Dysrhythmias Practice Q's
1. 100. In analyzing a patient's electrocardiogram (ECG) rhythm strip, the nurse uses
the knowledge that the time of the conduction of an impulse through the Purkinje
fibres is represented by which of the following changes?
a. P wave
b. PR interval
c. QT interval
d. QRS complex Ans: B
2. 101. Which of the following is an abnormal ECG value for a PR interval
duration?
a. 0.6 second
b. 0.12 second
c. 0.24 second
d. 0.30 second Ans: B
3. 102. A patient has a sinus arrest with a junctional escape rhythm. What would
the nurse expect the patient's pulse rate to be?
a. 15 to 20 beats/min
b. 20 to 40 beats/min
c. 40 to 60 beats/min
d. 60 to 100 beats/min Ans: C
4. 103. A patient who is complaining of a "racing" heart and nervousness comes to
the emergency department. The patient's blood pressure (BP) is 102/68 mm Hg.The
nurse places the patient on a cardiac monitor and obtains the following ECG tracing
Ans:
,Which action should the nurse take next?
a. Have the patient perform the Valsalva manoeuvre.
b. Prepare to administer -blocker medication to slow the heart rate.
c. Get ready to perform electrical cardioversion.
d. Obtain further information about possible causes for the heart rate Ans: D
ANS Ans: D
The patient has sinus tachycardia, which can be caused by multiple stressors such as pain,
dehydration, or myocardial ischemia. Further assessment is needed before determining the
treatment
5. 104. A patient has a dysrhythmia that requires careful monitoring of atrial
activity. Which lead will be best to use for continuous monitoring?
a. MCL1
b. AVF
c. V6
d. I Ans: A
, 6. 105. The nurse obtains a monitor strip on a patient admitted to the coronary care
unit with a myocardial infarction (MI) and makes the following analysis Ans: P
wave not apparent; ventricular rate 142 beats/min, R-R interval regular; PR interval
not measurable; and QRS complex wide and distorted, greater than
0.14 second.The nurse interprets this patient's cardiac rhythm as which of the following
a. Atrial fibrillation
b. Sinus tachycardia
c. Ventricular fibrillation
d. Ventricular tachycardia Ans: D
7. 106. The nurse determines that a patient has ventricular bigeminy when the rhythm
strip indicates which of the following changes?
a. Conduction is originating in the AV node.
b. Every other QRS complex is wide and starts prematurely.
c. The ventricular rate is between 150 and 250 beats/min.
d. The rhythm of the SA node is coupled with long pauses between every two beats.
Ans: B
8. 107. A patient has a normal cardiac rhythm strip, except that the PR interval is 0.34
seconds. What is the appropriate nursing intervention?
a. Notify the physician.
b. Administer atropine per protocol.
c. Prepare the patient for temporary pacemaker insertion.
d. Document the finding, and continue to monitor the patient Ans: D
9. 108. A patient with diabetes mellitus is admitted unresponsive to the emer- gency
department (ED). Initial laboratory findings are serum potassium 2.8 mmol/L, serum
sodium 138 mmol/L, serum chloride 90 mmol/L, and blood glucose 34.9 mmol/L (628
1. 100. In analyzing a patient's electrocardiogram (ECG) rhythm strip, the nurse uses
the knowledge that the time of the conduction of an impulse through the Purkinje
fibres is represented by which of the following changes?
a. P wave
b. PR interval
c. QT interval
d. QRS complex Ans: B
2. 101. Which of the following is an abnormal ECG value for a PR interval
duration?
a. 0.6 second
b. 0.12 second
c. 0.24 second
d. 0.30 second Ans: B
3. 102. A patient has a sinus arrest with a junctional escape rhythm. What would
the nurse expect the patient's pulse rate to be?
a. 15 to 20 beats/min
b. 20 to 40 beats/min
c. 40 to 60 beats/min
d. 60 to 100 beats/min Ans: C
4. 103. A patient who is complaining of a "racing" heart and nervousness comes to
the emergency department. The patient's blood pressure (BP) is 102/68 mm Hg.The
nurse places the patient on a cardiac monitor and obtains the following ECG tracing
Ans:
,Which action should the nurse take next?
a. Have the patient perform the Valsalva manoeuvre.
b. Prepare to administer -blocker medication to slow the heart rate.
c. Get ready to perform electrical cardioversion.
d. Obtain further information about possible causes for the heart rate Ans: D
ANS Ans: D
The patient has sinus tachycardia, which can be caused by multiple stressors such as pain,
dehydration, or myocardial ischemia. Further assessment is needed before determining the
treatment
5. 104. A patient has a dysrhythmia that requires careful monitoring of atrial
activity. Which lead will be best to use for continuous monitoring?
a. MCL1
b. AVF
c. V6
d. I Ans: A
, 6. 105. The nurse obtains a monitor strip on a patient admitted to the coronary care
unit with a myocardial infarction (MI) and makes the following analysis Ans: P
wave not apparent; ventricular rate 142 beats/min, R-R interval regular; PR interval
not measurable; and QRS complex wide and distorted, greater than
0.14 second.The nurse interprets this patient's cardiac rhythm as which of the following
a. Atrial fibrillation
b. Sinus tachycardia
c. Ventricular fibrillation
d. Ventricular tachycardia Ans: D
7. 106. The nurse determines that a patient has ventricular bigeminy when the rhythm
strip indicates which of the following changes?
a. Conduction is originating in the AV node.
b. Every other QRS complex is wide and starts prematurely.
c. The ventricular rate is between 150 and 250 beats/min.
d. The rhythm of the SA node is coupled with long pauses between every two beats.
Ans: B
8. 107. A patient has a normal cardiac rhythm strip, except that the PR interval is 0.34
seconds. What is the appropriate nursing intervention?
a. Notify the physician.
b. Administer atropine per protocol.
c. Prepare the patient for temporary pacemaker insertion.
d. Document the finding, and continue to monitor the patient Ans: D
9. 108. A patient with diabetes mellitus is admitted unresponsive to the emer- gency
department (ED). Initial laboratory findings are serum potassium 2.8 mmol/L, serum
sodium 138 mmol/L, serum chloride 90 mmol/L, and blood glucose 34.9 mmol/L (628
