Many authors don’t use a Boolean logic when approaching PDA. A Pediatric cardiologist can treat an hemodynamic significant VSD left right, so why can’t I treat a HSPDA? However other authors think differently.( McNamara P., El Khuffash A.,Etc ) Very interesting “Patent Ductus Arteriosus and Bronchopulmonary Dysplasia -Associated Pulmonary Hypertension. A Bayesian Meta-Analysis.” (Jama 2023) ;”Pulmonary Hypertension in established Bronchopulmonary Dysplasia”. ( page 201 , specially)( Clin. Perinatology 2024 Lakshminrusimha S.)… pda is a conundrum because we haven’t proven yet the theorem (need of Rct) but I think there’s a clinic logic…