Does obesity matter in patients receiving venoarterial extracorporeal membrane oxygenation? The U-shaped relationship between body mass index and mortality after extracorporeal cardiopulmonary resuscitation

The impact of obesity on the prognosis of patients receiving venoarterial extracorporeal membrane oxygenation remains unclear. This study examines the association between body mass index and in-hospital mortality among patients on venoarterial extracorporeal membrane oxygenation support. This retrospective study enrolled adult patients who received venoarterial extracorporeal membrane oxygenation support, which included extracorporeal cardiopulmonary resuscitation, at National Taiwan University Hospital between 2010 and 2021. Patients were classified as follows: underweight (body mass index