EKG and Cardiovascular Testing

Question 1

What does the U wave represent?

Answer 1

Not always visible but represents a repolarization of the bundle of HIS and Purkinje Fibers.

Question 2

What does the P-R interval represent?

Answer 2

It represents the time it takes from the beginning of atrial depolarization to the beginning of ventricular depolarization.

Question 3

What does the QT interval represent?

Answer 3

It represents the time it takes from the beginning of ventricular depolarization to the end of ventricular repolarization.

Question 4

What does the ST segment represent?

Answer 4

It represents the time from the end of ventricular depolarization to the beginning of ventricular repolarization.

Question 5

What typically happens when you have a interrupted baseline?

Answer 5

Check to make sure the leads and wires are unplugged or disconnected.

Question 6

What is Tachycardia and Bradycardia?

Answer 6

Tachycardia reflects a heart rate greater than 100/min.

Bradycardia is a normal EKG tracing of heart rate less than 60/min.