Effect of surgeon experience on postoperative plasma cortisol and C-reactive protein concentrations after ovariohysterectomy in the dog: a randomised trial
Article first published online: 15 NOV 2012
© 2012 The Authors. Australian Veterinary Journal © 2012 Australian Veterinary Association
Australian Veterinary Journal
Volume 90, Issue 12, pages 474a–478, December 2012
How to Cite
Michelsen, J., Heller, J., Wills, F. and Noble, G. (2012), Effect of surgeon experience on postoperative plasma cortisol and C-reactive protein concentrations after ovariohysterectomy in the dog: a randomised trial. Australian Veterinary Journal, 90: 474a–478. doi: 10.1111/j.1751-0813.2012.01013.x
- Issue published online: 27 NOV 2012
- Article first published online: 15 NOV 2012
- Manuscript Accepted: 14 JUN 2012
- Faculty of Science, Charles Sturt University
ERRATUM: Erratum 3
Vol. 91, Issue 4, 137, Article first published online: 22 MAR 2013
- C-reactive protein;
To determine if postoperative C-reactive protein (CRP) or cortisol concentrations were significantly changed between dogs undergoing ovariohysterectomy by an experienced or inexperienced surgeon. As part of the Charles Sturt University teaching program, 45 bitches from an animal shelter were surgically sterilised between March and October 2010.
The dogs were randomly assigned to surgeons, with 37 sterilised by veterinary undergraduates and 8 by experienced surgeons. Blood samples were collected preoperatively and at 2, 4 and 6 h postoperatively. A standard midline ovariohysterectomy was performed and detailed records kept.
The median surgery time for experienced surgeons was 17 min versus 87 min for inexperienced surgeons. Anaesthesia time and blood loss were greater among the inexperienced surgeons. The CRP concentration increased significantly postoperatively for all animals (P < 0.001). Bitches sterilised by inexperienced surgeons had a significantly greater rise in CRP at 4 and 6 h post-surgery (P = 0.046). Serum cortisol concentrations were found to increase significantly over time for all animals (P < 0.001), but were not affected by surgeon experience.
The results suggest that inexperienced surgeons affect their patients differently to experienced surgeons, potentially through tissue trauma or anaesthetic duration. The lack of difference in the cortisol concentrations reflects the large number of triggers for cortisol release and, potentially, that there was little difference between the groups in terms of perceived pain in the presence of good analgesia. Serum CRP concentration may be a more sensitive measure than serum cortisol of differences in surgical trauma.