Hemodynamic study of different angled end-to-side anastomoses

✍ Scribed by Dr. Ling Zhang; Martin Moskovitz; Sandra Piscatelli; Michael T. Longaker; John W. Siebert

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 310 KB
• Volume: 16
• Category: Article
• ISSN: 0738-1085
• DOI: 10.1002/micr.1920160214

✦ Synopsis

Abstract

This study assessed the postoperative microvascular hemodynamics in end‐to‐side arterial anastomoses of varied angles in order to determine whether the angle of the anastomosis affects arterial flow. Thirty male rats were divided into three groups of ten. Carotid to carotid end‐to‐side anastomoses were performed with anastomotic angles of 45, 90, and 135°. Postoperative flow was assessed using high frequency pulsed Doppler ultrasound (HFPDU) at 30 and 120 min postoperatively. Measurements at 30 min demonstrated significant differences in flow, with the 45° grafted vessels utilizing 56.5% of total carotid flow, and the 90° and 135° anastomoses appropriating 46.5% and 43.2% of flow, respectively (comparing 45° to both 90°, P < 0.05, and 135°, P<0.002). The change from baseline in 45° and 90° groups dissipated over a 2 hr postoperative period, but flow in the grafted vessels in the 135° group continued well below 50% at 39.9% (comparing to both 45° and 90°, P<0.001), thereby displaying a significant difference in the postoperative arterial flow of varied angled microanastomoses. © 1995 Wiley‐Liss, Inc.