Two-Year Outcomes in Preterm Infants Suffering from Moderate to Severe Bronchopulmonary Dysplasia with or without Associated Pulmonary Hypertension.

OBJECTIVES

to assess the impact of pulmonary hypertension (PH) on short and long-term respiratory and neurodevelopmental outcomes in extremely preterm infants, diagnosed with moderate to severe bronchopulmonary dysplasia (MSBPD).

STUDY DESIGN

cohort study, with retrospective analysis of the medical records of infants born at ≤32 weeks gestation admitted to a single neonatal tertiary centre from 2010 to 2020. Primary outcome was consistent with hospital re-admissions by 2 years post menstrual age. Neurodevelopment was assessed using Bayley's Scales of Infant and Toddler Development 3rd edition (Bayley-III) as a secondary outcome.

RESULTS

201 infants with no PH and 23 infants with PH were analysed. The PH group showed higher risk for respiratory and paediatric intensive care unit re-admission (65%) during the first 2 years of life (OR: 3.15; 95% CI: 1.28 to 7.78; p<0.5). In contrast to current published literature, our study showed that pulmonary hypertension complicating moderate to severe bronchopulmonary dysplasia had no negative impact on neurodevelopmental outcomes (OR: 1.87; 95% CI: 0.72 to 4.88; p value=0.19). However, in our population, ethnicity, chorioamnionitis and need for persistent ductus arteriosus treatment were all independently associated with poor neurodevelopmental outcomes (p values <0.5).

CONCLUSION

infants with MSBPD associated pulmonary hypertension (MSBPD-PH) are more likely to need intensive care and respiratory hospital re-admissions. Ethnicity, chorioamnionitis and need for ductus arteriosus treatment are independently associated with poor neurodevelopmental outcomes regardless of the pulmonary hypertension status.