Cardiac Studies

Cardiac (heart) examinations are being performed at 2 visits over the 3 year study. Echocardiography and electrocardiography are administered at these visits.

An echocardiogram, also called a cardiac echo, uses sound waves (ultrasound) to produce images of participants hearts. This commonly used test allows doctors to see how the heart is beating and pumping blood, as well as detect if there are any abnormalities in the heart muscle and valves. 

An electrocardiogram, also called an ECG, is a simple, painless test that records the heart's electrical activity.  ECG is used to measure the rate and regularity of heartbeats, the size and position of the chambers, as well as the presence of any damage to the heart.