Key Points:
Question: Is there a relationship between intra-operative nonsystolic echocardiographic parameters and outcome following coronary artery bypass (CAB) surgery?Findings: In this prospective observational study, severe dysfunction of non-systolic parameters, determined by intraoperative transesophageal echocardiography (TEE), was related in dose-response fashion to duration of postoperative hospital stay; those with abnormal parameters in non-systole(diastolic) despite normal systolic function, prior to coronary revascularization, had a 35-40% longer hospital stay than those with normal diastolic function.Meaning: Abnormal left ventricular non-systolic parameters on intra-operative TEE is an independent determinant of hospital length of stay in patients with normal systolic function undergoing coronary artery bypass (CAB) surgery.