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Are Repeated Doses of Buprenorphine Detrimental to Postoperative Recovery after Laparotomy in Rats?

Author: Bomzon, Arieh

Source: Comparative Medicine, Volume 56, Number 2, April 2006 , pp. 114-118(5)

Publisher: American Association for Laboratory Animal Science

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Abstract:

Buprenorphine is a widely used analgesic for relief of postoperative pain in rats. The effect of repeated doses of buprenorphine throughout the postoperative pain and stress response is unknown. This investigation tested the hypotheses that (a) daily analgesic doses of buprenorphine for 7 d ameliorate the stress response after laparotomy in rats and (b) preoperative buprenorphine better ameliorates the response than do peri- and postoperative administration. Postoperative effects on body weight, daily food and water consumption, and daily fecal and urinary outputs were monitored in groups of rats treated for 7 d with analgesic doses of buprenorphine initiated at different time points relative to the time of laparotomy. Analgesic doses of buprenorphine had no effect on the study parameters in healthy unoperated rats. Daily injection of buprenorphine delayed the time at which the preoperative body weight was restored without decreasing the postoperative changes in daily food consumption, water intake, and fecal and urinary outputs in the operated rats. The effects of daily analgesic doses of buprenorphine for 7 d on body weight, daily food, and water consumption, and fecal and urinary outputs were minimal and less statistically significant than the changes caused by surgery itself. However, this dosing regimen seems to delay the restoration of body weight after abdominal surgery in rats.

Document Type: Research Article

Publication date: April 1, 2006

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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