Abstract
Single-lead, mobile ECG devices have enhanced the feasibility of arrhythmia diagnosis. However, the diagnosis of other cardiac pathologies is hindered by the use of a single lead, as compared to traditional 12-lead ECG. The Alivecor Kardia 12L device is a novel device that can record 12-lead ECG. In this study, we evaluated the accuracy of Kardia 12L devices compared to a 12-lead ECG. Patients seen in an outpatient cardiology clinic were enrolled in the study. Kardia 12L (leads I, II, V2 and V4) was obtained simultaneously with a 12-lead ECG in the supine position. Kardia 12L uses a Deep Neural Network model to expand the 7 leads into a complete 12-lead ECG. Median beats from each method were compared using Pearson’s correlation. One hundred patients (mean age 57±18 years, 55% female) were enrolled. QRS duration, QT duration, R wave amplitude and ST segment amplitude showed excellent correlation between Kardia 12L and 12-lead ECG (r=0.97, r=0.98, r=0.99 and r=0.96, respectively, p<0.001; Figure). Kardia 12L data is all highly correlated with the 12-lead ECG, enabling rapid acquisition of complete ECG information. This approach has significant implications for rapid ECG diagnosis in clinical practice.
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