Before revision: Classification Birth weight may be classified as: High birth weight (macrosomia): greater than Normal weight (term delivery): Low birth weight: less than Very low birth weight : less than Extremely low birth weight: less than Causes LBW is either caused by preterm birth (that is, a low gestational age at birth, commonly defined as younger than 37 weeks of gestation) or the infant being small for gestational age (that is, a slow prenatal growth rate), or a combination of both.
After revision: (VLBW)Classification Birth weight may be classified as: High birth weight (macrosomia): greater than Normal weight (term delivery): Low birth weight: less than Very low birth weight : less than Extremely low birth weight: less than Causes LBW is either caused by preterm birth (that is, a low gestational age at birth, commonly defined as younger than 37 weeks of gestation) or the infant being small for gestational age (that is, a slow prenatal growth rate), or a combination of both.