Comparison of efficacy of anesthesia with dexmedetomidine ami midazolam combined with sufentanil in patients undergoing microwave coagulation therapy for liver cancer / 中华麻醉学杂志

ABSTRACT

Objective To compare the efficacy of anesthesia with dexmedetomidinc and midazolam combined with sufentanil in patients undergoing microwave coagulation therapy for liver cancer. Methods Forty ASA Ⅱ male patients, aged 35-62 yr, weighing 45-70 kg, scheduled for percutaneous microwave coagulation therapy,were randomly divided into 2 groups ( n = 20 each) midasolam group ( group Ⅰ ) and dexmedetomidine group ( group Ⅱ ). A loading dose of midazolam 40 μg/kg ( in normal saline 20 ml) was given intravenously over 10 min,followed by midasolam infusion at 40 μg·kg-1 ·h-1 in group Ⅰ . A loading dose of dexmedetomidine 1 μg/kg (in normal saline 20 ml ) was given intravenously over 10 min, followed by dexmedetomidine infusion at 0.5 loading dose of sufentanil 0.2 μg/kg was given, and then patient-controlled intravenous anesthesia with sufentsnil (background infusion 0.1 μg·kg-1 ·h-1 , bolus dose 0.1 μg/kg, lockout interval 3 min) was used. The operation was started 2 min after administration of the loading dose of sufentanil. Bradycardia, tachycardia, hypotension, hypertensinn and respiratory depression were recorded. The number of attempts and successfully delivered doses was also recorded. Results There was no significant difference in the incidence of bradycardia, tachycardia, hypotension and hypertension between the two groups ( P ＞ 0 .05). The incidence of respiratory depression was significantly lower, and the number of attempts and successfully delivered doses was smaller in group Ⅱ than in group Ⅰ ( P ＜ 0.05). Conclusion The efficacy of anesthesia with dexmedetomidine and sufentanil is better than that of anesthesia with midazolam and sufentanil in patients undergoing microwave coagulation therapy for liver cancer.