This study was supported by the Minimally Invasive Surgery Grant from the American College of Veterinary Surgeons and Ethicon Endo-Surgery, and by the State of Indiana and the Purdue University School of Veterinary Medicine Research account funded by the total wager tax.
Original Article - Clinical
Comparison of Transvaginal Natural Orifice Transluminal Endoscopic Surgery (NOTES®) and Laparoscopy for Elective Bilateral Ovariectomy in Standing Mares
Article first published online: 23 SEP 2011
© Copyright 2011 by The American College of Veterinary Surgeons
Volume 40, Issue 8, pages 998–1008, December 2011
How to Cite
Pader, K., Freeman, L. J., Constable, P. D., Wu, C. C., Snyder, P. W. and Lescun, T. B. (2011), Comparison of Transvaginal Natural Orifice Transluminal Endoscopic Surgery (NOTES®) and Laparoscopy for Elective Bilateral Ovariectomy in Standing Mares. Veterinary Surgery, 40: 998–1008. doi: 10.1111/j.1532-950X.2011.00877.x
- Issue published online: 2 DEC 2011
- Article first published online: 23 SEP 2011
- Manuscript Accepted: JUL 2011
- Manuscript Received: DEC 2010
- American College of Veterinary Surgeons
- Ethicon Endo-Surgery
- Purdue University School of Veterinary Medicine Research
To compare surgical trauma, perioperative pain, surgical time, and complication rate in mares undergoing standing bilateral ovariectomy by natural orifice transluminal endoscopic surgery (NOTES) or laparoscopy.
Healthy mares (n = 12).
Ovariectomy was performed with a vessel-sealing device by transvaginal NOTES (n = 6) using a flexible endoscope and specialized instruments or by bilateral flank laparoscopy (n = 6). Preoperative and postoperative complete blood count (CBC), plasma fibrinogen concentration, serum amyloid A concentration, peritoneal nucleated cell count, and total protein concentration were compared using repeated measures ANOVA. Surgical times were compared using an unpaired t-test. Mares were monitored for 2 weeks postoperatively and necropsy was performed at 3 weeks (n = 6) or 3 months (n = 6) to assess short- and medium-term effects of each procedure. Complication rate, necropsy, and bacteriology findings were compared using a Fishers exact test. Significance was set at P < .05.
All surgical procedures were performed successfully and all but one laparoscopy mare were bright, alert, and maintained a good appetite until euthanasia. Mean ± SD surgical time was similar between groups (NOTES: 100 ± 40 minutes; laparoscopy: 107 ± 47 minutes). There were no significant temporal differences in vital parameters, CBC, plasma fibrinogen concentration, serum amyloid A concentration, peritoneal nucleated cell count, and total protein concentration between groups.
Bilateral ovariectomy by transvaginal NOTES or laparoscopy resulted in minimal inflammation and surgical trauma.