heart and blood vessel disorders
Sinus Node Dysfunction
Diagnosis of Sinus Node Dysfunction
Electrocardiography A slow pulse (especially an irregular one), a pulse that varies greatly without any change in the person’s activity, or a pulse that does not increase during exercise suggests sinus node dysfunction. Doctors can usually diagnose sinus node dysfunction based on symptoms and the results of Electrocardiography (ECG), particularly when heart rhythm is recorded continuously at home over a 24 or 48-hour period using a 