Clustering of RR intervals predicts effective electrical cardioversion for atrial fibrillation.

  title={Clustering of RR intervals predicts effective electrical cardioversion for atrial fibrillation.},
  author={Maarten P. van den Berg and Trudeke Van Noord and Jan Brouwer and Jaap Haaksma and Dirk Jan van Veldhuisen and Harry J. G. M. Crijns and Isabelle Van Gelder},
  journal={Journal of cardiovascular electrophysiology},
  volume={15 9},
INTRODUCTION Atrial fibrillation (AF) is characterized by an irregularly irregular ("random") heart beat. However, controversy exists whether the ventricular rhythm in AF is truly random. We investigated randomness by constructing three-dimensional RR interval plots (3D plots), allowing identification of "clustering" of RR intervals. It was hypothesized that electrical cardioversion (ECV) would be more effective in AF patients with clustering, because clustering might reflect a higher degree of… CONTINUE READING
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