Background: Our aim was to describe the technique of minimally invasive on-pump multivessel coronary revascularization through the left anterior thoracotomy, evaluate the intraoperative and early postoperative results.Methods: In this single-center retrospective cohort study we investigated the outcomes of 521 consecutive patients with isolated multivessel coronary artery disease (CAD) who were operated from July 2017 to December 2021. All operations performed via the left anterior minithoracotomy through the fourth intercostal space. Transthoracic clamp and blood cardioplegia were used for heart arrest and special maneuvers for coronary exposition. This technique was named total coronary revascularization via left anterior thoracotomy (TCRAT).
Results:The mean number of grafts was 2.97±0.7 [range, 2-5]. Left internal mammary artery (LIMA) was used in 494 (94.8%) patients, the right internal mammary artery (RIMA) in 10 (1.9%) patients, radial artery in 153 (29.4%) patients, and veins in 429 (82.3%) patients. In our series the mortality rate was 0.57% (3 cases), 2 (0.38%) conversions to sternotomy due to acute aortic dissection and no postoperative myocardial infarctions were observed. There were 2 (0.38%) postoperative strokes and 6 (1.15%) revisions for postoperative bleeding without conversion to sternotomy. The total operation time was 269±51.8 minutes, cardiopulmonary bypass time 145.7±33.5 minutes, and aortic cross-clamp time 71.9±19.9 minutes. The mean intensive care stay was 2.1±1.2 days and mean total hospital stay 5.9±2.2 days Conclusions: The TCRAT technique could be used as a routine method of coronary artery bypass grafting (CABG) and provide the possibility to fully eliminate sternotomy for almost all patients (except porcelain aorta) with isolated multivessel CAD. Special surgical maneuvers for coronary targets exposure have made TCRAT more universal in practice than other minimally invasive CABG techniques. This technique preserves principles of complete coronary revascularisation and is applicable for multivessel CABG with use of standard coronary instruments and anastomotic techniques.