Effect of single compared to repeated doses of intravenous S(+) ketamine on the release of pro-inflammatory cytokines in patients undergoing radical prostatectomy

Radical prostatectomy is a major surgical procedure that is associated with marked inflammatory response and impairment of the immune system which may affect the postoperative outcome. The aim of this study was to evaluate the effect of preincision single or multiple doses of S(+) ketamine on the pro-inflammatory cytokines, namely tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6).