Diagnosing a cardiac cause for palpitations: Five-year service evaluation of a smartphone ambulatory ECG pathway for Emergency Department patients.

Background: Capturing an electrocardiogram (ECG) during transient symptoms remains challenging in emergency department (ED) patients with palpitations. Following the IPED trial, a smartphone-based ambulatory ECG event recorder pathway was integrated into NHS care. We evaluated this service over five years, assessing diagnostic yield, management, one-year outcomes and predictors of cardiac arrhythmia. Methods: Single-centre service evaluation of consecutive patients referred with palpitations to a smartphone-based ambulatory ECG event recorder clinic between 24th July 2019 and 24th July 2024. P

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