Objective: More than a decade before the introduction of intraoperative transesophageal echocardiography (TEE), epicardial echocardiography was already in use as a diagnostic imaging modality to assist cardiac surgeons and anesthesiologists with clinical decision making. Although TEE has since become increasingly more popular, epicardial echocardiography may be the most convenient intraoperative imaging technique when TEE probe placement cannot be performed or is contraindicated. The authors developed a comprehensive examination protocol for the intraoperative interrogation of cardiac structures using an epicardial/epiaortic echocardiographic approach.
Design: Retrospective analysis of patient's medical records.
Setting: Single-center academic tertiary care hospital.
Participants: Patients undergoing cardiac surgery.
Interventions: A total of 10 echocardiographic views were obtained for imaging cardiac structures, the ascending aorta, and proximal aortic arch. The described imaging planes permit the evaluation of ventricular performance, valvular function, cardiac structural abnormalities, and aortic disease.
Measurements and main results: A comprehensive epicardial/epiaortic echocardiographic examination was performed in 20 patients undergoing cardiac surgery requiring a full sternotomy. The described imaging planes were obtained in all patients in less than 8 minutes (range, 3.5-8 minutes; mean, 5.5 minutes).
Conclusion: The present manuscript delineates a protocol for performing a comprehensive, intraoperative epicardial/epiaortic echocardiographic examination. Echocardiographic imaging planes of cardiac and aortic anatomy are described. This protocol may be useful for cardiac surgeons and anesthesiologists seeking to use this technique as a cardiac imaging modality that is complementary to TEE.