In this cohort, prospective clinical cohort study was used to establish a follow-up cohort of preterm infants with different gestational ages. The regular monitoring indexes of physical development and neuropsychological development of preterm infants from birth to 3 years after birth were collected. The influencing factors of preterm infants' development at different stages were recorded, and the high-risk factors leading to different stages of preterm infants' growth retardation were analyzed.
Age range
24 Weeks – 37 Weeks
Sex
ALL
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Assessment of extrauterine growth retardation of preterm infants at 36-40 weeks of gestational age correction
Timeframe: correct gestational age 36~40 weeks
Assessment of neurodevelopmental retardation of preterm infants at 36-40 weeks of gestational age correction
Timeframe: correct gestational age 36~40 weeks
Assessment of low weight of preterm infants at 2 to 3 years of age
Timeframe: 2~3 years old
Assessment of growth retardation of preterm infants at 2 to 3 years of age
Timeframe: 2~3 years old
Assessment of small head circumference of preterm infants at 2 to 3 years of age
Timeframe: 2~3 years old
Assessment of neurodevelopmental retardation of preterm infants at 2 to 3 years of age
Timeframe: 2~3 years old