Abstract
In this study, we used spectral analysis to assess changes in respiratory recording variability during infusion of L-arginine and vitamin C, individually or together, in patients with chronic heart failure. We found that healthy subjects have a substantial ability to modulate sympathetic-mediated peripheral vascular resistance through endothelial synthesis of nitric oxide. Patients with chronic heart failure lose this ability.
Publication types
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Clinical Trial
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Randomized Controlled Trial
MeSH terms
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Algorithms
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Antioxidants / pharmacology*
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Arginine / pharmacology*
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Ascorbic Acid / pharmacology*
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Autonomic Nervous System / drug effects*
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Cardiomyopathy, Dilated / etiology
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Cardiomyopathy, Dilated / physiopathology*
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Cross-Over Studies
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Female
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Humans
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Male
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Middle Aged
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Myocardial Ischemia / complications
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Respiration / drug effects*
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Signal Processing, Computer-Assisted
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Single-Blind Method
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Vascular Resistance / drug effects
Substances
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Antioxidants
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Arginine
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Ascorbic Acid