Question 1

Which laboratory result for a patient with multifocal premature ventricular contractions (PVCs)is most important for the nurse to communicate to the health care provider?

Accepted Answer

A) Blood glucose of 243 mg/dL 
B) Serum chloride of 92 mEq/L 
C) Serum sodium of 134 mEq/L 
D) Serum potassium of 2.9 mEq/L 
A) Blood glucose of 243 mg/dL 
B) Serum chloride of 92 mEq/L 
C) Serum sodium of 134 mEq/L 
D) Serum potassium of 2.9 mEq/L

Question 2

A 19-yr-old student comes to the student health center at the end of the semester complaining that,"My heart is skipping beats." An electrocardiogram (ECG)shows occasional unifocal premature ventricular contractions (PVCs). What action should the nurse take next?

Accepted Answer

A) Insert an IV catheter for emergency use. 
B) Start supplemental O2 at 2 to 3 L/min via nasal cannula. 
C) Ask the patient about current stress level and caffeine use. 
D) Have the patient taken to the nearest emergency department (E
D) . 
A) Insert an IV catheter for emergency use. 
B) Start supplemental O2 at 2 to 3 L/min via nasal cannula. 
C) Ask the patient about current stress level and caffeine use. 
D) Have the patient taken to the nearest emergency department (E
D) .

Question 3

A patient's heart monitor shows sinus rhythm,rate 64. The PR interval is 0.18 seconds at 1:00 AM,0.22 seconds at 2:30 PM,and 0.28 seconds at 4:00 PM. Which action should the nurse take next?

Accepted Answer

A) Place the transcutaneous pacemaker pads on the patient. 
B) Give atropine sulfate 1 mg IV per agency dysrhythmia protocol. 
C) Call the health care provider before giving scheduled metoprolol (Lopressor). 
D) Document the patient's rhythm and assess the patient's response to the rhythm. 
A) Place the transcutaneous pacemaker pads on the patient. 
B) Give atropine sulfate 1 mg IV per agency dysrhythmia protocol. 
C) Call the health care provider before giving scheduled metoprolol (Lopressor). 
D) Document the patient's rhythm and assess the patient's response to the rhythm.

Question 4

When analyzing an electrocardiographic (ECG)rhythm strip of a patient with a regular heart rhythm,the nurse counts 30 small blocks from one R wave to the next. The nurse calculates the patient's heart rate as ____.

Accepted Answer

50
There are 1500 sm

Question 5

To determine whether there is a delay in impulse conduction through the ventricles,the nurse will measure the duration of the patient's

Accepted Answer

A) P wave. 
B) Q wave. 
C) PR interval. 
D) QRS complex. 
A) P wave. 
B) Q wave. 
C) PR interval. 
D) QRS complex.

Question 6

A patient has ST segment changes that suggest an acute inferior wall myocardial infarction. Which lead would be best for monitoring the patient?

Accepted Answer

A) I 
B) II 
C) V2 
D) V6 
A) I 
B) II 
C) V2 
D) V6

Question 7

A patient has a sinus rhythm and a heart rate of 72 beats/min. The nurse determines that the PR interval is 0.24 seconds. The most appropriate intervention by the nurse would be to

Accepted Answer

A) notify the health care provider immediately. 
B) document the finding and monitor the patient. 
C) give atropine per agency dysrhythmia protocol. 
D) prepare the patient for temporary pacemaker insertion. 
A) notify the health care provider immediately. 
B) document the finding and monitor the patient. 
C) give atropine per agency dysrhythmia protocol. 
D) prepare the patient for temporary pacemaker insertion.

Question 8

The nurse notes that a patient's heart monitor shows that every other beat is earlier than expected,has no visible P wave,and has a QRS complex that is wide and bizarre in shape. How will the nurse document the rhythm?

Accepted Answer

A) Ventricular couplets 
B) Ventricular bigeminy 
C) Ventricular R-on-T phenomenon 
D) Multifocal premature ventricular contractions 
A) Ventricular couplets 
B) Ventricular bigeminy 
C) Ventricular R-on-T phenomenon 
D) Multifocal premature ventricular contractions

Question 9

When analyzing the rhythm of a patient's electrocardiogram (ECG),the nurse will need to investigate further upon finding a(n)

Accepted Answer

A) isoelectric ST segment. 
B) PR interval of 0.18 second. 
C) QT interval of 0.38 second. 
D) QRS interval of 0.14 second. 
A) isoelectric ST segment. 
B) PR interval of 0.18 second. 
C) QT interval of 0.38 second. 
D) QRS interval of 0.14 second.

Question 10

The nurse obtains a rhythm strip on a patient who has had a myocardial infarction and makes the following analysis: no visible P waves,PR interval not measurable,ventricular rate of 162,R-R interval regular,and QRS complex wide and distorted,and QRS duration of 0.18 second. The nurse interprets the patient's cardiac rhythm as

Accepted Answer

A) atrial flutter. 
B) sinus tachycardia. 
C) ventricular fibrillation. 
D) ventricular tachycardia. 
A) atrial flutter. 
B) sinus tachycardia. 
C) ventricular fibrillation. 
D) ventricular tachycardia.

Question 11

Which information will the nurse include when teaching a patient who is scheduled for a radiofrequency catheter ablation for treatment of atrial flutter?

Accepted Answer

A) The procedure prevents or minimizes the risk for sudden cardiac death. 
B) The procedure uses cold therapy to stop the formation of the flutter waves. 
C) The procedure uses electrical energy to destroy areas of the conduction system. 
D) The procedure stimulates the growth of new conduction pathways between the atria. 
A) The procedure prevents or minimizes the risk for sudden cardiac death. 
B) The procedure uses cold therapy to stop the formation of the flutter waves. 
C) The procedure uses electrical energy to destroy areas of the conduction system. 
D) The procedure stimulates the growth of new conduction pathways between the atria.

Exam 35: Dysrhythmias

Which laboratory result for a patient with multifocal premature ventricular contractions (PVCs)is most important for the nurse to communicate to the health care provider?

A 19-yr-old student comes to the student health center at the end of the semester complaining that,"My heart is skipping beats." An electrocardiogram (ECG)shows occasional unifocal premature ventricular contractions (PVCs). What action should the nurse take next?

A patient's heart monitor shows sinus rhythm,rate 64. The PR interval is 0.18 seconds at 1:00 AM,0.22 seconds at 2:30 PM,and 0.28 seconds at 4:00 PM. Which action should the nurse take next?

When analyzing an electrocardiographic (ECG)rhythm strip of a patient with a regular heart rhythm,the nurse counts 30 small blocks from one R wave to the next. The nurse calculates the patient's heart rate as ____.

To determine whether there is a delay in impulse conduction through the ventricles,the nurse will measure the duration of the patient's

A patient has ST segment changes that suggest an acute inferior wall myocardial infarction. Which lead would be best for monitoring the patient?

A patient has a sinus rhythm and a heart rate of 72 beats/min. The nurse determines that the PR interval is 0.24 seconds. The most appropriate intervention by the nurse would be to

The nurse notes that a patient's heart monitor shows that every other beat is earlier than expected,has no visible P wave,and has a QRS complex that is wide and bizarre in shape. How will the nurse document the rhythm?

When analyzing the rhythm of a patient's electrocardiogram (ECG),the nurse will need to investigate further upon finding a(n)

Which information will the nurse include when teaching a patient who is scheduled for a radiofrequency catheter ablation for treatment of atrial flutter?

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