Exam 1

Question 1

The P wave on an ECG represents what?

Answer 1

Atrial depolarization

Question 2

The P-R interval on an ECG represents what?

Answer 2

Atrial activity + transmission through the AV node

Question 3

What does the QRS complex represent?

Answer 3

Ventricular depolarization

Question 4

What does the T wave represent?

Answer 4

Ventricular repolarization

Question 5

If an animal is hyperkalemic, what ECG changes will you see?

Answer 5

1. Bradycardia first
2. Disappearance of P waves
3. T waves become tall and peaked
4. QRS’s become wide and bizarre
5. Animal dies

Question 6

What are 5 potential causes of hyperkalemia?

Answer 6

1. Addisons
2. Renal insufficiency
3. Potassium sparing diuretics
4. Ace inhibitors
5. Blocked tom cat