Assessment of Internal Thoracic Artery Patency With Transesophageal Echocardiography During Coronary Artery Bypass Graft Surgery

stenosis and 1.14 0.10 (range, 0.58-3.87) in its absence (p 0.0289), whereas mean velocity ratios were 0.62 0.05 (range, 0.45-0.72) and 1.27 0.10 (range, 0.66-4.08) (p 0.0223), respectively, and velocity time integral ratios were 0.83 0.09 (range, 0.64-1.05) and 2.69 0.29 (range, 0.918.35) (p 0.0224), respectively. The critical values for peak and mean velocities and velocity time integral ratios were 0.60, 0.73, and 1.06, respectively, whereas the sensitivity for each was 100% and the specificity was 92%, 94%, and 89%, respectively. Conclusions: The authors concluded that the intraoperative assessment of LITA patency with TEE was a markedly useful and powerful tool for anesthesiologists during CABG surgery.