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[Systemic influence after an island flap with venous congestion-reperfusion injury]
Jing-min Cao1, Kai-hua Lu, Biao Wang
1Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
Objective:
To investigate the systemic influence after an island flap with venous congestion-reperfusion.
Methods:
An island flap was formed in a Rat model. The vein in the pedicle was clamped for 2 hours, 6 hours and 10 hours and released. The ear microcirculation, levels of TNF alpha and IL-10 were measured, and the neutrophils sequestration in tissues were counted. The vascular structure of the lung and intestine were evaluated.
Results:
There were significant changes in the ear microcirculation, neutrophils sequestration of the lung and the intestine in the 2 hours, 6 hours and 10 hours groups, and became more serious by the time increasing. The TNF alpha level reached in maximum at 1 hour after the reperfusion, while the IL-10 became to the lowest level at 3 hours after the reperfusion. However, the TNF alpha and IL-10 levels were significant high in the 6 hour and 10 hours groups, compared with the 2 hours group and the control, but there was no differences between the2 hours group and the control.
Conclusions:
Venous congestion-reperfusion of flap could injury the remote organs such as lung, intestinal etc. The injury could be more serious with the time increasing.