最後更新：2026年10月1日
尿道狹窄為尿道管腔因疤痕組織、纖維化或其他原因導致口徑縮小的疾病。犬貓常見原因包括尿道手術後疤痕（尿道切開術、尿道造口術後）、尿道外傷、慢性泌尿道感染與尿道結石反覆損傷。公犬與公貓因尿道較長且狹窄，更容易受影響。
貓隻尿道狹窄可見於會陰尿道造口術（perineal urethrostomy）後疤痕。公貓泌尿道阻塞反覆導管置入後亦可發生。
犬隻尿道狹窄常見於尿道手術後。公犬較常見。反覆尿道阻塞處理後可能發生。
可點的項目會開啟該疾病頁。要依症狀與檢驗排出完整清單，請用鑑別診斷工具。
建議：0.9% NaCl 或 LRS，矯正脫水後以 2× 維持量支持 post-obstructive diuresis
類型：0.9% NaCl
監測頻率：每日觀察
[1]The Role of LIM Kinase in the Male Urogenital System.
[2]Successful engraftment of epithelial cells derived from autologous rabbit buccal mucosal tissue, encapsulated in a polymer scaffold in a rabbit model of a urethral stricture, transplanted using the transurethral approach.
[3]The Effects of M2 Macrophages-Derived Exosomes on Urethral Fibrosis and Stricture in Scar Formation.
[4]A novel vascularized urethra-on-a-chip model.
[5]Imbalance in extracellular matrix degradation in urethral stricture.
需系統性診斷與治療計畫，延遲可能影響預後 (systematic workup needed, delay may affect prognosis)
預後取決於狹窄原因、位置與程度。單純疤痕性狹窄經適當治療（擴張或手術）多數可改善。復發性狹窄較難處理。尿道支架可提供長期開通性但可能有併發症。會陰尿道造口術後狹窄在貓隻經修正手術通常預後良好。
Diagnostic Approach for Urethral Stricture
Assess for dysuria, hematuria, pollakiuria, stranguria; palpate bladder and kidneys
Complete urinalysis via cystocentesis; urine culture and sensitivity for bacterial infection
Abdominal radiographs and ultrasound to evaluate urinary tract for calculi, masses, or structural changes