Tourniquet-induced hypertension.
The anaesthetic records of 600 patients undergoing lower limb surgery were reviewed to determine the frequency of intraoperative arterial hypertension (defined as a 30% incision). The overall frequency of hypertension during operation in 500 patients to whom a tourniquet was applied during surgery was 11%. The probability of hypertension was increased if the patient was elderly, had cardiac enlargement shown by x-ray or e.c.g., or had nitrous oxide and narcotic anaesthesia. Pre-existing hypertension, increased serum creatinine concentration, anaemia, or treatment with antihypertensives, diuretics, or steroids were not strongly associated with intraoperative hypertension. A control group of 100 patients undergoing hip surgery without application of a tourniquet exhibited hypertension in 1% of cases.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000758:Anesthesia / Q000379:methods; D001794:Blood Pressure; D006332:Cardiomegaly / Q000150:complications; D002648:Child; D006622:Hip Prosthesis; D006801:Humans; D006973:Hypertension / Q000209:etiology*; D007431:Intraoperative Complications / Q000209:etiology; D007866:Leg / Q000601:surgery; D008875:Middle Aged; D011336:Probability; D014111:Tourniquets / Q000009:adverse effects*