Methods
We reviewed all patients having received veno-arterial extracorporeal membrane oxygenation therapy at a tertiary referral center during the 2005-2020 period with 1-year complete follow up. Our cohort was divided in three groups according to the pH level at cannulation: pH<7 (group 1), pH 7-7.2 (group 2) and pH>7.2 (group 3). Survival was analyzed using Kaplan–Meier method. Association between pH group and survival was estimated using a Cox model.