The objective of this study was to perform a systematic review analyzing the total patency rates in off-pump Coronary Artery Bypass Graft (CABG) and on-pump Coronary Artery Bypass Graft. For more than thirty years, surgical coronary revascularization has been accomplished with the use of cardiopulmonary bypass (CPB) in the vast majority of cases. However, off-pump coronary artery bypass grafting (OPCAB) has enjoyed a recent resurgence in interest and popularity, worldwide. The prime aim was to compare the two procedures and find out the total patency rates in each by there angiographic outcomes along with short and long term follow-up. A total of seven Randomized control trials were included in the systematic review, and the articles were assessed and included if they fulfilled the criteria of Jadad scale and the guidelines of The Oxford Center for Evidence Based Medicine. This review has yielded independent results in favour of both the surgical procedures. Each of the two surgical procedures has proved its efficacy when subjected to patients with different clinical profile. The papers and the method of selection of patients have been critically appraised in this study. This study has reached a consensus declaring that both the procedures are equally effective when comparing the short and long term outcomes of the total patency rate. On the whole it depends on the surgeon, hospital, staff and other parameters to choose a procedure and the clinical status of the patient in order to approach a specific procedure
