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Routine use of the radial artery for coronary artery revascularization
Zile Singh Meharwal1, Naresh Trehan
1Department of Cardiovascular Surgery, Escorts Heart Institute and Research Centre, New Delhi, India. meharval@hotmail.com
Insights
The radial artery is a safe and effective conduit for myocardial revascularization, demonstrating low complication rates and high graft patency. This study highlights its utility in cardiac surgery for improving patient outcomes.
Area of Science:
- Cardiovascular Surgery
- Vascular Grafting
Background:
- The radial artery has emerged as a viable alternative conduit for myocardial revascularization.
- Assessing its long-term efficacy and safety is crucial for surgical decision-making.
Purpose of the Study:
- To evaluate the safety and efficacy of using the radial artery as a conduit in myocardial revascularization.
- To assess graft patency rates and complication incidence associated with radial artery use.
Main Methods:
- Retrospective analysis of 4,000 patients undergoing myocardial revascularization between January 1997 and December 2000.
- Inclusion of radial artery as a conduit for distal anastomoses.
- Assessment of clinical outcomes, complications, and graft patency via postoperative angiography.
Main Results:
- Low hospital mortality (0.8%) and minimal hand ischemia (0%).
- High graft patency rates at 18 months: radial artery (92.4%), internal mammary artery (96.2%), and saphenous vein (76.2%).
- Low incidence of local hand wound complications (0.7%).
Conclusions:
- The radial artery is a safe and effective conduit for myocardial revascularization with excellent long-term patency.
- Its use is associated with low morbidity and comparable or superior patency to other commonly used grafts.
Abstract:
Between January 1997 and December 2000, a total of 4,000 patients underwent myocardial revascularization using the radial artery as one of the conduits. The mean age of the patients was 54 +/- 7 years, and 92.8% of them were male. Of these patients, 31% had a left ventricular ejection fraction below 40% and 22.8% underwent urgent operation. A total of 4,225 distal anastomoses were performed using the radial artery. The average number of grafts was 3.3 +/- 0.5. The hospital mortality rate was 0.8%. Low cardiac output, inotropic support, perioperative myocardial infarction, reoperation for bleeding, atrial fibrillation, and sternal infection occurred in 1.8%, 2.8%, 1.2%, 1.2%, 16.8%, and 1.2% of the patients, respectively. None of the patients had major ischemia of the hand. The incidence of local hand wound complications was 0.7% (wound infection, 0.4%; wound dehiscence without infection, 0.1%; and hematoma, 0.2%). The average length of stay in the intensive care unit was 20 +/- 7 hours and in the hospital was 6 +/- 2 days. Postoperative angiography, performed in 106 patients at a mean interval of 18 months, showed that 92.4% of radial artery, 96.2% of internal mammary artery, and 76.2% of saphenous vein grafts were patent.
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