Cardiac Services 24 hour Ambulatory Blood Pressure Monitor (ABPM) Enter description text here. Agitated Saline Bubble Echocardiogram Enter description text here. Echocardiogram (Echo) Viewing the heart with high frequency sound waves Electrocardiogram Enter description text here. Exercise Stress Echocardiography Viewing the heart with sound waves during exercise Exercise Stress Test Viewing the heart with sound waves during exercise Holter Monitor Recording the electrical impulses of your heartbeat