Hemodynamic comparison of microsurgical closures for longitudinal arteriotomies.
Twenty-four femoral arteries in 12 rats were used to compare longitudinal and transverse closures in blood vessels approximately 1 mm in diameter. The closure techniques were applied to a simple longitudinal slit, 1 mm long, and to a longitudinal defect, 0.5 mm wide and 1 mm long. Comparisons were made of the change in pre- and postrepair flow velocities, recorded every 5 min using a 20-MHz pulsed Doppler velocimeter. Maximum reductions in flow velocity (linearly related to volume flow) were 10% and 29% for the longitudinal and transverse repairs, respectively, when applied to the longitudinal slit, and 65% and 19%, respectively, when applied to the larger arteriotomy. An analysis of variance indicates that the differences in the normalization of flow velocities during the immediate postrepair period are significant (P < 0.05). We conclude that optimal flow normalization is achieved by applying the longitudinal repair to the simple slit and the transverse repair to the larger arteriotomy.
Cipoletti
R D
RD
Department of Orthopaedics and Rehabilitation, University of New Mexico Medical Center, Albuquerque 87131.
Moneim
M S
MS
Greene
E R
ER
D000818:Animals; D001783:Blood Flow Velocity / Q000502:physiology; D005263:Femoral Artery / Q000503:physiopathology / Q000601:surgery*; D006439:Hemodynamics; D008297:Male; D008866:Microsurgery / Q000379:methods*; D011673:Pulsatile Flow; D051381:Rats; D017207:Rats, Sprague-Dawley; D012039:Regional Blood Flow / Q000502:physiology; D012212:Rheology; D014463:Ultrasonography