The Journal of The Japanese Society of Balneology, Climatology and Physical Medicine
Online ISSN : 1884-3697
Print ISSN : 0029-0343
ISSN-L : 0029-0343
Immersion in Hot Spring Improves Cardiovascular Functions in Patients with Chronic Heart Failure
Yoshihiro KUDOJun-ichi OYAMAYasuhiro NISHIYAMAToyoki MAEDANobunao IKEWAKINaoki MAKINO
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JOURNALS FREE ACCESS

2008 Volume 71 Issue 4 Pages 234-240

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Abstract

Objectives: The purpose of this study was to examine the beneficial effects of balneotherapy in patients with chronic heart failure (CHF).
Background: Some reports have shown that balneotherapy reduces systemic blood pressure in healthy volunteers. However, it is not clear whether balneotherapy improves the status of CHF. We hypothesized that hyperthermia using hot water would improve cardiac and peripheral endothelial function and clinical symptoms.
Methods: Twenty-six patients with chronic systolic heart failure classified as New York Heart Association (NYHA) functional status II or III were divided into two groups. In the balneotherapy group, patients were immersed in a hot spring at 40°C for 10min daily for two weeks; in the control group, patients took a daily shower. We measured plasma brain natriuretic peptide (BNP) and asymmetric dimethylarginine (ADMA). The left ventricular ejection fraction (LVEF) and cardiothoracic ratio (CTR) were evaluated by echocardiography and chest radiography, respectively. Brachial-ankle pulse-wave velocity (baPWV) was measured non-invasively using an automatic device.
Results: Clinical symptoms were improved after two weeks of hot spring therapy. Although heart rate and CTR did not change, clinical symptom and LVEF improved and mean blood pressure, BNP, ADMA and PWV significantly decreased.
Conclusions: Repeated immersion in a hot spring improves peripheral vascular endothelial function, thus leading to improvement of clinical activity and symptoms in patients with CHF.

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