Olariu, Laura, Olariu, Gabriela, Ognean, Livia, Olariu, S., Marginean, Otilia, and Boia, E. S.
Introduction: Necrotising enterocolitis (NEC) is an acquired gastrointestinal disease associated with significant morbidity and mortality in preterm newborns. Taking into account the catastrophic development of this disease, it is necessary to focus research on prevention strategies and identify predictive risk factors for its occurrence. Aim: The aim of this study was to determine the incidence of NEC and to identify the main risk factors associated with NEC in preterm infants with gestational age(GA) ≤32 weeks admitted to neonatal intensive care units(NICUs) in Romania. Material and methods: This was a retrospective study based on the data collected in a standardised format for all preterm infants with GA ≤32 weeks born over a period of 2 years (January 2010-december 2011) and admitted to 12 tertiary-level NICUs in Romania. It was used data registered in the National Registry of Neonatal Respiratory Distress (NRNRD). A diagnosis of NEC was made based on clinical, radiological and/or histopatological evidence of stage II or III, acording to Bell's criteria. Logistic regression analysis was performed to determine the significant risk factors associated with NEC. Results: There were 1696 neonates under 32 weeks of gestation that met inclusion criteria; 1605 did not have NEC, while 91(5,3%) met criterion for NEC. Lenght of hospital stay and mortality were higher in neonates with NEC than those without NEC. Logistic regression analysis showed that smal for gestational age(SGA) and nosocomial infections were the most important risk factors for NEC. Other factors that were associated with an increased risk of NEC were bronchopulmonary displasia (BPD), use of nasal continuos positive airway pressure (CPAP), sepsis, apnea of prematurity, the lack of antenatal glucocorticoids and outborn pacients. Male gender and PDA were not statistical significantly correlated with NEC (borderline statistical significance). Conclusions: The incidence of NEC was higher in this study (5,3%). Low birth weight, nosocomial infections, BPD, CPAP, apnea and lack of antenatal glucocorticoids were associated with an increased risk of NEC in Romanian preterm infants under 32 weeks of gestation. Male gender and PDA were not statistical significantly correlated with NEC (at the limit of statistical significance). [ABSTRACT FROM AUTHOR]