PE19.8 | Low Birth Weight — Summary & Reflection

KEY TAKEAWAYS

Low Birth Weight (LBW) is defined as birth weight <2500 g regardless of gestational age; VLBW <1500 g; ELBW <1000 g. The two primary mechanisms are preterm birth (<37 weeks, organ immaturity — RDS, IVH, NEC, ROP, apnoea, PDA) and SGA/IUGR (birth weight <10th percentile for gestation, caused by placental insufficiency or fetal/maternal factors). Asymmetric IUGR (head-sparing, depleted liver glycogen) is the most common IUGR pattern in India — the alert, hungry SGA neonate is at greatest risk of hypoglycaemia in the first few hours. Complications of LBW include hypothermia, hypoglycaemia, jaundice, sepsis, and feeding difficulties in all LBW infants, with preterm-specific complications (RDS, IVH, NEC) in those <34 weeks. Management centres on warmth (warm chain/incubator/KMC), early EBM feeding, blood glucose monitoring, Vitamin K prophylaxis, and targeted treatment of complications. KMC (continuous skin-to-skin + exclusive breastfeeding + early discharge) reduces mortality in stable LBW neonates and is WHO-recommended. India-specific context: maternal anaemia, malnutrition, and hypertensive disorders drive the high LBW burden; antenatal IFA supplementation and ANC attendance are primary prevention.

REFLECT

Reflect on the two infants in the hook — both 1900 g, born within an hour of each other, but facing completely different clinical trajectories. How did the distinction between preterm and SGA change your approach to each? Think about the Barker hypothesis: a baby who survives IUGR may develop hypertension and diabetes in adulthood because of fetal programming. How does this change the way you view LBW — from a neonatal emergency to a chronic disease risk factor? Finally, consider the KMC scenario: a simple intervention that costs nothing and requires no equipment is reducing neonatal mortality. What are the barriers to its implementation in your setting, and how would you address parental hesitation? These reflections connect the neonatal ward to public health to the life course of your patient.