[Systemic influence after an island flap with venous congestion-reperfusion injury].
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.
Cao
Jing-min
JM
Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
Lu
Kai-hua
KH
Wang
Biao
B
Guo
Shu-zhong
SZ
D000818:Animals; D003250:Constriction; D004423:Ear / Q000098:blood supply*; D006940:Hyperemia / Q000150:complications*; D016753:Interleukin-10 / Q000032:analysis; D007422:Intestines / Q000098:blood supply*; D007958:Leukocyte Count; D008168:Lung / Q000098:blood supply*; D008833:Microcirculation; D009504:Neutrophils / Q000166:cytology; D051381:Rats; D015427:Reperfusion Injury / Q000209:etiology*; D013524:Surgical Flaps / Q000098:blood supply*; D013997:Time Factors; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis; D014680:Veins
D014409:Tumor Necrosis Factor-alpha; D016753:Interleukin-10