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Clin. Orthop. Relat. Res. · Sep 1988
Changes in serum myoglobin levels caused by tourniquet ischemia under normothermic and hypothermic conditions.
- Y Ikemoto, H Kobayashi, M Usui, and S Ishii.
- Department of Orthopaedic Surgery, Sapporo Medical College, Japan.
- Clin. Orthop. Relat. Res. 1988 Sep 1(234):296-302.
AbstractSerum myoglobin levels have been found to be elevated for a few hours after removal of a tourniquet. In the present study, levels of serum myoglobin were measured by radioimmunoassay from local blood samples in patients who were treated with surgery of the hand in a bloodless field. After removal of the tourniquet blood samples were obtained from the antecubital vein of each patient immediately after release, five minutes, one hour, and 24 hours later. In these samples the serum myoglobin levels were not influenced by the mode of anesthesia, tourniquet time, or specific type of surgery. When the upper extremity was cooled with ice water before application of the tourniquet, however, the increase of serum myoglobin was statistically significantly inhibited when compared with the normothermic condition. Muscle injury due to tourniquet ischemia may be decreased by cooling of the upper extremity prior to tourniquet application.
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