Diagnosing SA node dysfunction typically involves:
Electrocardiogram (ECG): A non-invasive test that records the electrical activity of the heart. Holter Monitor: A portable device worn for 24-48 hours to continuously monitor heart activity. Event Recorder: Similar to a Holter monitor but used for longer periods, up to a month. Electrophysiological Study (EPS): An invasive test that maps the electrical pathways of the heart.
