Document Type : Original Article(s)
Authors
1
Professor of Anesthesiology, Department of Anesthesiology, Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
2
Assistant Professor of Anesthesiology, Department of Anesthesiology, Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
3
Associate Professor of Anesthesiology, Department of Anesthesiology, Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
4
Medical Student, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Abstract
Background: To perform colonoscopy as a diagnostic and therapeutic method, short-term, appropriate, and sufficient sedation is needed. Conscious sedation is a state that allows the patient to tolerate an invasive procedure while maintaining cardiac and respiratory function. This study aimed to compare the sedative effect of ketamine with propofol in patients undergoing colonoscopy.
Methods: The present study was conducted as a clinical trial on patients referred to the colonoscopy department of Imam Khomeini Hospital in Ahvaz, and the patients were divided into two groups. For one group, intravenous lidocaine 2% 1.5 mg/kg, fentanyl 1 µg/kg, and ketamine 0.5 mg/kg were prescribed, and for the other group, intravenous lidocaine 2% 1.5 mg/kg, fentanyl 1 µg/kg, and propofol 0.5 mg/kg were prescribed. Then, hemodynamic changes, degree of sedation, and pain score were checked for both groups.
Findings: There was no significant difference between age, gender, and weight in the two groups (P > 0.05). Mean arterial blood pressure, pain, and recovery time decreased in both groups, and sedation improved, but no significant difference was observed between these variables. In the ketamine group, the percentage of arterial blood oxygen saturation and pain after sedation decreased in all minutes compared to before, but no substantial difference was observed (P > 0.05). In the propofol group, there was a significant difference between the heart rate before and after sedation in all minutes (P < 0.05).
Conclusion: Both methods are associated with minimal hemodynamic changes, sedation, and adequate analgesia and can be used for effective sedation in patients.
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