Results
Of the 191 patients, 106 (55.4%) were male and 75 (44.6%) were female and the average age was 66±5.8 (Table 1). Of the 30 patients having IMLAD image on CAG, 8 were observed to have an epicardial LAD and 22 had an intramyocardial course. Of the 25 patients being observed to have IMLAD intraoperatively, 3 had a normal preoperative CAG imaging. (Figure 1) In CAG group, of the 30 patients, 20 (66.7%) were male and 10 (33.3%) were female and average age was 64±6.2. In CABG group, of the 25 patients, 15 (60%) were male and 10 (40%) were female, and the average age was 63±4.9.
The prevalence of the intramyocardial LAD in patients undergoing CABG was 13%. Sensitivity of CAG was measured as 88% and specificity of CAG was 95.1%.
Of the 25 IMLAD cases, 20 (80%) had a superficial course and five (20%) had a deeper course through the interventricular septum. In 20 cases, including the two deeply located IMLAD, LAD was grafted distally where it became visible. In five cases, LAD was not visible even in distal part. Great cardiac vein was used as a leading mark in order to visualize IMLAD and LAD was grafted within the myocardium. No intra/postoperative complication was observed in any of the IMLAD cases.