Transesophageal Echocardiography in Patients Undergoing Coronary Artery Bypass Graft Surgery

Area of Science:

• Cardiovascular Surgery
• Anesthesiology
• Medical Imaging

Background:

• The clinical impact of intraoperative transesophageal echocardiography (TEE) during isolated coronary artery bypass grafting (CABG) on decision-making and patient outcomes remains unclear.
• Understanding TEE's role is crucial for optimizing surgical strategies and improving patient safety in CABG procedures.

Purpose of the Study:

• To investigate the association between intraoperative TEE utilization and post-CABG mortality.
• To determine if TEE use influences changes in the planned operative approach, specifically unplanned valve surgery.

Main Methods:

• A retrospective cohort study analyzed data from the Society of Thoracic Surgeons Adult Cardiac Surgery Database (2011-2019).
• The study included patients undergoing planned isolated CABG, comparing outcomes between those who received intraoperative TEE and those who did not.
• Primary outcomes included operative mortality and the incidence of unplanned valve procedures.

Main Results:

• Over 1.2 million isolated CABG procedures were reviewed, with 53.9% utilizing intraoperative TEE.
• Patients undergoing TEE had significantly lower odds of operative mortality (aOR 0.95, p=0.025), with a notable benefit in higher-risk patient groups.
• TEE use was strongly associated with an increased likelihood of undergoing an unplanned valve procedure (aOR 4.98, p<0.0001).

Conclusions:

• Intraoperative TEE during isolated CABG is associated with reduced operative mortality, particularly in high-risk individuals.
• TEE facilitates intraoperative decision-making, leading to a higher rate of unplanned valve procedures when indicated.
• The findings support the judicious use of TEE to enhance outcomes in isolated CABG, especially for complex or high-risk cases.