The volume-outcome relation for pulmonary endarterectomy in chronic thrombo-embolic pulmonary hypertension.

Background: We conducted a volume-outcome (V-O) meta-analysis of PEA procedures for chronic thromboembolic pulmonary hypertension (CTEPH), to objectively determine the minimum required annual case load that can define a high-volume centre.

Methods: Three electronic databases were systematically queried until May 1st, 2024. Centres were divided in volume tertiles (Ts).