Necrotizing enterocolitis (NEC) affected 87 infants, with a 26.4% mortality rate. This study highlights an increasing incidence of NEC and identifies associated risk factors in mothers and infants, including low birth weight.
Area of Science:
Neonatalogy
Pediatric Surgery
Obstetrics
Background:
Necrotizing enterocolitis (NEC) is a significant cause of neonatal mortality.
Understanding NEC incidence and risk factors is crucial for improving infant outcomes.
Previous studies have indicated associations between NEC and prematurity, but further investigation into obstetric risk factors is warranted.
Purpose of the Study:
To analyze the incidence, mortality, and risk factors associated with necrotizing enterocolitis (NEC) in infants over a 15-year period.
To identify maternal and infant characteristics that increase the risk of developing NEC.
To describe the treatment modalities and sequelae of NEC in a neonatal population.
Main Methods:
Retrospective analysis of 87 infants diagnosed with NEC between 1971 and 1985 at Mercy Maternity Hospital, Melbourne.
Data collection included infant birth weight, gestational age, maternal risk factors (gestational diabetes, pre-existing diabetes, estriol excretion), and treatment outcomes.
Statistical analysis was performed to determine incidence rates, mortality, and associations between risk factors and NEC development.
Main Results:
The incidence of NEC increased from 0.07% to 0.25% of livebirths during the study period.
A significant association was found between NEC and higher-risk obstetric populations, including gestational diabetes and subnormal estriol excretion.
Very low birth weight (VLBW) infants (<1500g) comprised 29.9% of NEC cases, with a mean age of onset of 9.9 days.
The overall mortality rate for NEC was 26.4%, contributing 2.6% to all neonatal deaths.
Colonic strictures, fistulas, and short-gut syndrome were observed sequelae in survivors.
Conclusions:
The incidence of NEC is increasing, necessitating continued surveillance and research into preventative strategies.
Maternal risk factors, such as gestational diabetes, play a significant role in NEC development.
Early identification of high-risk infants and prompt medical or surgical intervention are essential for managing NEC and reducing mortality.