Immediate Administration of Tolvaptan Prevents the Exacerbation of Acute Kidney Injury and Improves the Mid-Term Prognosis of Patients With Severely Decompensated Acute Heart Failure
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Background: Tolvaptan, an oral selective vasopressin 2 receptor antagonist that acts on the distal nephrons to cause a loss of electrolyte-free water, is rarely used during the acute phase of acute heart failure (AHF). Methods and Results: We investigated 183 AHF patients admitted to the intensive care unit and administered tolvaptan (7.5mg) with continuous intravenous furosemide, and then additionally at 12-h intervals until HF was compensated. When intravenous furosemide was changed to peroral use, the administration of tolvaptan was stopped. The patients were assigned to tolvaptan (n=52) or conventional treatment (n=131) groups. The amount of intravenous furosemide was significantly lower (35.4 [16.3–56.0] mg vs. 80.0 [30.4–220.0] mg), the urine volume was significantly higher on days 1 and 2 (3,691 [3,109–4,198] ml and 2,953 [2,128–3,592] ml vs. 2,270 [1,535–3,258] ml and 2,129 [1,407–2,906] ml) and the numbers of patients with worsening-AKI (step-up RIFLE Class to I or F) and Class F were significantly fewer (5.8% and 1.9% vs. 19.1% and 16.0%) in the tolvaptan group than in the conventional group, respectively. One of the specific medications indicated worsening-AKI and in-hospital mortality was tolvaptan (odds ratio [OR] 0.155, 95% confidence interval [CI] 0.037–0.657 and OR 0.191, 95% CI 0.037–0.985). The Kaplan-Meier curves showed that the death rate within 6 months was significantly lower in the tolvaptan group. The same result was found after propensity matching of the data. Conclusions: Early administration of tolvaptan could prevent exacerbation of AKI and improve the prognosis for AHF patients.
- 一般社団法人 日本循環器学会の論文
一般社団法人 日本循環器学会 | 論文
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