Open AccessDiagnostic accuracy of a new algorithm to detect atrial fibrillation in a home blood pressure monitor
Author(s) -
Kabutoya Tomoyuki,
Imai Yasushi,
Hoshide Satoshi,
Kario Kazuomi
Publication year - 2017
Publication title -
the journal of clinical hypertension
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 67
eISSN - 1751-7176
pISSN - 1524-6175
DOI - 10.1111/jch.13076
Subject(s) - medicine , atrial fibrillation , cardiology , blood pressure , beat (acoustics) , sinus rhythm , pulse (music) , cutoff , heart rate , algorithm , mathematics , voltage , acoustics , physics , quantum mechanics
The authors evaluated a new algorithm for detecting atrial fibrillation ( AF ) using a home blood pressure monitor. Three serial blood pressure values were measured by the monitor in 16 patients with AF and 20 patients with sinus rhythm. The authors defined “monitor AF in irregular pulse peak ( IPP ) 25” as follows: (1) IPP : |interval of pulse peak − the average of the interval of the pulse peak| ≥ the average of the interval of the pulse peak ×25%; (2) irregular heart beat: beats of IPP ≥ total pulse ×20%; and (3) monitor AF : two or more irregular heart beat s of the three blood pressure measurements. Cutoff IPP values were set at 20% ( IPP 20) and 15% ( IPP 15). The monitor's AF specificity was 1.0 in IPP 25, IPP 20, and IPP 15, and its sensitivity was 0.88 in IPP 25, 0.94 in IPP 20, and 1.0 in IPP 15. The new algorithm had high diagnostic accuracy for detecting AF and a low false‐positive rate.