Shinobu Sugihara1, Yoshiharu Kinugasa1, Tomoaki Takata2, Takaaki Sugihara2, Keiko Hosho2, Chitose Imai3, Hiromi Ito4, Kensaku Yamada1, Masahiko Kato1, Kazuhiro Yamamoto1. 1. Division of Cardiovascular Medicine, Department of Molecular Medicine and Therapeutics, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan. 2. †Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan. 3. ‡Division of Clinical Laboratory Medicine, Department of Pathophysiological and Therapeutic Science, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan. 4. §Department of Clinical Radiology, Tottori University Hospital, Yonago 683-8504, Japan.
Abstract
BACKGROUND: Diuretics are essential for treating acute decompensated heart failure (ADHF), but the response is inconsistent. This study aimed to clarify whether kidney volume as assessed by ultrasound (US) predicts diuretic resistance in patients with ADHF. METHODS: We enrolled 29 patients with ADHF and 32 controls. Height-adjusted kidney volume was assessed by US. We divided patients into two groups based on the median value of total daily use of furosemide (intravenous dose plus 0.5 × oral dose of furosemide equivalents) during 3 days from admission. RESULTS: Patients with ADHF had a significantly smaller left kidney volume than did control subjects (27.7 ± 10.0 vs. 32.8 ± 8.8 mL/m, P < 0.05). Patients in the high-dose furosemide group (≥ 51.7 mg/d) had a significantly lower estimated glomerular filtration rate (eGFR) and a significantly smaller kidney volume than did those in the low-dose furosemide group (eGFR: 43.9 ± 20.4 vs. 60.8 ± 21.6 mL/min/1.73 m2, left kidney volume: 23.2 ± 5.2 vs. 32.6 ± 11.0 mL/m, right kidney volume: 26.5 ± 7.5 vs. 32.6 ± 7.9 mL/m, all P < 0.05). Multivariate logistic analysis showed that left kidney volume, but not eGFR, was independently associated with the requirement of high-dose furosemide (odds ratio: 0.856, 95% confidence interval: 0.735-0.997, P < 0.05). CONCLUSION: Kidney volume as assessed by US is a useful predictor of diuretic resistance in patients with ADHF.
BACKGROUND: Diuretics are essential for treating acute decompensated heart failure (ADHF), but the response is inconsistent. This study aimed to clarify whether kidney volume as assessed by ultrasound (US) predicts diuretic resistance in patients with ADHF. METHODS: We enrolled 29 patients with ADHF and 32 controls. Height-adjusted kidney volume was assessed by US. We divided patients into two groups based on the median value of total daily use of furosemide (intravenous dose plus 0.5 × oral dose of furosemide equivalents) during 3 days from admission. RESULTS:Patients with ADHF had a significantly smaller left kidney volume than did control subjects (27.7 ± 10.0 vs. 32.8 ± 8.8 mL/m, P < 0.05). Patients in the high-dose furosemide group (≥ 51.7 mg/d) had a significantly lower estimated glomerular filtration rate (eGFR) and a significantly smaller kidney volume than did those in the low-dose furosemide group (eGFR: 43.9 ± 20.4 vs. 60.8 ± 21.6 mL/min/1.73 m2, left kidney volume: 23.2 ± 5.2 vs. 32.6 ± 11.0 mL/m, right kidney volume: 26.5 ± 7.5 vs. 32.6 ± 7.9 mL/m, all P < 0.05). Multivariate logistic analysis showed that left kidney volume, but not eGFR, was independently associated with the requirement of high-dose furosemide (odds ratio: 0.856, 95% confidence interval: 0.735-0.997, P < 0.05). CONCLUSION: Kidney volume as assessed by US is a useful predictor of diuretic resistance in patients with ADHF.
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