Analysis of variability of R-R intervals for the diagnosis of atrial fibrillation: A new algorithm

Journal of Electrocardiology
Taishi MatsuiYoshifusa Aizawa

Abstract

Differences in successive R-R intervals (RRIs) were normalized by RRIs before and after the indexing beats (normalized DRs) in individuals with normal sinus rhythm (NSR) and 98.89% of normalized DRs were found to distribute within mean±0.100 (≒mean±3SD), whereas 73.47% were out of this range in atrial fibrillation (AF). When 7 out 20 normalized DRs fell outside of 0.000±0.100, NSR (n=129) and AF (n=108) could be discriminated with high sensitivity, specificity, and predictive values (>99.0% for all). This method will be used in detecting AF candidates from a small number of heart beats or arterial pulses.

Citations

Jun 22, 2021·Circulation Journal : Official Journal of the Japanese Circulation Society·Yousaku OkuboUNKNOWN MYBEAT Trial Investigators

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