Abstract
Resting membrane potential (RMP) and indexes of accommodation (IA) were obtained from the brachioradialis muscle in rats subjected to 2 or 5 h of bilateral hindlimb tourniquet. The results showed a highly significant increase in muscular IA with a return to the control values for the rats with 2 h of tourniquet, while the increased in the IA is maintained all the survival period in the rats with 5 h of tourniquet. The velocity of increasing of the IA bears a direct relationship to the outcome of the injury. A decrease in the RMP of the brachioradialis muscle and an increase in the extracellular K+ and H+ was also observed. The early differences in the behavior of the accommodation parameter allowed a clear differentiation of the rats which survived the tourniquet shock from those who finally died.
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