This study will verify the 1-channel patch-type ECG's arrhythmia diagnostic concordance rate and electrocardiogram measurement performance in pediatric patients by collecting ECG signals from patch-type ECG and Holter device simultaneously for data analysis.
More than 29 days old and less than 19 years old
Patients who are need regular Holter electrocardiography among outpatients or hospitalized patients at the Pediatrics, Samsung Medical Center
Those who gave written consent to this clinical study or obtained the written consent of the legal representative
Patients who cannot give consent through the patient ownself or legal representative
If the researcher judges that participation in this study is inappropriate for other reasons