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  • Title: Propofol alone versus propofol in combination with meperidine for sedation during colonoscopy.
    Author: Hsieh YH, Chou AL, Lai YY, Chen BS, Sia SL, Chen IC, Chang YL, Lin HJ.
    Journal: J Clin Gastroenterol; 2009 Sep; 43(8):753-7. PubMed ID: 19169146.
    Abstract:
    BACKGROUND: Despite the increasing popularity of propofol for sedation in colonoscopy, the optimal regimen is still controversial. Both propofol alone and propofol in combination with meperidine are frequently used during colonoscopy, but the impact of adding meperidine has not been evaluated. This study aimed to investigate if adding meperidine to propofol offers any advantage in terms of patient tolerance, recovery time, and postcolonoscopy discomforts. METHOD: Consecutive patients admitted to the physical checkup department of our hospital were randomized to receive either meperidine plus propofol (combination group, n=100) or propofol alone (propofol group, n=100) for sedated colonoscopy. The patients' tolerance and postcolonoscopy discomforts (pain, bloating, dizziness, and nausea/vomiting) were assessed with a 0-10 visual analog scale. The recovery times were assessed with 5-minute and 10-minute Aldrete scores. RESULTS: The dose of propofol was less in the combination group than the propofol group (129.80+/-37.93 mg vs. 147.90+/-47.85, mean+/-SD, P=0.003). The endoscopists, anesthetists, and nurses all rated patients' tolerance in favor of the combination group than the propofol group (mean+/-SD, endoscopists, 9.17+/-1.23 vs. 8.49+/-1.60, P=0.001; anesthetists, 9.21+/-1.08 vs. 8.63+/-1.37, P=0.001; nurses, 9.18+/-1.34 vs. 8.71+/-1.47, P=0.019, respectively). Patients in the combination group recovered earlier than the placebo group (5-min Aldrete scores: 9.48+/-1.09 vs. 9.05+/-1.32, mean+/-SD, P=0.013; short intervals to speak: 4.29+/-4.05 min vs. 6.30+/-5.22 min, P=0.003; and departure: 18.62+/-5.28 min vs. 20.28+/-5.68 min, P=0.034). There was also less abdominal bloating in the combination group after colonoscopy (1.23+/-1.79 vs. 2.19+/-2.12, mean+/-SD, P=0.004). Incidences of hypoxemia, hypotension, and overall satisfaction scores were comparable between the 2 groups. CONCLUSIONS: For sedated colonoscopy, propofol in combination with meperidine is better than propofol alone in improving patients' tolerance and recovery.
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