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Atrial fibrillation impairs endothelial function of forearm vessels in humans.

Abstract：

BACKGROUND:Although there have been many studies on the effects of atrial fibrillation (AF) on cardiac function, few studies have been done on its effects on endothelial function. The present study was designed to examine the effects of AF on endothelial function in human subjects. METHODS AND RESULTS:Changes in forearm blood flow (FBF) induced by acetylcholine and nitroglycerin were measured by using plethysmography in 14 patients with lone AF, 13 patients with AF and underlying heart disease, and 12 normal control subjects. In the patients, these measurements were repeated after cardioversion. Although baseline FBF was the same in the 3 groups, acetylcholine-induced increases in FBF were significantly smaller in both patient groups than in the control group, and FBF increases were particularly depressed in AF patients with underlying heart disease. After restoration of sinus rhythm by cardioversion, FBF response to the highest dose of acetylcholine increased by 46% in patients with lone AF (n = 10) and by 90% in AF patients with underlying heart disease (n = 11). Nitroglycerin-induced vasodilatation was the same in all 3 groups and was not affected by cardioversion. CONCLUSIONS:These findings suggest that endothelium-dependent vasodilatation is impaired by AF and improves after sinus rhythm is restored.

journal_name

J Card Fail

journal_title

Journal of cardiac failure

authors

Takahashi N,Ishibashi Y,Shimada T,Sakane T,Ohata S,Sugamori T,Ohta Y,Inoue S,Nakamura K,Shimizu H,Katoh H,Sano K,Murakami Y,Hashimoto M

doi

10.1054/jcaf.2001.22107

keywords:

subject

Has Abstract

pub_date

2001-03-01 00:00:00

pages

45-54

issue

1

eissn

1071-9164

issn

1532-8414

pii

S1071916401441571

journal_volume

7

pub_type

杂志文章

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