Ventricular Dysrhythmias
Multiple Choice Questions
1. The ventricle pacemaker cells are found at:
A. The bundle of His
B. The AV node
C. The Purkinje fibers
D. The SA node
2. The inherent rate of the Purkinje network is:
A. 20 to 40 beats per minute
B. 40 to 60 beats per minute
C. 60 to 100 beats per minute
D. 100 to 150 beats per minute
3. In all ventricular dysrhythmias, P-P intervals are:
A. Biphasic
B. Missing
C. Regular
D. Irregular
4. QRS complexes that measure 0.12 second or greater with a rate between 20 and 40 beats
per minute indicate that the impulses causing ventricular depolarization are coming from
the:
A. AV node
B. SA node
C. Interatrial pathways
D. Purkinje fibers
,5. Ventricular rhythms occurring within the range of the Purkinje network are referred to as:
A. Junctional escape rhythms
B. Ventricular escape rhythms
C. Asystole rhythms
D. Agonal rhythms
6. Ventricular rhythms occur because:
A. Higher pacemaker sites within the heart have failed
B. The rate of automaticity from this portion of the heart is faster
C. This portion of the heart takes over as the primary pacemaker within the heart D. All of
these
7. Which of the following is a correct statement about premature ventricular complexes
(PVCs)?
A. PVCs will not lead to ventricular tachycardia
B. PVCs may be unifocal or multifocal in origin
C. PVCs only originate from one site in the ventricles
D. All of these
8. Which of the following is caused by an ectopic impulse that occurs early in the cycle and
originates from the ventricles?
A. PAC
B. SVT
C. PVC
D. PJC
9. PVCs can occur due to hypoxic states. What must be done to determine what is causing a
patient's PVCs?
A. Draw blood samples to evaluate a hypoxic state
B. Monitor the heart rate and rhythm carefully
C. Provide the patient with oxygen
D. All of the above
,10. All of the following rhythms usually find the patient requiring immediate emergency
interventions EXCEPT:
A. Asystole
B. Ventricular fibrillation
C. Premature ventricular contractions (PVC)
D. Ventricular tachycardia
11. What are PVCs that occur in varied shapes and forms called?
A. Unifocal
B. Bigeminy
C. Interpolated
D. Multifocal
12. PVCs that have an early complex and have a similar shape, suggesting that only one
irritable focus is present, are called:
A. Coupling PVCs
B. R on T PVCs
C. Unifocal PVCs
D. Interpolated PVCs
13. PVCs that occur during the normal R-R interval without interrupting the normal cycle are
known as: A. Occasional
B. Interpolated
C. Frequent
D. Coupling
14. A PVC that occurs on the T wave or during the vulnerable period of the ventricle
refractory period is called:
A. R on T PVC
B. Bigeminy
C. Trigeminy
, D. T on R PVC
15. Two PVCs back to back are called:
A. Occasional
B. Frequent
C. Coupling
D. Bigeminy
16. More than six to seven PVCs per minute are called:
A. Occasional PVCs
B. Ventricular tachycardia
C. Ventricular fibrillation
D. Frequent PVCs
17. What is the cause of agonal rhythms?
A. Failure of the SA node
B. Failure of all pacemakers of the heart
C. Blocked conduction at the AV node
D. Loose electrode wires
18. Which ventricular dysrhythmia has a heart rate less than 20 beats per minute?
A. Agonal
B. Asystole
C. Idioventricular rhythm
D. Ventricular fibrillation
19. Identify the following rhythm:
A. Bundle branch block
Multiple Choice Questions
1. The ventricle pacemaker cells are found at:
A. The bundle of His
B. The AV node
C. The Purkinje fibers
D. The SA node
2. The inherent rate of the Purkinje network is:
A. 20 to 40 beats per minute
B. 40 to 60 beats per minute
C. 60 to 100 beats per minute
D. 100 to 150 beats per minute
3. In all ventricular dysrhythmias, P-P intervals are:
A. Biphasic
B. Missing
C. Regular
D. Irregular
4. QRS complexes that measure 0.12 second or greater with a rate between 20 and 40 beats
per minute indicate that the impulses causing ventricular depolarization are coming from
the:
A. AV node
B. SA node
C. Interatrial pathways
D. Purkinje fibers
,5. Ventricular rhythms occurring within the range of the Purkinje network are referred to as:
A. Junctional escape rhythms
B. Ventricular escape rhythms
C. Asystole rhythms
D. Agonal rhythms
6. Ventricular rhythms occur because:
A. Higher pacemaker sites within the heart have failed
B. The rate of automaticity from this portion of the heart is faster
C. This portion of the heart takes over as the primary pacemaker within the heart D. All of
these
7. Which of the following is a correct statement about premature ventricular complexes
(PVCs)?
A. PVCs will not lead to ventricular tachycardia
B. PVCs may be unifocal or multifocal in origin
C. PVCs only originate from one site in the ventricles
D. All of these
8. Which of the following is caused by an ectopic impulse that occurs early in the cycle and
originates from the ventricles?
A. PAC
B. SVT
C. PVC
D. PJC
9. PVCs can occur due to hypoxic states. What must be done to determine what is causing a
patient's PVCs?
A. Draw blood samples to evaluate a hypoxic state
B. Monitor the heart rate and rhythm carefully
C. Provide the patient with oxygen
D. All of the above
,10. All of the following rhythms usually find the patient requiring immediate emergency
interventions EXCEPT:
A. Asystole
B. Ventricular fibrillation
C. Premature ventricular contractions (PVC)
D. Ventricular tachycardia
11. What are PVCs that occur in varied shapes and forms called?
A. Unifocal
B. Bigeminy
C. Interpolated
D. Multifocal
12. PVCs that have an early complex and have a similar shape, suggesting that only one
irritable focus is present, are called:
A. Coupling PVCs
B. R on T PVCs
C. Unifocal PVCs
D. Interpolated PVCs
13. PVCs that occur during the normal R-R interval without interrupting the normal cycle are
known as: A. Occasional
B. Interpolated
C. Frequent
D. Coupling
14. A PVC that occurs on the T wave or during the vulnerable period of the ventricle
refractory period is called:
A. R on T PVC
B. Bigeminy
C. Trigeminy
, D. T on R PVC
15. Two PVCs back to back are called:
A. Occasional
B. Frequent
C. Coupling
D. Bigeminy
16. More than six to seven PVCs per minute are called:
A. Occasional PVCs
B. Ventricular tachycardia
C. Ventricular fibrillation
D. Frequent PVCs
17. What is the cause of agonal rhythms?
A. Failure of the SA node
B. Failure of all pacemakers of the heart
C. Blocked conduction at the AV node
D. Loose electrode wires
18. Which ventricular dysrhythmia has a heart rate less than 20 beats per minute?
A. Agonal
B. Asystole
C. Idioventricular rhythm
D. Ventricular fibrillation
19. Identify the following rhythm:
A. Bundle branch block
