Yaorui Sun, Shujiao Liu, Wenli Si, Quanyi Zhang, Fei Yu, Ming Su, Chao Sun
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The effective dose of butorphanol tartrate in patients of different ages undergoing painless gastroscopy.
Objective: This study evaluated the 50% effective dose (ED50) and 95% effective dose (ED95) of butorphanol tartrate in patients undergoing painless gastroscopy.
Methods: Patients who underwent painless gastroscopy at Binzhou Medical University Hospital were divided into the youth, middle-aged, and older groups. The ED50 and ED95 required for successful sedation using butorphanol tartrate were measured using the Dixon up-and-down method in patients in the different age groups. Patients in each group were administered intravenous butorphanol 5 minutes before gastroscopy. Each patient was administered 2 mg/kg propofol. The ED50 and ED95 of butorphanol were calculated using probit analysis.
Results: In total, 95 patients were included. The ED50s of butorphanol in the youth, middle-aged, and older groups were 7.384, 6.657, and 6.364 μg/kg, respectively. The ED95s of butorphanol doses in these groups were 9.108, 8.419, and 7.348 μg/kg, respectively.
Conclusions: The ED50 and ED95 varied among the age groups, indicating that the effective dose decreases with age.
期刊介绍：
_Journal of International Medical Research_ is a leading international journal for rapid publication of original medical, pre-clinical and clinical research, reviews, preliminary and pilot studies on a page charge basis.
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Print ISSN: 0300-0605
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