[Prognosis of preterm infants with a birth weight <1,501 g]

Area of Science:

• Neonatal medicine
• Perinatal research
• Developmental neurology

Background:

• Infant prognosis is strongly linked to birth weight and gestational age.
• Very low birth weight infants (<1,501 g) face significant mortality and morbidity risks.
• Cerebral palsy is a primary concern for long-term outcomes in this population.

Purpose of the Study:

• To analyze the correlation between gestational age and outcomes in very low birth weight infants.
• To determine the incidence of mortality and cerebral palsy in relation to gestational age.
• To investigate the impact of chorioamnionitis on cerebral palsy development.

Main Methods:

• Retrospective analysis of very low birth weight infant data.
• Correlation studies examining gestational age, mortality, and cerebral palsy incidence.
• Risk factor analysis for cerebral palsy, including chorioamnionitis.

Main Results:

• Mortality rates range from 10-16%, disproportionately affecting infants born at or before 26 weeks gestation.
• Cerebral palsy incidence is 8%, with rates inversely proportional to gestational age.
• Clinically verified chorioamnionitis increases cerebral palsy risk up to fourfold.

Conclusions:

• Gestational age is a critical determinant of survival and neurodevelopmental outcomes for very low birth weight infants.
• Extremely preterm infants (<26 weeks) exhibit the highest mortality and cerebral palsy risks.
• Chorioamnionitis is a significant modifiable risk factor for cerebral palsy in this vulnerable infant group.