97-05: Wearable wireless prolonged ECG monitoring in clinical practice: Diagnostic yield of 7-day versus 21-day recordings in patients with suspected arrhythmias

Abstract

Aims: To assess the diagnostic yield of 7 versus 21 day ECG monitoring by wearable wireless continuous ECG recording in patients with unexplained sustained palpitations or syncope, and previous history of paroxysmal atrial fibrillation (PAF) or unsustained ventricular tachycardia (USVT). Methods: We evaluated 104 consecutive patients referred in our Center ( pts, 36% females, median age 57 yrs), 22 pts with sustained palpitations, 12 pts with history of unexplained syncope, 41 patients with previous PAF and 29 patients with previous USVT. We utilized two different new wearable wireless continuous ECG recorders (NUUBO, Spain): 7-days 3-channel vest recorder performing ECG morphologic analysis (64 pts, 61.5%) a 21-day one-channel belt recorder performing RR analysis (40 pts, 38.5%). Results: The results are shown in the following table (REC: recording, DIAG: diagnostic test; DY: diagnostic yield; 7D: 7 days, 21D: 21 days): The quality of the tracing was adequate for the diagnosis in all recordings. Among patients with history of unexplained palpitations and syncope, the diagnostic yield significantly increased in 21-day vs 7-day recording (p , 0.01), while in patients with history of PAF or USVT the increase in diagnostic yield was not significant. Symptoms occurred in 40 pts (38%), while the remaining pts were asymptomatic during the recording. Conclusions: Wearable wireless prolonged ECG monitoring was feasible in clinical practice. These results suggest that 21-day ECG monitoring is recommended to study patients with unexplained palpitations and syncope, while 7-day monitoring may be sufficient to detected recurrent arrhythmias in patients with previous history of atrial fibrillation or USVT (Table Presented).