Clinical findings and outcome following medical treatment in dogs with idiopathic renal haematuria: 41 cases (2001-2018).

A J Kortum, J Bazelle, A Gomez Selgas, A C C Kent, T L Williams, M E Herrtage

The Journal of small animal practice 2021 Oct

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To characterise and document the progression of idiopathic renal haematuria in a large cohort of medically managed UK dogs. Retrospective study of 41 client-owned dogs with confirmed (n=14), or suspected (n=27) idiopathic renal haematuria from 4 UK-based referral centres. Clinical findings and outcomes of dogs (2001 to 2018) were determined from the review of medical records and telephone follow-up. Median survival time from diagnosis was long [1482 (152 to 1825) days] irrespective of treatment and clinical response. Only 1 case was euthanased due to idiopathic renal haematuria, and anaemia or azotaemia occurred infrequently. In total, 25 dogs received angiotensin-converting enzyme-inhibitor or angiotensin receptor blocker therapy, of which 23 received benazepril [0.44 (0.19 to 0.82) mg/kg/24 hours], two received enalapril (0.40 and 0.78 mg/kg/24 hours) and one received telmisartan (1 mg/kg/24 hours). In cases with follow-up urinalyses, complete resolution of haematuria was documented in eight of 19 (42%) dogs following angiotensin-converting enzyme-inhibitor/angiotensin receptor blocker treatment, with partial improvement in five of 19 (26%) and no improvement in six of 19 (31%). Conversely, of the two untreated dogs where outcome was available, one had partial improvement and the other had no improvement. In this study, idiopathic renal haematuria was associated with a good prognosis and low complication rate. Resolution or improvement in haematuria occurred in both angiotensin-converting enzyme-inhibitor/angiotensin receptor blocker-treated and untreated dogs, indicating that further studies are required to evaluate the effectiveness and safety of these interventions. © 2021 The Authors. Journal of Small Animal Practice published by John Wiley & Sons Ltd on behalf of British Small Animal Veterinary Association.

Citation

A J Kortum, J Bazelle, A Gomez Selgas, A C C Kent, T L Williams, M E Herrtage. Clinical findings and outcome following medical treatment in dogs with idiopathic renal haematuria: 41 cases (2001-2018). The Journal of small animal practice. 2021 Oct;62(10):850-860