This prospective cohort study assessed longitudinal growth of Extremely low birth weight (ELBW) infants at 5 y of age. ELBW infants discharged alive during 2009-2011 were prospectively followed till 5 y of age. Forty-five matched controls were enrolled. The weight, length, and occipitofrontal circumference were recorded and Z-scores were calculated using the WHO software. The primary outcome was the comparison of growth parameters of the ELBW cohort with controls. Forty-seven ELBW and 45 controls were assessed at 5 y. In ELBW cohort, 17 (36.2%) were underweight, 13 (27.7%) were stunted, 11 (23.4%) were wasted, and 6 (15.7%) had microcephaly at 5 y. As compared to controls, the proportion of underweight and stunting was significantly higher among ELBW infants (p < 0.001). There was no significant difference in Z-scores at 2 and 5 y. ELBW infants have significant undernutrition at 5 y of age and there is no catch-up growth beyond 2 y.
Keywords: Catch up; Extremely low birth weight; Growth; Nutrition.