Introduction: Minimally invasive cardiac surgery is receiving more and more attention compared to conventional cardiac surgery. However, minimally invasive cardiac surgery has disadvantages as well as potential benefits.

Objective: The aim of this study was to compare the perfusion quality ratios of conventional and minimally invasive cardiac surgery procedures performed with cardiopulmonary bypass.

Method: Coronary artery bypass graft replacement patients who underwent conventional and minimally invasive cardiac surgery with cardiopulmonary bypass were retrospectively included in this study after applying exclusion criteria. Aortic cross clamp time, total perfusion time, haematocrit, arterial oxygen, arterial carbon dioxide, arterial oxygen saturation, arterial lactate, perioperative bleeding/drainage rate and red blood cell transfusion rate were evaluated to compare perfusion quality ratios in conventional and minimally invasive cardiac surgery.

Results: A total of 64 patients were included in the study. Minimally invasive cardiac surgery was performed in 29 patients and conventional cardiac surgery in 35 patients. Demographic and preoperative data were similar in both groups (p>0.005). Aortic cross-clamping time and total perfusion time were significantly longer in the minimally invasive cardiac surgery group than in the conventional cardiac surgery group (p<0.005). Mean haematocrit, arterial oxygen, arterial carbon dioxide, arterial oxygen saturation, arterial lactate, arterial oxygen saturation, arterial lactate levels, perioperative bleeding/drainage rate and red blood cell transfusion rate measured immediately after weaning from the heart-lung machine were similar (p>0.005).

Conclusion: In the evaluation of perfusion quality ratios of conventional and minimally invasive cardiac surgery applications, it is thought that the conventional cardiopulmonary bypass method is superior in terms of aortic cross-clamp time and total perfusion time, but shows similar results in terms of other perfusion quality ratios. In addition, we think that it would be more beneficial to investigate the results of the study in a more comprehensive and larger series of patients.

Keywords: Conventional Cardiac Surgery, Minimally Invasive Cardiac Surgery, Cardiopulmonary Bypass, Perfusion Quality Rates.