Deck 11: Introducing the Heart Block Rhythms

Question 1

This rhythm has a complete block at or below the AV node and there is no relationship between the P waves and the QRS complex.

A) First degree
B) Second degree type I
C) Second degree type II
D) Third degree

Answer 1

D

Question 2

This rhythm is not a true block; there is a delay at the AV node,and each impulse is eventually conducted.

A) First degree
B) Second degree type I
C) Second degree type II
D) Third degree

Answer 2

A

Question 3

Wenckebach differs from complete heart block in that complete heart block usually has:

A) a constant PR interval.
B) a regular R to R interval.
C) a faster rate.
D) no QRS.

Answer 3

B

Question 4

The rhythm that occurs when there is an intermittent interruption in the electrical conduction system near or below the AV Junction is:

A) third-degree block.
B) second-degree block type II.
C) first-degree block.
D) second-degree block type I.

Question 5

This rhythm has a PR interval that gets progressively longer until a P wave fails to conduct,resulting in a dropped QRS complex.

A) First degree
B) Second degree type I
C) Second degree type II
D) Third degree

Question 6

Which of the following blocks is most often irregular?

A) First degree
B) Second degree type II
C) Third degree
D) All of the above

Question 7

An EKG rhythm that has no correlation between the P waves and the QRS complexes is:

A) second-degree block type II.
B) first-degree block.
C) second-degree block type I.
D) third-degree block.

Question 8

The most usual form of block results from excessive conduction delay in the AV node and is termed:

A) third-degree block.
B) second-degree block type I.
C) second-degree block type II.
D) first-degree block.

Question 9

Heart blocks are:

A) a shifting of the pacemaker site between the SA node,atria,and/or AV junction.
B) partial delay or complete interruptions in the cardiac conduction pathway between the atria and ventricles.
C) the result of accessory conduction pathways between the atria and ventricles.
D) early ectopic beats that originate outside the SA node.

Question 10

With a second-degree block,type I,the PR intervals:

A) get progressively shorter.
B) are all the same at 0.20.
C) get progressively longer.
D) are all inverted.

Question 11

Second-degree block is also known as:

A) Mobitz type 5.
B) Mobitz type 4.
C) Mobitz type 3.
D) Mobitz type 1.

Question 12

The other characteristic in second-degree type I block is that the impulse is not conducted and the ________ is dropped.

A) QRS
B) ST
C) PVC
D) AED

Question 13

The PR interval in Mobitz type II is constant,or regular,for every conducted beat.

Question 14

With first-degree AV block:

A) the PR intervals are less than 0.20 seconds.
B) the PR intervals are greater than 0.20 seconds.
C) the P waves are inverted.
D) not all the P waves are followed by a QRS.

Question 15

AV dissociation is associated with the ________ degree block.

A) fourth-
B) first-
C) second-
D) third-

Question 16

The second-degree type I heart block is also known as the:

A) Wenckebach phenomenon.
B) Beasley phenomenon.
C) His phenomenon.
D) Purkinje phenomenon.

Question 17

All the parameters with a first-degree block are within normal limits EXCEPT:

A) QRS interval.
B) rhythm.
C) heart rate.
D) PR interval.

Question 18

A Mobitz type II may present as the appearance of two P waves per QRS,three P waves per QRS,or four P waves per QRS.

Question 19

The second-degree block,type II,represents a complete block of:

A) the AV node as well as a partial block of the SA node.
B) all of the intranodal pathways and the AV node.
C) both of the bundle branches and partial block of the bundle of His.
D) one of the bundle branches and a partial block of the other branch.

Question 20

With second-degree block,type II:

A) a QRS complex follows each P wave.
B) the pacemaker site is in the AV junction.
C) the P waves are all inverted.
D) the ventricular rate is less than the atrial rate.

Question 21

The heart block rhythm that most closely resembles a normal sinus rhythm is a:

A) second-degree block,type I.
B) second-degree block,type II.
C) first-degree block.
D) third-degree block.

Question 22

The treatment for a patient with a third-degree block and that is hemodynamically unstable is:

A) defibrillation.
B) transcutaneous pacing.
C) endotracheal intubation.
D) synchronized cardioversion.

Question 23

A prolonged PR interval is the hallmark of ________ degree block and is most commonly the only variation in the EKG strip.

A) first-
B) second-
C) third-
D) fourth-