• Vittorio Romagnoli, Annalisa Pedini, Monica Santoni, Grazia Scutti, Massimo Colaneri, Marco Pozzi, Paola E Cogo, and Virgilio P Carnielli.
• 1Department of Pediatrics,Presidio Ospedaliero G Salesi,Ancona,Marche,Italy.
• Cardiol Young. 2018 Aug 1; 28 (8): 995-1000.

AbstractAimThe aim of this study was to determine the spontaneous closure rate of patent ductus arteriosus at a 2-year follow-up, following failed medical therapy and beyond initial hospital discharge, and to evaluate in-hospital spontaneous or pharmacological closure rates.Materials and methodsA retrospective evaluation was conducted in a cohort of preterm infants admitted to the Neonatal ICU of Ancona between January, 2004 and June, 2013. Inclusion criteria were gestational age between 24+0 and 29+6 weeks or birth weight 1.5 mm, a left atrium-to-aorta ratio >1.4, and/or reversal of end-diastolic flow in the aorta >30% of the anterograde. First-line treatment was intravenous ibuprofen. Intravenous indomethacin was used if ibuprofen failed. Surgical ligation was considered in haemodynamically significant patent ductus arteriosus after medical treatment.

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