RESULTS	Cumulative morphine consumption 2 , 4 , 8 , and 24 h postoperatively was 6 + / - 4.8 , 14 + / - 6.6 , 22 + / - 9.6 , and 42 + / - 15.7 mg in the morphine and 8 + / - 5.1 , 18 + / - 7.7 , 28 + / - 9.4 , and 43 + / - 17.4 mg in the control group ( F = 2.70 , DF = 1 , and P = 0.105 for intergroup comparisons ) .\