Table 2

 Occurrence of complications in 30 conservatively managed preterm neonates ⩽30 weeks’ gestation, requiring ventilation and surfactant treatment: comparison with data from the Vermont Oxford Network

Proportion (%) of neonates developing complications
Conservative treatment*(N = 30)Medical treatment†(reference database)
*See Methods: Adjustment of ventilation and fluid restriction, and if PDA still present, ductal ligation.
†Range based on the data from the Vermont Oxford Network and data on outcome with ibuprofen and/or indometacin, as provided by Orphan Europe (–26
Necrotising enterocolitis04–6
Intraventricular haemorrhage grade 326–7
Chronic lung disease718–28