Woerde Dennis J, Palm Carrie A, Cutolo Emily C, Philp Helen S, Westropp Jodi L
William R Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA.
Department of Veterinary Medicine and Epidemiology, University of California-Davis, Davis, CA, USA.
JFMS Open Rep. 2025 Aug 23;11(2):20551169251362828. doi: 10.1177/20551169251362828. eCollection 2025 Jul-Dec.
A 10-year-old female neutered domestic shorthair cat presented with stranguria. The cat was bradycardic and had a firm urinary bladder on physical examination. On initial laboratory testing, the cat had severe azotemia with a creatinine of 15.8 mg/dl (reference interval [RI] 1.1-2.2), blood urea nitrogen of 217 mg/dl (RI 18-33) and potassium of 8.9 mmol/l (RI 3.5-5.0). Abdominal radiography revealed three cystoliths, with one cystolith suspected of being lodged within the trigone. Ultrasound of the abdomen showed marked suspended echogenic debris within the urinary bladder. was isolated from aerobic bacterial urine culture. A cystotomy was performed, and crystallographic analysis of the removed cystoliths showed they were composed of 94% struvite and 6% calcium phosphate. The cat recovered well and was discharged 2 days postoperatively. Three weeks postoperatively, the cat showed resolution of all clinical signs and azotemia.
Urethral obstruction is common in male cats because of the narrow diameter of their urethra. In contrast, it is rare for female cats to experience lower urinary tract obstruction (LUTO). Identifying the underlying cause of LUTO is crucial for providing appropriate and targeted treatment. This case report describes a unique cause of LUTO resulting from associated with struvite urolithiasis in a female cat.
一只10岁已绝育的雌性家养短毛猫出现排尿困难。该猫心动过缓，体格检查时膀胱坚硬。初步实验室检查显示，该猫患有严重氮质血症，肌酐为15.8毫克/分升（参考区间[RI]1.1 - 2.2），血尿素氮为217毫克/分升（RI 18 - 33），钾为8.9毫摩尔/升（RI 3.5 - 5.0）。腹部X线摄影显示有三个膀胱结石，其中一个膀胱结石疑似嵌顿在膀胱三角区。腹部超声显示膀胱内有大量悬浮的强回声碎片。从需氧菌尿液培养中分离出[具体细菌名称未给出]。进行了膀胱切开术，对取出的膀胱结石进行晶体分析，结果显示它们由94%的鸟粪石和6%的磷酸钙组成。这只猫恢复良好，术后2天出院。术后三周，这只猫所有临床症状和氮质血症均消失。
由于雄性猫尿道直径狭窄，尿道梗阻在雄性猫中很常见。相比之下，雌性猫发生下尿路梗阻（LUTO）的情况很少见。确定LUTO的潜在原因对于提供适当和有针对性的治疗至关重要。本病例报告描述了一只雌性猫因与鸟粪石尿石症相关的[具体病因未明确写出]导致LUTO的独特原因。
