Background/Aims
The usage of sedative agents like midazolam or propofol and a desire for efficient and safe endoscopy have contributed to changes in the practice of endoscopic sedation. The clinical efficacy and safety of propofol as premedication for outpatient colonoscopy is under evaluation in Korea. We compared propofol to low-dose midazolam for colonoscopy with conscious sedation. Methods: Outpatients undergoing colonoscopy were randomized to receive either propofol or low-dose midazolam (0.05 mg/kg). Total 92 patients were divided into 2 groups (propofol group: 51, low-dose midazolam group: 41). Induction of sedation, procedure and recovery time, patient's and doctor's satisfaction, complications were evaluated. Results: There was no significant difference between two groups in sex ratio and mean age. The changes in blood pressure, pulse rate, respiration rate and oxygen saturation were not significant in both groups. Patients receiving propofol tolerated colonoscopy much more than those with low-dose midazolam. Major complications such as hemodynamic instability or apnea did not occur in both groups. Conclusions: Propofol was safe and effective premedication for conscious sedation in colonoscopy. Propofol has several advantages over low-dose midazolam. (Intest Res 2005;3:11-17)