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- 1. Multiple ChoiceWhat is the cause of a heart block dysrhythmia?The ectopic focus originates above the ventriclesThe electrical current has difficulty traveling down the normal conduction pathwayThe rhythm originates at the AV junctional tissue, producing retrograde depolarizationAn ectopic beat that originates in the right or left atria
- 2. Multiple ChoiceAn ectopic beat that originates in the right or left atriaThe electrical current is delayed or blocked along normal conduction pathways below the AV junctionThe electrical current is delayed or blocked along normal conduction pathways in the ventriclesThe electrical current is delayed or blocked along normal conduction pathways at or above the AV junctionThe electrical current is delayed or blocked along normal conduction pathways above the SA node
- 3. Multiple Choice
Choose the 3rd degree heart block:
- 4. Multiple Choice
WHICH STRIP IS CONSTANT WITH SINUS RHYTHM WITH FIRST DEGREE AV BLOCK?
A
B
C
D
- 5. Multiple Choice
Which strip in Figure 17 is consistent with Mobitz I second-degree AV block (Wenckebach)?
A
B
C
D
- 6. Multiple Choice
Which strip in Figure 17 is consistent with Mobitz II second-degree AV block?
A
B
C
D
- 7. Multiple Choice
Which strip in Figure 17 is consistent with third-degree AV block?
A
B
C
D
- 8. Multiple Choice
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
The rhythm in Figure 18 is
Wenckebach.
Mobitz II second-degree AV block.
third-degree AV block.
junctional bradycardia.
- 10. Multiple Choice
In Figure 18, which of the heart's pacemakers is controlling the ventricle?
sinus node
atrium
AV node
ventricle
- 11. Multiple Choice
Treatment for first-degree AV block involves
atropine
digitalis
electrical shock to the heart
removing the cause
- 12. Multiple Choice
Treatment for third-degree AV block usually includes
pacemaker
lidocaine
digitalis
amiodarone
- 13. Multiple Choice
All AV blocks are caused by a block at the bundle branches.
true
false
- 14. Multiple Choice
Third-degree AV block is also called Wenckebach.
true
false
- 15. Multiple Choice
In AV blocks, the site of the block is the AV node
true
false
- 16. Multiple Choice
In first-degree AV block, all sinus impulses do get through to the ventricles.
true
false
- 17. Multiple Choice
pacemakers treat ______________?
Mobits II (Classic), and 3rd degree AV Blocks (Complete)
Mobitz I and MobitzII
Only 3rd degree blocks
Only Wenchebachs
- 18. Multiple Choice
Mobitz I can progress to 3rd degree AV block
true
false
- 19. Multiple Choice
The origin of the P waves in AV blocks is the ________
AV node
sinus node
Bundle branches
U wave
- 20. Multiple Choice
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
The AV block that has gradually prolonging PR intervals until a QRS is blocked is ________.
Wenckebach
First degree
3rd degree
- 22. Multiple Choice
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
- Answer choicesTagsAnswer choicesTags