Annals of plastic surgery
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Annals of plastic surgery · Apr 1998
Comparative StudyIschemic preconditioning of musculocutaneous flaps: effects of ischemia cycle length and number of cycles.
Previous work in our laboratory has indicated that ischemic preconditioning improves musculocutaneous flap survival 2.5 times that of the control flap area when the flaps are subsequently subjected to 4 hours of global ischemia. The preconditioning protocol used in this study was arbitrarily designed to be 10 minutes of pedicle clamping followed by 10 minutes of reperfusion. This sequence was repeated for three cycles with a total preconditioning time of 1 hour. ⋯ Ischemic preconditioning with 10-minute cycles is superior to 5-minute cycles. Three cycles of 10-minute preconditioning is statistically superior to one or two cycles. Future studies are planned to study four or more cycles and longer cycle times.