1. The coronary circulation has how many main arteries? a. Two c. Four b. Six d. Eight 2. When interpreting dysrhythmias, the health care provider should remember that the most important key is the:...

1. The coronary circulation has how many main arteries?

a. Two c. Four

b. Six d. Eight

2. When interpreting dysrhythmias, the health care provider should remember that the most important key is the:

a. PR interval

b. Rate and rhythm

c. Presence of dysrhythmias

d. Patient’s clinical appearance

3. A graphic record of the electrical activity of the heart is an:

a. Echocardiogram c. Encephalogram

b. Electrocardiogram d. Radiogram