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Korean Journal of Anesthesiology ; : 312-317, 2002.
Article in Korean | WPRIM | ID: wpr-197409

ABSTRACT

BACKGROUND: A tourniquet is often used during limb surgery to minimize surgical bleeding and to keep the clear surgical field. However the tourniquet is associated with severe hemodynamic changes and tourniquet-induced hypertension. We investigated the incidences of tourniquet-induced hypertension by tourniquet duration and anesthetic methods. METHODS: One hundred thirteen patients who underwent a total knee arthroplasty were assigned into four groups according to the types of anesthesia; general anesthesia (group I, n = 30), general anesthesia and intravenous adjuvants (group II, n = 30), general and epidural anesthesia (group III, n = 22), and spinal anesthesia (group IV, n = 31). Mean arterial pressure and heart rate were recorded at ward, before induction, one minute after tourniquet inflation and every 10 minutes until 60 mininutes. The extremity was exsanguinated and a tourniquet pressure of 350 mmHg (9 cm width) was applied in all groups. RESULTS: The mean arterial pressure increased in group I and II during the tourniquet inflation period. The incidence of tourniquet-induced hypertension was higher in group I (6.7%) than other groups but there was no statistical significance among the groups. Heart rates were not changed in any groups. CONCLUSIONS: We concluded that the shorter the tourniquet time the less the occurrence of tourniquet-induced hypertension under any type of anesthesia.


Subject(s)
Humans , Anesthesia , Anesthesia, Epidural , Anesthesia, General , Anesthesia, Inhalation , Anesthesia, Spinal , Arterial Pressure , Arthroplasty , Extremities , Heart Rate , Hemodynamics , Hemorrhage , Hypertension , Incidence , Inflation, Economic , Knee , Tourniquets
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