ECG monitoring duration and arrhythmia detection
The patients or their families had no difficulty attaching the ECG device. A median 57 hours (range: 20–179 hours) of ECG monitoring per patient was performed. Figure 4 shows the relationship between the prescheduled ECG monitoring duration and the actual ECG monitoring duration for each patient. Monitoring the ECG was performed as planned in most cases. Figure 5 shows a representative case of ECG monitoring. By utilizing the postal delivery service, this patient did not need to visit the hospital to undergo the long-term ECG examination. Arrhythmic events were detected in 8 of the 25 patients (32%), atrial fibrillation (AF) in 5 patients, atrial tachycardia in 2 patients, and frequent premature ventricular contractions in 1 patient.