This study used a single-center, single-arm, pharmacokinetic ( PK ) study design. Thirty subjects who met the inclusion criteria were stratified according to age, including 15 in each age group of 65-74 years old and ≥ 75 years old. The patients were treated with a unified anesthesia method during abdominal endoscopic surgery. Anrecofin injection 1.0 μg / kg was injected for the first time within 15 min, and then once again at 8 h and 16 h. And received 6 pain assessments, 1 satisfaction score and 1 telephone follow-up. In this study, 10 blood samples were collected and analyzed.
Age range
65 Years
Sex
ALL
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Blood concentration
Timeframe: The blood collection time points were Minute 0, Minute 2, Minute 5, Minute 10, Minute 30, Hour 1, Hour 2, Hour 4, Hour 8, Hour 12 after the 3rd intravenous injection.