Laparoscopic-assisted implantation of a urinary catheter in male sheep

Abstract

OBJECTIVE-To evaluate a laparoscopic technique for implantation of a urinary catheter in the right paramedian area in male sheep and to determine feasibility, benefits, and risks for this technique. DESIGN-Evaluation study. ANIMALS-6 Healthy male sheep (mean +/- SD body weight, 42.16 +/- 11.95 kg [92.75 +/- 26.29 lb]). PROCEDURES-Each sheep was anesthetized and positioned in dorsal recumbency. A 10-mm laparoscope was inserted in the right paramedian area between the xiphoid and preputial orifice. After creation of capnoperitoneum, grasping forceps were inserted in the left paramedian area at the level of the teats and used to immobilize the urinary bladder. A pigtail balloon catheter was implanted transcutaneously in the right paramedian area between the preputial orifice and teats and directed into the urinary bladder by use of laparoscopic guidance. The catheter was removed 10 days after implantation. Fourteen days after initial surgery, a second laparoscopy was performed to evaluate pathologic changes. RESULTS-Inadvertent insertion of the first trocar into the rumen of 1 sheep was the only intraoperative complication encountered. Laparoscopic-assisted implantation of the urinary catheter was successfully performed in all sheep. No postoperative complications were detected. CONCLUSIONS AND CLINICAL RELEVANCE-Laparoscopic-assisted implantation of a urinary catheter in the right paramedian area was successfully performed and may be a feasible method for use in sheep. This method can be considered as an alternative to tube cystotomy performed by laparotomy.

Single layer cystotomy closure of excised porcine bladders with barbed versus smooth suture material

“…Although this study found no advantage to the use of use of barbed suture, this approach may be more advantageous to reduce the duration of laparoscopic procedures. Laparoscopic closure of a cystotomy has been described after urolith removal, mass excision, and placement of a percutaneous urinary catheter in large animals . The technical challenge associated with intracoporeal knot tying is compounded by a confined working space with limited visualization, increasing the duration of laparoscopic procedures .…”

“…Laparoscopic closure of a cystotomy has been described after urolith removal, mass excision, and placement of a percutaneous urinary catheter in large animals. [24][25][26] The technical challenge associated with intracoporeal knot tying is compounded by a confined working space with limited visualization, increasing the duration of laparoscopic procedures. 3 Even in the hands of skilled surgeons, failure rates of knots tied laparoscopically approach 50%, due to slipping or unraveling.…”

Minimally invasive surgical tube cystotomy for treating obstructive urolithiasis in small ruminants with an intact urinary bladder

“…Laparoscopyassisted tube implantation into the urinary bladder of clinically normal sheep has recently been attempted; in that study, inadvertent insertion of the trocar into the rumen of one sheep was an intraoperative complication encountered (Franz and others 2008). Lithotripsy to dissolve uroliths in ruminants also has potential as a viable option (Ewoldt and others 2008).…”

A 3-portal laparoscopic ovariectomy technique in ewes

“…Laparoscopy has been successfully performed in small ruminants for a variety of applications including intrauterine artificial insemination (Gourley and Riese, 1990), ovum collection (Graff et al, 1999;Baldassarre et al, 2002), nephrectomy (Sanchez-Margallo et al, 2012), cystotomy (Franz et al, 2008), and ovariectomy (Teixeira et al, 2011). Advantages include less surgical trauma, improved cosmetic results, better intra-operative visualization, and decreased surgical time, patient convalescence and pain, all of which increase efficiency and minimize medical costs (Gourley and Riese, 1990;Baldassarre et al, 2002;SanchezMargallo et al, 2012).…”