“…In contrast, our patients were only treated if they had a persistent PDA (affecting the respiratory and cardiovascular systems with ibuprofen and surgical ligation if refractory to two courses of ibuprofen or if the gastrointestinal or renal systems were involved), with medical treatment at about 12 days of age or surgical treatment at about five weeks of life. The strategy and timing of treatment of the duct in our study is very similar to recently conducted national BPSU survey and is representative of practice in the United Kingdom . With this moderately delayed, selective treatment of symptomatic PDA, early echocardiography performed in the first 72 hours of age did not predict the subsequent need for treatment.…”