Key result
Handheld 6-lead ECG achieves ~99% diagnostic concordance with standard 12-lead ECG for rhythm classification.
Why the study?
Standard 12-lead ECGs require clinical infrastructure that can limit timely access, whereas portable 6-lead devices could expand diagnostics into community and remote settings.
Does a handheld 6-lead ECG provide equivalent rhythm classification and signal accuracy compared to a standard 12-lead ECG in patients with arrhythmia?
Observational (n=235)
Single-blind
No
Does a handheld 6-lead ECG provide equivalent rhythm classification and signal accuracy compared to a standard 12-lead ECG in patients with arrhythmia?
Answers are grounded in this paper and cite their sources.
A handheld 6-lead ECG provides near-perfect rhythm diagnostic concordance with standard 12-lead ECGs when acquired synchronously, supporting its use as a practical alternative in community and remote settings.
Aims Standard 12-lead electrocardiograms (ECGs) require clinical infrastructure that can limit timely access, whereas portable 6-lead devices offer the potential to expand diagnostics into community and remote settings. We aimed to evaluate the signal equivalence and rhythm classification accuracy of a handheld 6-lead ECG (HATIV® P30) compared with a standard 12-lead ECG in patients with arrhythmia, considering postural and synchronisation effects. Methods In this prospective single-centre study, 235 paired ECG recordings were obtained from patients with arrhythmia. Each dataset included a simultaneous 10-second 12-lead ECG and a time-aligned 10-second segment extracted from a 30-second handheld 6-lead ECG, recorded in both supine and sitting positions. A blinded electrophysiologist annotated rhythm types and measured ECG intervals and amplitudes. Results Diagnostic concordance between the 6-lead and 12-lead ECGs was 99.1% in both supine (n = 113) and sitting (n = 116) positions, with a single atrial flutter misclassified as atrial fibrillation in each setting. Bland–Altman analyses showed minimal mean differences (12-lead minus 6-lead): PR +12.1/+7.4 ms (supine/sitting), QRS −6.4/−6.0 ms, QT −10.3/−5.3 ms, QTc −11.5/−6.4 ms, and heart rate ≈ 0.03 bpm. Absolute differences were <20 ms in ~70% of PR and ~55–62% of QT/QTc measurements. In an exploratory asynchronous pairing (supine 12-lead vs. sitting 6-lead; n = 103), diagnostic accuracy declined to 97.1% and interval discrepancies widened, reflecting postural and temporal variability. Conclusions Among patients with arrhythmia, the handheld 6-lead ECG demonstrated near-perfect rhythm agreement and small numerical deviations compared with the 12-lead ECG under synchronised acquisition in both supine and sitting positions. Asynchronous or posture-mismatched comparisons reduced agreement, highlighting the importance of acquisition consistency. The 6-lead device may serve as a practical alternative when 12-lead ECGs are unavailable, facilitating arrhythmia assessment in community and remote environments.
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Park et al. (2026) conducted an observational in Arrhythmia (n=235). Handheld 6-lead ECG (HATIV® P30) vs. Standard 12-lead ECG was evaluated on Diagnostic concordance between the 6-lead and 12-lead ECGs. The handheld 6-lead ECG demonstrated 99.1% diagnostic concordance with the standard 12-lead ECG for rhythm classification in both supine and sitting positions among patients with arrhythmia.
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