths in India, making it the leading cause of infant mortality in the first 28 days of life. ### Epidemiology of Neonatal Deaths | Cause | Proportion of Neonatal Deaths | Mechanism | |-------|------|----------| | Prematurity & LBW | 35–40% | Immature organ systems, respiratory distress syndrome, intraventricular hemorrhage | | Birth asphyxia | 20–25% | Perinatal hypoxia, poor resuscitation access | | Infections (sepsis, pneumonia) | 15–20% | Vertical transmission, poor hygiene, delayed antibiotics | | Congenital anomalies | 10–15% | Structural defects incompatible with life | | Others (jaundice, metabolic) | 10–15% | Severe hyperbilirubinemia, electrolyte imbalance | **High-Yield:** The Indian neonatal mortality rate (NMR) is approximately 21–25 per 1000 live births. Prematurity is the umbrella cause because it predisposes to respiratory distress, intraventricular hemorrhage, necrotizing enterocolitis, and infection. ### Why Prematurity Dominates 1. **Respiratory immaturity** — Surfactant deficiency → RDS 2. **Thermoregulation failure** — Hypothermia → metabolic acidosis 3. **Immature immune system** — Higher infection risk 4. **Fragile capillaries** — Risk of IVH and pulmonary hemorrhage **Clinical Pearl:** India's high burden of LBW (28–30% of live births) is driven by maternal malnutrition, anemia, and poor antenatal care — all modifiable risk factors. Improving maternal nutrition and ANC coverage is key to reducing NMR. **Mnemonic:** **PRIM** — **P**rematurity (most common), **R**espiratory distress, **I**nfections, **M**alformations (in order of frequency in neonatal deaths).