A Study of Validation in Atrial Fibrillation Detection with a Wristwatch-type Pulse Wave Monitoring Device : Comparison with Holter Monitoring Device（CVI ARO 3 study）

wristwatch-type pulse wave monitoring device for atrial fibrillation（AF）. Methods : In 84 AF patients（73 paroxysmal and 11 persistent AF, age 70.1 ± 10.0 years）, the new wristwatch-type pulse wave monitoring device（test machine : HC-1, Seiko Epson）and the already-existing Holter monitoring device（SEER-light, GE healthcare）were simultaneously used to record the pulse and electrocardiogram, respectively, for 24 hours. Both of the recordings were separated by 30-min intervals for AF detection（≥ 30-min persisting AF was counted）. AF burden was compared between the two devices. Results : Among 84 patients, AF was detected in 29 patients by HC-1. Using the Holter monitoring device（AF was detected in 28 patients）as the gold standard, the sensitivity and the specificity of the pulse wave device for detecting AF were 92.8％ and 94.6％ , respectively. Among 3660 sections, AF was detected in 682 sections by HC-1. Using the Holter monitoring device（AF was detected in 724 sections）as the gold standard, the sensitivity and specificity of HC-1 were 92.0％ and 99.5％ , respectively. The correlation of AF burden between HC-1 and the Holter monitoring device was 0.799. Conclusion : The wristwatch-type pulse wave monitoring device, HC-1, could be worn for a long period of time and could continuously judge the irregularity of pulses which were specific to AF. In that sense, it would be a useful tool to improve the diagnosis of asymptomatic AF.