A
smartphone-operated one-lead electrocardiography (1L-ECG) device with an
integral algorithm can diagnose atrial fibrillation (AF) and atrial flutter
(AFL), Dutch researchers have shown in a study published in the current issue
of the Annals of Family Medicine.

Jelle C.L.
Himmelreich, M.D., from the University of Amsterdam, and colleagues recruited
consecutive patients who underwent 12-lead ECG (12L-ECG) for any nonacute
indication to validate a smartphone-operated device with an integrated
algorithm for AF.

Patients
held a smartphone with connected 1L-ECG while the 12L-ECG was being performed.
Blinded cardiologists assessed all 1L-ECG recordings and the 12L-ECG recordings
in random order. A total of 214 patients were included from 10 general
practices.

The
researchers found that in 23, 44, and 28 patients, the 12L-ECG diagnosed
AF/AFL, any rhythm abnormality, and any conduction abnormality, respectively.
The sensitivity and specificity for AF/AFL were both 100 percent with the
1L-ECG as assessed by cardiologists.

The AF
detection algorithm had 87.0 and 97.9 percent sensitivity and specificity,
respectively. The 1L-ECG as assessed by cardiologists had 90.9 and 93.5 percent
sensitivity and specificity, respectively, for any rhythm abnormality and 46.4
and 100 percent, respectively, for any conduction abnormality.

“A
smartphone-operated, 1L-ECG device,” the researchers concluded, “is a reliable
instrument for detecting AF when assessed by the internal detection algorithm,
and even more so when assessed by cardiologists.”

SOURCE: https://www.practiceupdate.com/c/90510/2/2/?elsca1=emc_enews_daily-digest&elsca2=email&elsca3=practiceupdate_cardio&elsca4=cardiology&elsca5=newsletter&rid=NTU2MjE4MTIzNzES1&lid=10332481

REFERENCE:
Himmelreich et al: Diagnostic Accuracy of a Smartphone-Operated, Single-Lead
Electrocardiography Device for Detection of Rhythm and Conduction Abnormalities
in Primary Care; 
http://www.annfammed.org/content/17/5/403.full