The comparison of Kardia Mobile and Hartmann Veroval 2 in 1 in detecting first diagnosed atrial fibrillation

Abstract

BACKGROUND: Atrial fibrillation (AF) is the leading cause of stroke. The European Society of Cardiology
(ESC) advises opportunistic AF screening among patients aged ≥ 65 years. Considering this, the
aim herein, was compare the feasibility of two different systems of smartphone-based electrocardiogram
(ECG) recordings to identify AF among those without a previous arrhythmia history.
METHODS: Prospective AF screening was conducted at six pharmacies using Kardia Mobile and
Hartmann Veroval 2 in 1. A single-lead ECG was acquired by the placement of fingers on the pads.
A cardiologist evaluated findings from both devices.
RESULTS: Atrial fibrillation was identified in 3.60% and previously unknown AF was detected in 1.92%
of the study participants. Sensitivity and specificity of the Kardia application in detecting AF were
66.7% (95% confidence interval [CI] 38.4–88.2%) and 98.5% (95% CI 96.7–99.5%), and for Veroval
10.0% (95% CI 0.23–44.5%) and 94.96% (95% CI 92.15–96.98%), accordingly. Inter-rater agreement
was k = 0.088 (95% CI 1.59–16.1%).
CONCLUSIONS: Mobile devices can detect AF, but each finding must be verified by a professional. The
Kardia application appeared to be more user-friendly than Veroval. Cardiovascular screening using
mobile devices is feasible at pharmacies. Hence it might be considered for routine use.