![]() The latter can also result in the babies being small for gestational age (SGA), which is most commonly defined as a baby with a weight below the 10th percentile for the gestational age. It is multifactorial in nature and can be caused by preterm delivery or restricted foetal (intra-uterine) growth. LBW classification is determined at birth and based on the absolute weight of the baby at birth regardless of gestational age. Low birthweight (LBW) in neonates is defined as a birth weight of less than 2500 g by the World Health Organization. Further research on the clinical significance of these findings and long term implications of this neurodevelopmental delay is needed. LBW babies are delayed in gross motor, cognitive and communication skills development. LBW babies that survive neonatal care in urban Haiti and live up to 24 months of age, perform similar to their NBW for weight, length and fine motor skills. There was no difference between the groups for fine motor skills. At 24 months NBW babies scored significantly higher on the Bayley scales for gross motor, cognitive and receptive and expressive communication skills. Both groups had WHZ scores <− 2 up to 15 months. LBW grew more than the NBW group during this period (22.8 cm vs. Both groups grow rapidly up to 6 months of age. The speed of weight gain decreased rapidly after 3 months in both groups. LBW and NBW babies gained a mean 15.8 g and 11.4 g per kg of weight from discharge per day respectively. We modelled the trajectories between birth and 24 months of age of NBW compared to LBW infants for weight, length, and raw scores for Bayley III assessments using mixed linear models. At 6, 12, 18 and 24 months they underwent a neurodevelopmental assessment using the Bayley Scale III (motor, cognitive and communication skills). At each visit they underwent a physical checkup (weight, length, physical abnormalities, identification of morbidities). Infants were followed at discharge and 3, 6, 12, 15, 18, 21 and 24 months of corrected gestational age. We assessed the anthropometric growth (weight and length) and neurodevelopmental delay in LBW and normal birthweight (NBW) infants born at an obstetric emergency hospital in Port au Prince, Haiti, between 20. Due to the high incidence of (pre-) eclampsia in Haiti, LBW infants are common. Low birthweight (LBW) infants are at higher risk of mortality and morbidity (growth, chronic disease and neurological problems) during their life.
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