A hand-held single-channel ECG (electrocardiogram) is a compact, portable device designed for the quick and convenient monitoring of a patient's heart electrical activity. It captures a single lead of the ECG, making it suitable for preliminary assessments, home monitoring, or use in settings where full multi-lead ECG machines may not be practical.hand-held single-channel ECG is a valuable tool for the rapid assessment and monitoring of cardiac health. Its portability and ease of use make it an essential device in various healthcare settings, particularly for preliminary evaluations and home monitoring of patients with heart conditions.