Diagnostic Accuracy of a Smartphone-Operated, Single-Lead Electrocardiography Device for Detection of Rhythm and Conduction Abnormalities in Primary Care

Jelle C.L. Himmelreich, MD, MSc; Evert P.M. Karregat, MD, MSc; Wim A.M. Lucassen, MD, PhD; Henk C.P.M. van Weert, MD, PhD; Joris R. de Groot, MD, PhD; M. Louis Handoko, MD, PhD; Robin Nijveldt, MD, PhD; Ralf E. Harskamp, MD, PhD


Ann Fam Med. 2019;17(5):403-411. 

In This Article


A smartphone-operated, 1L-ECG device is a reliable instrument for detecting AF when assessed by the internal detection algorithm, and even more so when assessed by cardiologists. Moreover, the 1L-ECG recording can display atrial and ventricular ectopy with high sensitivity. The 1L-ECG recording was less robust for detecting conduction delays. Our primary care–based study provides important insights for physicians who are in need of a point-of-care ECG device that can lower the logistical threshold for performing ECG to improve diagnostic gain.