Efficacy of long‐term oral telmisartan treatment in cats with hypertension: Results of a prospective European clinical trial
2019
Glaus, Tony M. | Elliott, Jonathan | Herberich, Esther | Zimmering, Tanja | Albrecht, Balazs
BACKGROUND: Efficacy of telmisartan in treating hypertension (HT) in cats has not been largely investigated. OBJECTIVE: Telmisartan oral solution effectively controls systolic arterial blood pressure (SABP) in hypertensive cats. ANIMALS: Two‐hundred eighty‐five client‐owned cats with systemic HT. METHODS: Prospective, multicenter, placebo‐controlled, randomized, double‐blinded study. Hypertensive cats diagnosed with SABP ≥160 mmHg and ≤200 mmHg without target‐organ‐damage were randomized (2 : 1 ratio) to receive 2 mg/kg telmisartan or placebo q24 PO. A 28‐day efficacy phase was followed by a 120‐day extended use phase. Efficacy was defined as significant difference in mean SABP reduction between telmisartan and placebo on Day 14 and group mean reduction in SABP of > 20 mmHg by telmisartan on Day 28 compared to baseline. RESULTS: Two‐hundred fifty‐two cats completed the efficacy and 144 cats the extended use phases. Mean SABP reduction at Day 14 differed significantly between groups (P < .001). Telmisartan reduced baseline SABP of 179 mmHg by 19.2 (95% confidence interval [CI]: 15.92‐22.52) and 24.6 (95% CI: 21.11‐28.14) mmHg at Days 14 and 28. The placebo group baseline SABP of 177 mmHg was reduced by 9.0 (95% CI: 5.30‐12.80) and 11.4 (95% CI: 7.94‐14.95) mmHg, respectively. Of note, 52% of telmisartan‐treated cats had SABP <150 mmHg at Day 28. Mean SABP reduction by telmisartan in severe (≥180 mmHg) and moderate HT (160‐179 mmHg) was comparable and persistent over time. CONCLUSIONS AND CLINICAL IMPORTANCE: Telmisartan solution (PO) was effective in reducing SABP in hypertensive cats with SABP ≥160 mmHg and ≤200 mmHg.
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