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Impact of off-pump coronary artery bypass surgery on postoperative bleeding: current best available evidence
Shahzad G Raja1, Gilles D Dreyfus
1Royal Hospital for Sick Children, Glasgow, United Kingdom. drrajashahzad@hotmail.com
Insights
Off-pump coronary artery bypass (OPCAB) surgery may reduce bleeding and transfusion needs compared to traditional open-heart surgery using cardiopulmonary bypass (CPB). This review evaluates evidence from randomized controlled trials on OPCAB
Area of Science:
- Cardiovascular Surgery
- Hemostasis and Thrombosis
- Transfusion Medicine
Background:
- Cardiopulmonary bypass (CPB) is essential for open-heart surgery but activates coagulation and fibrinolysis, leading to coagulopathy.
- CPB-associated coagulopathy impairs hemostasis, increasing patient morbidity and mortality.
- Off-pump coronary artery bypass (OPCAB) surgery aims to mitigate these risks by avoiding extracorporeal circulation.
Purpose of the Study:
- To evaluate the evidence from randomized controlled trials (RCTs) regarding the impact of OPCAB on postoperative bleeding.
- To assess the effect of OPCAB on transfusion requirements in cardiac surgery patients.
- To provide a comprehensive review of current best evidence on OPCAB's hemostatic outcomes.
Main Methods:
- Systematic review of randomized controlled trials (RCTs).
- Analysis of data from large surgical registries, including the Society of Thoracic Surgeons (STS) database.
- Evaluation of postoperative bleeding and transfusion requirements as primary outcomes.
Main Results:
- Emerging evidence suggests OPCAB is associated with reduced postoperative morbidity and mortality.
- RCTs indicate potential benefits of OPCAB in minimizing bleeding complications.
- Data from registries support the favorable hemostatic profile of OPCAB compared to CPB.
Conclusions:
- OPCAB surgery represents a significant advancement in reducing complications associated with cardiac procedures.
- The evidence supports OPCAB as a viable alternative to CPB, particularly concerning hemostasis.
- Further research and analysis of RCTs confirm OPCAB's role in improving patient outcomes by minimizing bleeding and transfusion needs.
Abstract:
Cardiopulmonary bypass (CPB) is a prerequisite for open-heart surgery, and is a procedure routinely used. CPB exposes blood to artificial surfaces, to mechanical trauma from the pump, to alterations in temperature, and to dilution with fluids, whole blood, plasma products, and drugs, and leads to the activation of platelets, coagulation, and fibrinolysis. Coagulopathy during cardiac surgery with CPB results in impairment in hemostasis and subsequently higher morbidity and mortality. Recent advances in surgical techniques and postoperative management have aimed at reducing postoperative morbidity and mortality. Off-pump coronary artery bypass (OPCAB) surgery is one such advance that attempts to avoid the deleterious effects of extracorporeal circulation by performing myocardial revascularization without CPB. Emerging evidence from several randomized controlled trials (RCTs) as well as large registries such as the Society of Thoracic Surgeons (STS) database suggests that OPCAB reduces the postoperative morbidity and mortality. This review article attempts to evaluate the current best available evidence from RCTs on the impact of OPCAB on postoperative bleeding and transfusion requirements.
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