ABSTRACT
Objective To investigate the effect of dexmedetomidine combined with sufentanil on postoper-ative analgesia in patients undergoing thoracoscopic lobectomy. Methods Sixty patients undergoing thoracoscopic lobectomy were randomly divided into the dexmedetomidine group(DS group)and the control group(S group). The two groups were treated with PCIA.The Group DS:dexmedetomidine 2 μg/kg+sufentanil 1.5 μg/kg+ondan-setron 8 mg;and the group S:sufentanil 2 μg/kg+ondansetron 8 mg,in which all drugs were dissolved in 100 mL 0.9 normal saline. Parameters:loading dose 2 mL;infusion speed 2 mL/h;PCA dosage 2 mL each time;lock time:15 min. The mean arterial pressure(MAP),heart rate(HR),resting(VASR)and cough(VASC)VAS score,and Ramsay sedation score were recorded at 2,6,12,24,36 and 48 h after surgery.The number of press analgesic pump,the amount of sufentanil used,the incidence of adverse reactions such as,the nausea and vomit-ing,respiratory depression,bradycardia and so on were recorded within 48 h after operation. Results Compared with the group S,the MAP and HR of patients in the group DS decreased significantly at each time(P < 0.05), the scores of VASR and VASC decreased obviously at 6,12,24 h after surgery(P<0.05),the number of press analgesic pump,the amount of sufentanil used,the incidence of nausea and vomiting decreased obviously within 48 h after operation(P<0.05).Conclusions Dexmedetomidine combined sufentanil administration in PCIA after thoracoscopic lobectomy can obtain satisfactory analgesic effect and more stable hemodynamics,and reduce the dosage of sufentanil,the incidence of nausea and vomiting.