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THC and prochlorperazine: Reduce Nausea and Vomiting After Breast Surgery

Julie Gardener

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THC and Prochlorperazine Effective in Reducing Nausea and Vomiting in Women Following Breast Surgery​
Researchers of the University of Arkansas and the Central Arkansas Veterans Hospital System investigated the effects of 5 mg oral THC and 25 mg rectal prochlorperazine on the rate of nausea and vomiting in women following breast surgery under general anaesthesia. The rate of nausea decreased from 59 per cent to 15 per cent and the rate of vomiting from 29 per cent to 3 per cent compared to non-treated patients.

A retrospective review of 242 eligible patients, who underwent surgery between July 2001 and March 2003 was performed. 127 patients received surgery before September 2002 and did not receive a prophylaxis. 115 patients received surgery after September 2002 and were treated before surgery with oral THC (dronabinol) and rectal prochlorperazine. Data were collected from hospital records. Researchers concluded that post-operative nausea and vomiting (PONV) is a "significant problem in breast surgical patients. Preoperative treatment with dronabinol and prochlorperazine significantly reduced the number and severity of episodes of PONV."

(Source: Layeeque R, Siegel E, Kass R, Henry-Tillman RS, Colvert M, Mancino A, Klimberg VS. Prevention of nausea and vomiting following breast surgery. Am J Surg 2006;191(6):767-72)

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