Summary
Minimally invasive operations such as laparoscopic cholecystectomy appear to result in more rapid recovery of normal function, less physiological disturbance, and presumably less stress to the organism than open operation counterparts. The purpose of this study was to determine the stress response associated with minimally invasive surgery compared to conventional laparotomy.
Three groups of pigs underwent general endotracheal anesthesia. The first group had laparoscoic cholecystectomy, the second open cholecystectomy, and the last group (controls) had only general anesthesia. The neuroendocrine serum stress markers adrenocorticotropic hormone (ACTH), cortisol, insulin, and glucagon were measured prior to anesthesia and for the first 3 postoperative days.
Analysis of the data showed significant elevations of both ACTH and cortisol for laparoscopic operations as well as for open operation (cortisol only) in the immediate postoperative period. No differences were found for the other serum stress markers.
We conclude that minimally invasive surgery in this porcine model confers no advantage, as measured by four neuroendocrine stress hormones, over conventional surgery. Further study is required to determine the clinical implication of these findings.
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Mansour, M.A., Stiegmann, G.V., Yamamoto, M. et al. Neuroendocrine stress response after minimally invasive surgery in pigs. Surg Endosc 6, 294–297 (1992). https://doi.org/10.1007/BF02498863
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DOI: https://doi.org/10.1007/BF02498863