Surgical Volume and Outcomes of Intraoperative Transesophageal Echocardiography in Coronary Artery Bypass Grafting

Abstract

In this cohort study of 1.26 million patients who underwent isolated CABG, intraoperative TEE was associated with survival benefits at low and medium surgical volume hospitals, particularly among patients with greater than 50% left-main coronary stenosis, 3 or more diseased vessels, or preoperative inotrope use. No survival benefit was observed at high surgical volume hospitals.These findings support a more individualized approach to TEE use during isolated CABG surgery and provide a rationale for future randomized evaluation.

Bo Zhang

Assistant Professor of Biostatistics

My research interests include design of observational studies, instrumental variables, application of causal inference in medicine and applied statistics in general.