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

作者：Matsui Taishi; Shinozaki Ryo; Watanabe Eiichi; Aizawa Yoshifusa^*

来源：Journal of Electrocardiology, 2018, 51(3): 382-385.

DOI：10.1016/j.jelectrocard.2018.03.007

• Atrial fibrillation
• R-R interval analysis

Differences in successive R-R intervals (RR's) were normalized by RRls 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.