A Holter monitor is a portable device used to measure and record the heart's activity continuously for 24 to 48 hours. It is used to pick up irregularities in the heart rhythm that an ECG missed. Arrhythmias of the heart can be diagnosed using a Holter monitor.
A Racing Heart - Palpitation Explained
Heart palpitation is the feeling of your heart pounding or beating too fast or fluttering. Learn about its possible causes, diagnosis, and treatment.

Holter Monitor - A Comprehensive Guide to 24-Hour Cardiac Monitoring
A Holter monitor is a movable electrocardiogram that continuously records the electrical activity of the heart. Continue reading to know more.