Towards rational management of the patent ductus arteriosus: the need for disease staging

Abstract

Patent ductus arteriosus (PDA) is common problem, with rates of 40–55% in babies born less than 29 weeks’ gestation,1 2 yet decisions related to management remain highly controversial. Despite numerous studies on the topic there remains uncertainty with respect to diagnosis, assignment of clinical importance, whether treatment is indicated and if so the preferred treatment modality. The most fundamental question remains unanswered: does a PDA cause acute physiological or clinical change that either acutely or chronically leads to organ damage, which further leads to important neonatal morbidities? Put simply is the PDA an “innocent bystander” or is it pathological to the extent that early detection and intervention is warranted to prevent neonatal morbidity?