Treatment of proteinuria in dogs with telmisartan: A retrospective study.

Abstract

BACKGROUND: Use of telmisartan for the treatment of proteinuria in dogs has not been thoroughly investigated. HYPOTHESIS/OBJECTIVES: Telmisartan can be effective for the treatment of proteinuria in dogs. ANIMALS: Forty-four client-owned dogs with proteinuria. METHODS: Retrospective study. Dogs diagnosed with clinically relevant proteinuria (nonazotemic dogs with a urine protein-to-creatinine ratio [UPC] &#x2265;2 and azotemic dogs with UPC &#x2265;0.5) were separated into 3 groups: telmisartan alone, with benazepril, or with mycophenolate. The UPC was recorded before treatment and at subsequent follow-ups (1, 3, 6, and 12&#x2009;months, as available). Response to treatment was categorized as complete (UPC &#x2c2;0.5), partial (UPC decreased by &#x2265;50% but still &#x2265;0.5), or no response (UPC decreased by <50%). Serum creatinine and potassium concentrations and arterial pressure also were recorded. RESULTS: In the telmisartan group, treatment response (UPC &#x2c2;0.5 or decreased by &#x2265;50%) was observed in 70%, 68%, 80%, and 60% of dogs at 1, 3, 6, and 12&#x2009;months follow-up, respectively. No significant changes were noted in serum creatinine or potassium concentrations, or in arterial blood pressure at all follow-up times. Adverse effects consisted of mild self-limiting gastrointestinal signs in 5 dogs. Two dogs developed clinically relevant azotemia that required discontinuation of the treatment before the first follow-up. CONCLUSIONS AND CLINICAL IMPORTANCE: Telmisartan can be considered for treatment of proteinuria in dogs, alone or in combination with other treatments for proteinuria.