Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure.

Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure. Research Abstract Details 

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Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure. Abstract Text:

Yoshifumi Chiba,Kazuhira Maehara,Hiroyuki Yaoita,Akiomi Yoshihisa,Jiro Izumida,Yukio Maruyama,Yoshifumi Chiba,Kazuhira Maehara,Hiroyuki Yaoita,Akiomi Yoshihisa,Jiro Izumida,Yukio Maruyama,

BACKGROUND: Reduced exercise capacity may be related to decreased redistribution of blood flow from the non-exercising tissues to the exercising skeletal muscle in patients with mild chronic heart failure (CHF). METHODS AND RESULTS: In the present study 14 patients with mild CHF and 10 healthy subjects (N) underwent symptom-limited multistage-ergometer exercise, during which forearm vascular resistance (FVR), cardiac index (CI), systemic vascular resistance index (SVRI), and oxygen uptake (VO(2)) were measured non-invasively using the plethysmograph, impedance, and respiratory gas analysis methods, respectively. The VO(2) and CI at peak exercise were lower (p<0.01 each), and SVRI and FVR at both rest and peak exercise were higher in the CHF group than in N. However, both the percent increase in FVR and percent decrease in SVRI from the resting state to peak exercise were lower in CHF than N, and both of them correlated with not only peak VO(2), but also the corresponding resting value of FVR and SVRI (p<0.01 each). CONCLUSIONS: Redistribution of blood flow from the non-exercising tissues to the working skeletal muscles, which may participate in exercise capacity, can be blunted in CHF. The decreased vasoconstrictive response in the non-exercising tissues is intimately related to the increased resting vascular tone in CHF.

Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure. Publishing Authors By Initials

Y Chiba,K Maehara,H Yaoita,A Yoshihisa,J Izumida,Y Maruyama,Y Chiba,K Maehara,H Yaoita,A Yoshihisa,J Izumida,Y Maruyama,

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Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Circulation journal : official journal of the Japa

VOLUME: 71

Page Numbers: 922-8

Journal Abbreviation: Circ. J.

ISSN: 1346-9843

DAY: 28

MONTH: Jun

YEAR: 2007

Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure. Information

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LANGUAGE: eng

NlmUniqueID: 101137683

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Grant and Affiliation Information for Vasoconstrictive response in the vascular beds of the non-exercising forearm during leg exercise in patients with mild chronic heart failure.

AFFILIATION: First Department of Internal Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1295, Japan.

Country: Japan

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