Oct 27, 2009

A distinctly bimodal distribution pattern in the RR interval histogram predicts early recurrence of atrial fibrillation after electrical cardioversion

International Journal of Cardiology
Xiao Hua GuoA J Camm

Abstract

Abnormal AV nodal behaviour could contribute to recurrence of Atrial Fibrillation (AF) after electrical cardioversion (ECV). We constructed RR interval histograms from 24-hour ECGs recorded before ECV in 98 patients with persistent AF. RR histograms were classified as unimodal or bimodal, and bimodal histograms classified into distinctly or indistinctly bimodal. At 1 week after ECV, 52 patients (53%) were in AF and at one-month 66 (67%) were in AF. A bimodal RR interval distribution during AF was found in 17 patients (18%), a distinctly bimodal RR histogram in 8 of these (47%). Compared to those with indistinct bimodality, patients with a distinctly bimodal RR histogram were more likely to have AF at one-week and one-month (88 vs. 33%, 100 vs. 33%, p=0.01, p=0.009, respectively).

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Mentioned in this Paper

Myopathy
Recurrent Malignant Neoplasm
Atrial Fibrillation
Recurrence (Disease Attribute)
NODAL gene
Electroversion Therapy
Heart Atrium
Relapse
Electrocardiographic Recorders

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