Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy.

Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy. Research Abstract Details 

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Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy. Abstract Text:

Tadashi Fujino,Takeshi Yamashita,Shinya Suzuki,Hiroaki Sugiyma,Koichi Sagara,Hitoshi Sawada,Tadanori Aizawa,Masaki Igarashi,Junichi Yamazaki,Tadashi Fujino,Takeshi Yamashita,Shinya Suzuki,Hiroaki Sugiyma,Koichi Sagara,Hitoshi Sawada,Tadanori Aizawa,Masaki Igarashi,Junichi Yamazaki,

BACKGROUND: Sustained tachycardia causes left ventricular (LV) systolic dysfunction leading to heart failure (HF), which is widely known as "tachycardia-induced cardiomyopathy (TIC)", but its prevalence and prognosis in Japanese remain unclear. METHODS AND RESULTS: Of 213 consecutive patients with HF associated with atrial fibrillation (AF) requiring hospitalization (n=213) between January 1999 and December 2004, and 104 (83 males, 67+/-12.6 years) were identified as not having any structural heart disease. Of them 41 (39%) had a normal LV ejection fraction (LVEF) at the initial admission, and the remaining patients fell into 2 groups: those with rapid (<6 months) normalization of the LVEF after AF management (presumed TIC, 30 patients, 29%) and those with persistent LV systolic dysfunction (dilated cardiomyopathy (DCM), 33 patients, 32%). Although the B-type natriuretic peptide value and LVEF did not differ between the 2 groups, the LV size on admission was significantly smaller in the TIC group (LV end-diastolic dimension (LVDd) 57.6+/-7.2, LV end-systolic dimension (LVDs) 49.4+/-8.0) than in the DCM group (LVDd 63.4 +/-8.8, LVDs 55.3+/-9.6, p<0.05). During a follow-up period of 42.1+/-21.2 months, cardiac death and recurrent HF hospitalization were significantly less frequent in the TIC group than in the DCM group. CONCLUSIONS: In AF-associated HF requiring hospitalization, TIC is the presumed cause in approximately one-third of patients without any previously known structural heart disease. That particular group is characterized by a relatively smaller LV and better prognosis under medical treatment.

Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy. Publishing Authors By Initials

T Fujino,T Yamashita,S Suzuki,H Sugiyma,K Sagara,H Sawada,T Aizawa,M Igarashi,J Yamazaki,T Fujino,T Yamashita,S Suzuki,H Sugiyma,K Sagara,H Sawada,T Aizawa,M Igarashi,J Yamazaki,

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Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Circulation journal : official journal of the Japa

VOLUME: 71

Page Numbers: 936-40

Journal Abbreviation: Circ. J.

ISSN: 1346-9843

DAY: 28

MONTH: Jun

YEAR: 2007

Characteristics of congestive heart failure accompanied by atrial fibrillation with special reference to tachycardia-induced cardiomyopathy. Information

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LANGUAGE: eng

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AFFILIATION: Cardiovascular Institute Hospital, Department of Cardiovascular Medicine, Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo 143-8541, Japan. fujino1101@med.toho-u.ac.jp

Country: Japan

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MEDLINETA: Circ J

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