Chapter 8 Heart blocks

1.

Multiple Choice

30 sec

1 pt

What is the cause of a heart block dysrhythmia?

The ectopic focus originates above the ventricles

The electrical current has difficulty traveling down the normal conduction pathway

The rhythm originates at the AV junctional tissue, producing retrograde depolarization

An ectopic beat that originates in the right or left atria

2.

Multiple Choice

30 sec

1 pt

An ectopic beat that originates in the right or left atria

The electrical current is delayed or blocked along normal conduction pathways below the AV junction

The electrical current is delayed or blocked along normal conduction pathways in the ventricles

The electrical current is delayed or blocked along normal conduction pathways at or above the AV junction

The electrical current is delayed or blocked along normal conduction pathways above the SA node

3.

Multiple Choice

30 sec

1 pt

Choose the 3rd degree heart block:

4.

Multiple Choice

30 sec

1 pt

WHICH STRIP IS CONSTANT WITH SINUS RHYTHM WITH FIRST DEGREE AV BLOCK?

A

B

C

D

5.

Multiple Choice

30 sec

1 pt

Which strip in Figure 17 is consistent with Mobitz I second-degree AV block (Wenckebach)?

A

B

C

D

6.

Multiple Choice

30 sec

1 pt

Which strip in Figure 17 is consistent with Mobitz II second-degree AV block?

A

B

C

D

7.

Multiple Choice

30 sec

1 pt

Which strip in Figure 17 is consistent with third-degree AV block?

A

B

C

D

8.

Multiple Choice

30 sec

1 pt

AV dissociation is a hallmark of

first-degree AV block.

Mobitz I second-degree AV block (Wenckebach).

Mobitz II second-degree AV block.

third-degree AV block.

9.

Multiple Choice

30 sec

1 pt

The rhythm in Figure 18 is

Wenckebach.

Mobitz II second-degree AV block.

third-degree AV block.

junctional bradycardia.

10.

Multiple Choice

30 sec

1 pt

In Figure 18, which of the heart's pacemakers is controlling the ventricle?

sinus node

atrium

AV node

ventricle

11.

Multiple Choice

30 sec

1 pt

Treatment for first-degree AV block involves

atropine

digitalis

electrical shock to the heart

removing the cause

12.

Multiple Choice

30 sec

1 pt

Treatment for third-degree AV block usually includes

pacemaker

lidocaine

digitalis

amiodarone

13.

Multiple Choice

30 sec

1 pt

All AV blocks are caused by a block at the bundle branches.

true

false

14.

Multiple Choice

30 sec

1 pt

Third-degree AV block is also called Wenckebach.

true

false

15.

Multiple Choice

30 sec

1 pt

In AV blocks, the site of the block is the AV node

true

false

16.

Multiple Choice

30 sec

1 pt

In first-degree AV block, all sinus impulses do get through to the ventricles.

true

false

17.

Multiple Choice

30 sec

1 pt

pacemakers treat ______________?

Mobits II (Classic), and 3rd degree AV Blocks (Complete)

Mobitz I and MobitzII

Only 3rd degree blocks

Only Wenchebachs

18.

Multiple Choice

30 sec

1 pt

Mobitz I can progress to 3rd degree AV block

true

false

19.

Multiple Choice

30 sec

1 pt

The origin of the P waves in AV blocks is the ________

AV node

sinus node

Bundle branches

U wave

20.

Multiple Choice

30 sec

1 pt

Why would atropine not be an appropriate treatment for a block in the bundle branches?

Atropine works on the sinus node and AV node not the bundle branches

Atropine is an appropriate treatment

Atropine only works on the SA node

Atropine only works on the AV node

21.

Multiple Choice

30 sec

1 pt

The AV block that has gradually prolonging PR intervals until a QRS is blocked is ________.

Wenckebach

First degree

3rd degree

22.

Multiple Choice

30 sec

1 pt

In ______________________ all sinus impulses get through to the ventricles.

first degree AV block

3rd degree AV block

2nd degree Mobitz I

2nd degree Mobitz II

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