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Ann Thorac Surg 1999;67:1631-1636
© 1999 The Society of Thoracic Surgeons

Original Articles

Radial artery in CABG: could the early results be comparable to internal mammary artery graft?

Anil Bhan, MCha,b, Vivek Gupta, MCha,b, Shiv Kumar Choudhary, MCha,b, Rajesh Sharma, MCha,b, Balbir Singh, DMa,b, Rajiv Aggarwal, DMa,b, Balram Bhargava, DMa,b, Ashutosh V. Sharma, MDa,b, Panangipalli Venugopal, MCha,b

a Departments of Cardiothoracic and Vascular Surgery, Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
b Departments of Cardiology and Cardiac Anesthesia, Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India

Accepted for publication December 8, 1998.

Address reprint requests to Dr Bhan, Department of Cardiothoracic and Vascular Surgery, Cardiothoracic Centre, All India Institute of Medical Sciences, Ansari Nagar, New Delhi - 110029, India

Background. The accidental detection of patency of radial artery grafts, by Acar, which had been labeled as blocked 18 years earlier, has led to its revival as a conduit in coronary artery bypass surgery. We used radial artery as one of the grafts in 287 patients from February 1996 to June 1998. Here we present our early clinical experience and the midterm angiographic follow up of the initial 62 patients.

Methods. A no touch, atraumatic harvesting technique coupled with gentle hydrostatic and pharmacological dilatation of the radial artery graft was employed. Radial artery was used to revascularize coronary vessels with >80% proximal stenosis. Postoperatively, the patients were administered a low dose nifedipine that was continued for 6 months thereafter. The patients were followed up clinically after discharge from the hospital and angiographic evaluation of the grafted radial artery by selective injection was done at a mean interval of 16.2 ± 5.1 months (3–24 months) postoperatively.

Results. There was no perioperative or late myocardial infarction or mortality. No significant complications related to the harvesting of radial artery were encountered. Angiographically, the radial artery grafts were found to be patent in 96.8% of patients (60/62). Mild distal anastomotic narrowing was seen in angiogram of one patient with good filling of the target vessel. Another patient showed diffuse spasm of radial artery graft. The patency of the pedicled left internal mammary grafts was also 98.2% (56/57). All the patients were asymptomatic.

Conclusions. Radial artery seems to be an excellent alternate arterial conduit for myocardial revascularization with early and midterm patency rates equivalent to that of pedicled internal mammary artery, and it should be used more often for myocardial revascularization as an adjunct to pedicled internal mammary artery graft.




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