https://www.selleckchem.com/products/pf429242.html
This study aimed to investigate the anesthetic effect of butorphanol with different doses in patients undergoing gastroscopy and colonoscopy. 480 patients undergoing gastroscopy and colonoscopy were recruited and randomly divided into four groups to receive different doses of butorphanol (Group A = 2.5μg/kg, Group B = 5μg/kg, Group C = 7.5μg/kg and Group D = 10μg/kg). Butorphanol was administered 5min before propofol infusion. The primary outcome was the incidence of body movement. Secondary outcomes were postoperative recovery time, l
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