The use of an ilioinguinal-hypogastric nerve block (IHNB) as part of a monitored anesthesia care (MAC) technique has been associated with a rapid recovery profile for outpatients undergoing inguinal herniorrhaphy procedures. This study was designed to compare the cost-effectiveness of an IHNB-MAC technique with standardized general and spinal anesthetics techniques for inguinal herniorrhaphy in the ambulatory setting. We randomly assigned 81 consenting outpatients to receive IHNB-MAC, general anesthesia, or spinal anesthesia. We evaluated recovery times, 24-h postoperative side effects and associated incremental costs. Compared with general and spinal anesthesia, patients receiving IHNB-MAC had the shortest time-to-home readiness (133+/-68 min vs. 171+/-40 and 280+/-83 min), lowest pain score at discharge (15+/-14 mm vs. 39+/-28 and 34+/-32 mm), and highest satisfaction at 24-h follow-up (75% vs. 36% and 64%). The total anesthetic costs were also the least in the IHNB-MAC group ($132.73+/-33.80 vs. $172.67+/-29.82 and $164.97+/-31.03). We concluded that IHNB-MAC is the most cost-effective anesthetic technique for outpatients undergoing unilateral inguinal herniorrhaphy with respect to speed of recovery, patient comfort, and associated incremental costs.

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