A randomized controlled comparison of electro-acupoint stimulation or ondansetron versus placebo for the prevention of postoperative nausea and vomiting.

Anesthesia and Analgesia
Tong J GanGregory Georgiade

Abstract

In this study we evaluated the efficacy of electro-acupoint stimulation, ondansetron versus placebo for the prevention of postoperative nausea and vomiting (PONV). Patients undergoing major breast surgery under general anesthesia were randomized into active electro-acupoint stimulation (A), ondansetron 4 mg IV (O), or sham control (placement of electrodes without electro-acupoint stimulation; placebo [P]). The anesthetic regimen was standardized. The incidence of nausea, vomiting, rescue antiemetic use, pain, and patient satisfaction with management of PONV were assessed at 0, 30, 60, 90, 120 min, and at 24 h. The complete response (no nausea, vomiting, or use of rescue antiemetic) was significantly more frequent in the active treatment groups compared with placebo both at 2 h (A/O/P = 77%/64%/42%, respectively; P = 0.01) and 24 h postoperatively (A/O/P = 73%/52%/38%, respectively; P = 0.006). The need for rescue antiemetic was less in the treatment groups (A/O/P = 19%/28%/54%; P = 0.04). Specifically, the incidence and severity of nausea were significantly less in the A group compared with the other groups, and in the O group compared with the P group (A/O/P = 19%/40%/79%, respectively). The A group experienced less pain in th...Continue Reading

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