Department of Clinical Sciences, School of Veterinary Medicine, Université de Montréal, 3200, rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2.
Can Vet J. 2023 Aug;64(8):733-741.
A 5-year-old wether was presented for an acute onset of loss of appetite and inability to urinate. Urethral urolithiasis causing urethral obstruction was diagnosed and a cystostomy catheter was placed. The wether continued to be unable to urinate through the urethra and further developed a perineal pseudodiverticulum. Diverticulectomy followed by a urethroplasty using porcine small intestinal submucosa was performed to relieve the obstruction. The wether developed a urethral stricture following urethroplasty and the owners refused a perineal urethroplasty. Cystourethrography, fluoroscopic-guided balloon dilations, and urethral stent placement were done to establish urethral patency. The wether developed tissue ingrowth through the stent, resulting in recurrent obstruction that necessitated placement of covered urethral stents. Key clinical message: Although obstructive uroliths usually carry a guarded prognosis in small ruminants, the use of novel interventional radiology techniques along with urethroplasty using a xenograft allowed a wether to achieve urethral patency and normal urinations.
一只 5 岁的去势公羊因急性食欲不振和无法排尿而就诊。诊断为尿道尿石症导致尿道梗阻,并放置了膀胱造口管。但公羊仍然无法通过尿道排尿,进一步发展为会阴假性憩室。通过使用猪小肠黏膜下层进行憩室切除术和尿道成形术来解除梗阻。尿道成形术后,公羊出现尿道狭窄,且主人拒绝进行会阴尿道成形术。通过尿道膀胱造影、荧光引导球囊扩张和尿道支架置入术来建立尿道通畅性。公羊的支架内发生组织向内生长,导致反复梗阻,需要放置带覆盖的尿道支架。关键临床信息:尽管阻塞性尿石在小反刍动物中通常预后不佳,但使用新型介入放射学技术和使用异种移植物进行尿道成形术,使这只公羊实现了尿道通畅和正常排尿。