Prognostic impact of oxygen saturation during the 6-minute walk test in pulmonary arterial hypertension

Introduction: The 6-minute walk distance (6MWD) is an important clinical endpoint in pulmonary arterial hypertension (PAH). Objective: To study the incremental prognostic value of oxygen saturation (SO2) changes during a walk test in PAH. Methods: Baseline and final SO2 (ΔSO2) data, as well as 6MWD from the walk test at the time of diagnosis of 115 incident PAH patients were collected. Cox proportional hazards models were...