Hemodynamic comparison of microsurgical repairs for large arterial defects.
Twenty-eight femoral arteries in 14 rats were used to compare transverse closures and end-to-end anastomoses in blood vessels approximately 1 mm in diameter. The transverse closures were applied to arteriectomies created by excising one-half the circumference of the vessel over a length of 1 mm. The end-to-end anastomoses were performed after resecting a 1-mm segment. Recordings were made of pre- and postrepair flow velocity and three-point diameter measurements every 5 minutes using a 20-MHz pulsed Doppler velocimeter and digimatic caliper. Maximum reductions in flow velocity were 18% and 31% for the transverse repair and end-to-end anastomosis, respectively. Otherwise, intergroup comparisons of the postrepair normalization of both flow velocity and vessel diameter showed few significant differences (P < 0.05). We conclude that arterial defects involving no more than half the diameter of the vessel can be effectively repaired in significantly less time using the transverse closure.
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
D000714:Anastomosis, Surgical; D000818:Animals; D001783:Blood Flow Velocity; D005263:Femoral Artery / Q000473:pathology / Q000503:physiopathology* / Q000601:surgery*; D006439:Hemodynamics; D008297:Male; D008866:Microsurgery; D051381:Rats; D017207:Rats, Sprague-Dawley