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Objective The ideal agents for conscious sedation during ambulatory inguinal hernia repair are still unclear. We aimed to compare the analgesic, sedative, haemodynamic, and side effects of dexmedetomidine with those of propofol in combination with fentanyl for conscious sedation in patients undergoing inguinal hernia repair. Methods Eighty patients undergoing unilateral inguinal hernia repair were prospectively randomized to receive either dexmedetomidine (n = 40) or propofol (n = 40). Dexmedetomidine and propofol dosages were adjusted to maintain the targeted level of sedation. Results After administration of sedative drugs, patients who received dexmedetomidine had a significantly lower heart rate. The intraoperative requirement of fentanyl was significantly lower in patients who received dexmedetomidine compared with patients who received propofol. Administration of dexmedetomidine was associated with a reduced postoperative pain score, longer time for onset of sedation, and a slightly longer recovery time. No serious adverse events occurred in either group. The patients' overall satisfaction score was comparable between the two groups. Conclusion Dexmedetomidine is an effective adjuvant when co-administered with fentanyl for conscious sedation in patients who undergo inguinal hernia repair. Administration of dexmedetomidine decreases the requirement of fentanyl and the pain score, but slightly prolongs the time to sedation and recovery.

Comparison of dexmedetomidine and propofol for conscious sedation in inguinal hernia repair: A prospective, randomized, controlled trial