Urine Osmolality Estimated Using Urine Urea Nitrogen, Sodium and Creatinine Can Effectively Predict Response to Tolvaptan in Decompensated Heart Failure Patients
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概要
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Background: Urine osmolality (U-OSM) is valuable to predict response to tolvaptan (TLV) in decompensated heart failure patients, but measurement of U-OSM is not always available on site. Methods and Results: Data were collected from 66 hospitalized patients with decompensated heart failure who had received TLV at 3.75–15mg/day. U-OSM, which was estimated using the following formula: 1.07×{2×[(urine sodium (mEq/L)]+[urine urea nitrogen (mg/dl)]/2.8+[urine creatinine (mg/dl)]×2/3}+16, was well correlated with the actual measurement (r=0.938, P<0.001). Criteria consisting of C1 (estimated baseline U-OSM >358mOsm/L) and C2 (%decrease in estimated U-OSM >24% at 4–6h after the first TLV dose) significantly discriminated responders from non-responders (P<0.05). Conclusions: Response to TLV can be predicted using U-OSM, which can be estimated using urine urea nitrogen, sodium, and creatinine concentration data.
著者
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Inaba Toshiro
Department Of Cardiology The Cardiovascular Institute
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Kyo Shunei
Department Of Cardiac Surgery Saitama Medical School
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Shiga Taro
Department Of Cardiovascular Medicine Graduate School Of Medicine The University Of Tokyo
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Hatano Masaru
Department Of Cardiology Narita Red Cross Hospital
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Kato Naoko
Department Of Anesthesiology Aichi Gakuin University School Of Dentistry
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Kinugawa Koichiro
Department Of Cardiovascular Medicine Graduate School Of Medicine University Of Tokyo
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Yao Atsushi
Department Of Cardiology Tokyo University Hospital
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Maki Hisataka
Department Of Cardiovascular Medicine Graduate School Of Medicine University Of Tokyo
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Komuro Issei
Department Of Cardiovascular Medicine
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Imamura Teruhiko
Department Of Cardiovascular Medicine Graduate School Of Medicine University Of Tokyo
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KINUGAWA Koichiro
Department of Therapeutic Strategy for Heart Failure, Graduate School of Medicine, University of Tokyo
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Minatsuki Shun
Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo
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Muraoka Hironori
Department of Cardiology, JR Tokyo General Hospital
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