EP 101

EP Quiz

Linda Moulton, RN, MS
Owner, Critical Care ED and C.C.E. Consulting,
Faculty, Order and Disorder Electrophysiology Training Program
New Berlin, Illinois

Linda Moulton, RN, MS
Owner, Critical Care ED and C.C.E. Consulting,
Faculty, Order and Disorder Electrophysiology Training Program
New Berlin, Illinois

Ready to test your basic EP knowledge?
Take this brief quiz!

Question #1: Which of the following is true about the fossa ovalis?

a. It is an embryologic remnant that may be responsible for the initiation of atrial fibrillation.

b. It was the foramen ovale prior to birth.

c. It is also called the crista terminalis.

d. It forms a portion of the Triangle of Koch.

Question #2: Where does the bundle of His divide into?

a. The posteroinferior division of the left bundle branch.

b. The anterosuperior division of the left bundle branch.

c. The right bundle branch.

d. All of the above.

Question #3: What does the level of threshold potential determine?

a. How easily an impulse is able to excite a cell.

b. The level of magnesium required to successfully cause depolarization.

c. The type of antiarrhythmic drug required to suppress ventricular rhythms.

d. How many phases are present in an action potential for repolarization to occur.

Question #4: What occurs during phase 1 of the action potential?

a. Potassium exits the cell via the transient outward current IK to.

b. The action of the slow inward calcium current occurs.

c. Sodium enters the cell.

d. Potassium enters the cell.

Question #5: What does refractoriness refer to?

a. A state of cell contractility.

b. A state of cell inexcitability.

c. Conductivity.

d. None of the above.

Question #6: The following EKG shows: 

Question #6 EKG

a. Right bundle branch block.

b. Right axis deviation.

c. Left anterior hemiblock.

d. Left bundle branch block.

 

Question #7: Ventricular activation time is measured:

a. From the beginning of the Q wave to the end of the S.

b. From the beginning of the QRS to the end of the T wave.

c. From the beginning of the QRS to the onset of the intrinsicoid deflection.

d. From the beginning of the P wave to the beginning of the QRS.

Question #8: What of the following is true about the left atrial appendage?

a. It is an area of stagnant blood flow where clots are known to form.

b. It is the region where the pulmonary veins insert.

c. None of the above.

d. a and b.

Question #9: A blockage of one of the divisions of the left bundle branch is called:

a. A hemiblock.

b. Altered automaticity.

c. Reentry.

d. AV block.

Question #10: Components of the interventricular conduction system include:

a. The bundle of His, Bachmann’s bundle, and the AV node.

b. The slow and fast AV nodal pathways, the bundle of His, and the Purkinje fibers.

c. The bundle of His, the right and left bundle branches, and the Purkinje fibers.

d. The bundle of His, the right bundle branch, and the Purkinje fibers.

Answer Key

1. (b) It was the foramen ovale prior to birth.

2. (d) All of the above.

3. (a) How easily an impulse is able to excite a cell.

4. (a) Potassium exits the cell via the transient outward current IK to.

5. (b) A state of cell inexcitability.

6. (a) Right bundle branch block.

7. (c) From the beginning of the QRS to the onset of the intrinsicoid deflection.

8. (d) a and b.

9. (a) A hemiblock.

10. (c) The bundle of His, the right and left bundle branches, and the Purkinje fibers.

 

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