Coronary artery bypass surgery: beating heart or cardiopulmonary bypass?

Area of Science:

• Cardiovascular Surgery
• Cardiac Surgery Outcomes

Background:

• Conventional coronary artery bypass surgery utilizes cardiopulmonary bypass.
• Beating heart surgery offers an alternative approach to coronary revascularization.

Purpose of the Study:

• To compare the early results of beating heart coronary bypass surgery (without cardiopulmonary bypass) versus conventional coronary bypass surgery (with cardiopulmonary bypass).
• To evaluate patient outcomes, including complications and resource utilization.

Main Methods:

• Retrospective study of 1094 patients undergoing isolated coronary artery bypass surgery from January 2009 to December 2011.
• Comparison between 73 patients in the beating heart group (Group 1) and 1021 patients in the conventional cardiopulmonary bypass group (Group 2).
• Analysis of demographic data, comorbidities, postoperative complications, and resource utilization.

Main Results:

• No significant differences in age, gender, or comorbidities (diabetes mellitus, COPD, hypertension) between groups.
• Lower need for inotropic support (P=0.002) and reduced mediastinal drainage (P<0.001) in the beating heart group.
• Similar rates of postoperative atrial fibrillation, need for intra-aortic balloon pump, re-operation for bleeding, hospital stay, ICU stay, cerebrovascular accident, renal failure, and sternal wound infection. No mortality in the beating heart group versus 1.8% in the conventional group.

Conclusions:

• Beating heart coronary artery bypass surgery is associated with a decreased requirement for inotropic support and blood transfusion.
• The technique demonstrates comparable safety and efficacy to conventional cardiopulmonary bypass surgery regarding major postoperative complications and mortality.
• Beating heart surgery presents a viable alternative for coronary revascularization with potential benefits in resource utilization.