Pediatric and adult patients with pulmonary hypertension and a challenging case

A very important retrospective, single-center, observational study of patients with pulmonary hypertension (PH-Groups 1,4, and 5) from İstanbul University Institute of Cardiology and their experience over 10 years is presented by Ümit Yaşar Sinan et al. It would be helpful to compare it with data from other centers focusing on PH. Another PH study of pediatric patients submitted by Gazi University, Ankara makes the picture complete. Veysel Oktay et al. report the scientific publication performance of abstracts presented at the National Cardiology Congress between 2011 and 2015. I hope these valuable results encourage the presenters to publish their abstracts as full papers. Hua Cao et al. describe 12 patients with patent ductus arteriosus (PDA) for whom percutaneous PDA occlusion was performed without the use of X-ray. This makes this technique safer for the patients and the physicians