Flap viability in relation to venous outflow

Flap viability in relation to venous outflow Although there are indications that flap viability depends on venous outflow, only few publications deal with this subject. The studies that have been published refer only to macroscopic flap necrosis. We investigated various venous situations following free tissue transfer under baseline conditions and after moderate (1 h) and severe (8 h) secondary arterial ischemia. The flaps investigated were from the abdomen of male Sprague-Dawley rats ( n =90). Venous outflow and the underlying flap metabolism were measured (lactate, pH, pO 2 , pCO 2 ). Although there was no significant difference in flap viability (survival area/original area) macroscopically, significant changes in venous outflow, lactate, and pH were found depending on modifications of the venous system. It can be concluded that free flap microcirculation is affected to a high degree by variations in venous outflow. The optimal venous drainage for different flaps needs further study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Plastic Surgery Springer Journals

Flap viability in relation to venous outflow

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Publisher
Springer-Verlag
Copyright
Copyright © 2003 by Springer-Verlag
Subject
Medicine
ISSN
0930-343X
eISSN
1435-0130
D.O.I.
10.1007/s00238-002-0452-y
Publisher site
See Article on Publisher Site

Abstract

Although there are indications that flap viability depends on venous outflow, only few publications deal with this subject. The studies that have been published refer only to macroscopic flap necrosis. We investigated various venous situations following free tissue transfer under baseline conditions and after moderate (1 h) and severe (8 h) secondary arterial ischemia. The flaps investigated were from the abdomen of male Sprague-Dawley rats ( n =90). Venous outflow and the underlying flap metabolism were measured (lactate, pH, pO 2 , pCO 2 ). Although there was no significant difference in flap viability (survival area/original area) macroscopically, significant changes in venous outflow, lactate, and pH were found depending on modifications of the venous system. It can be concluded that free flap microcirculation is affected to a high degree by variations in venous outflow. The optimal venous drainage for different flaps needs further study.

Journal

European Journal of Plastic SurgerySpringer Journals

Published: Feb 1, 2003

References

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