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A warm footbath improves coronary flow reserve in patients with mild-to-moderate coronary artery disease

Authors
 Se-Jung Yoon ; Jong-Kwan Park ; Ho-Joong Youn ; Se-Joong Rim ; Yoon-Suk Choi ; Min-Sub Kwak ; Suk-Min Hong ; Joo Young Yang ; Dong Woon Jeon ; Seungjin Oh 
Citation
 Echocardiography , Vol.28(10) : 1119~1124, 2011 
Journal Title
 Echocardiography 
ISSN
 0742-2822 
Issue Date
2011
Abstract
BACKGROUNDS: Recent studies have shown that thermal therapy by means of warm waterbaths and sauna has beneficial effects in chronic heart failure. However, a comprehensive investigation of the hemodynamic effects of thermal vasodilation on coronary arteries has not been previously undertaken. In this study, we studied the effect of a warm footbath (WFB) on coronary arteries in patients with coronary artery disease (CAD), as well as any adverse effect. METHODS: We studied 21 patients (33.3% men, mean age 60.8 ± 13.5 years) with CAD. Coronary flow Doppler examination of the left anterior descending coronary artery and coronary flow reserve (CFR) were performed and measured using adenosine before and after a WFB. RESULTS: Systolic and diastolic blood pressure and heart rate did not change with the WFB. Mean velocity of diastolic coronary flow significantly increased (diastolic mean flow velocity: 18.3 ± 7.1 cm/sec initial, 21.5 ± 8.0 cm/sec follow-up, P = 0.002) and CFR significantly improved (1.6 ± 0.4 vs. 2.2 ± 0.5, P < 0.001) after WFB. The WFB was well accepted and no relevant adverse effects were observed. The change of CFR after WFB correlated well with diastolic function (E', r = 0.51, P = 0.031; E/E', r =-0.675, P = 0.002). CONCLUSIONS: A WFB significantly improved CFR without any adverse effects in patients with mild-to-moderate CAD and can be applied with little risk of a coronary artery event if appropriately performed.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/94573
DOI
10.1111/j.1540-8175.2011.01493.x
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
Yonsei Authors
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Link
 http://onlinelibrary.wiley.com/doi/10.1111/j.1540-8175.2011.01493.x/abstract
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