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Ann Thorac Surg 2003;75:1171-1174
© 2003 The Society of Thoracic Surgeons
a Department of Cardiothoracic Surgery, Royal Brompton and Harefield NHS Trust, London, United Kingdom
b Cardiac Medicine, National Heart and Lung Institute, Faculty of Medicine, Imperial College, London, United Kingdom
Accepted for publication November 11, 2002.
* Address reprint requests to Professor Collins, Cardiac Medicine, National Heart and Lung Institute, Faculty of Medicine, Imperial College, Dovehouse St, London SW3 6LY, UK
e-mail: peter.collins{at}ic.ac.uk
BACKGROUND: There is little information on the effects of radial artery harvesting on postoperative forearm function and blood flow. We evaluated the early changes in forearm neural sensation, circumference, grip power, cyclical exercise fatigue, and blood flow after radial artery harvesting for coronary artery bypass graft (CABG) surgery.
METHODS: Twenty-three patients with negative Allen’s test of the nondominant forearm were recruited preoperatively and underwent assessment of bilateral forearm function (soft touch and pin-prick neural sensation, circumference, handgrip power, cyclical exercise fatigue) and blood flow measurements (forearm plethysmography). All vasoactive drugs were stopped 24 hours before assessments. Identical follow-up assessments were conducted (mean ± SEM) 3.4 ± 0.4 months postoperatively.
RESULTS: At the time of postoperative assessment all harvested forearm wounds were healed. There was no reduction of postoperative soft touch sensation but in 3 patients objective pinprick sensation was reduced in the distribution of the lateral antebrachial cutaneous nerve of the harvested forearms. Postoperative forearm circumference (p < 0.05) and grip power (p < 0.05) were significantly reduced in both forearms, however cyclical exercise fatigue was improved in both forearms. Preoperative and postoperative forearm blood flow at rest and in exercise-induced ischemic reperfusion were not significantly different in both forearms.
CONCLUSIONS: In patients with a negative Allen’s test, harvesting of the radial artery does not adversely affect subsequent forearm function or blood flow to a clinically significant degree.
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