Dysrhythmias (NCLEX) ECG Strip Recognition Quiz

1. A patient is found to have a prolonged QT interval. What medication should be avoided?

Aspirin

Metoprolol

Amiodarone

Lisinopril

2. A patient's ECG shows a rhythm that is irregular with a rate of 90 bpm and no visible P waves. What dysrhythmia should be suspected?

Sinus arrhythmia

Atrial fibrillation

Junctional rhythm

Wandering atrial pacemaker

3. Which electrolyte imbalance is most commonly associated with torsades de pointes?

Hyperkalemia

Hypokalemia

Hypercalcemia

Hypocalcemia

4. A patient with atrial fibrillation has a ventricular rate of 140 bpm and is hemodynamically unstable. What is the priority intervention?

Administer digoxin

Prepare for synchronized cardioversion

Start amiodarone infusion

Monitor closely and reassess in 10 minutes

5. In second-degree AV block type II, what ECG finding is characteristic?

Progressive PR prolongation until a beat is dropped

Fixed PR interval with random dropped beats

All P waves are conducted

Complete absence of P waves

6. A patient has a heart rate of 58 bpm with a normal rhythm and normal PR interval. What is the most appropriate nursing action?

Notify the provider immediately

Assess patient symptoms and vital signs

Prepare atropine injection

Start transcutaneous pacing

7. Which dysrhythmia is most likely to deteriorate into ventricular fibrillation?

Sinus bradycardia

Pulseless ventricular tachycardia

Atrial fibrillation

First-degree AV block

8. A patient presents with runs of three or more consecutive PVCs at a rate greater than 100 bpm. What is this called?

Bigeminy

Trigeminy

Ventricular tachycardia

Multifocal PVCs

9. A premature ventricular contraction (PVC) occurs early and is followed by a compensatory pause. What causes this pause?

Depolarization of the sinus node

The sinus node is reset by the PVC

AV block occurs after the PVC

The ventricle is refractory

10. What is the expected ventricular response rate in atrial flutter with a 2:1 conduction ratio?

60-80 bpm

80-100 bpm

120-150 bpm

180-200 bpm

11. A patient's monitor shows a regular rhythm with a rate of 45 bpm and a normal QRS complex. What dysrhythmia is this?

Sinus bradycardia

Atrial fibrillation

Ventricular tachycardia

Premature atrial contraction

12. Which medication is the first-line treatment for stable supraventricular tachycardia?

Epinephrine

Adenosine

Procainamide

Amiodarone

13. A patient's ECG shows a short PR interval and a delta wave. What condition does this represent?

Wolff-Parkinson-White syndrome

Long QT syndrome

Brugada syndrome

Short QT syndrome

14. Which dysrhythmia would produce a QRS duration of 0.16 seconds or greater?

Atrial fibrillation

Ventricular tachycardia

Supraventricular tachycardia

Sinus tachycardia

15. A patient in complete heart block has a ventricular rate of 30 bpm. What is the appropriate nursing intervention?

Administer atropine IV

Prepare for temporary pacemaker insertion

Start dopamine infusion

All of the above are appropriate

16. A patient has a PR interval of 0.24 seconds on the ECG. What conduction abnormality does this indicate?

First-degree AV block

Second-degree AV block type I

Second-degree AV block type II

Third-degree AV block

17. Which ECG finding is characteristic of atrial flutter?

Sawtooth P waves

Fibrillatory waves

Delta waves

U waves

18. A patient presents with a regular rhythm and a rate of 160 bpm. The QRS complex is wide and bizarre. What is the most likely diagnosis?

Atrial tachycardia

Ventricular tachycardia

Supraventricular tachycardia

Sinus tachycardia

19. Which dysrhythmia is characterized by an irregular rhythm with no discernible P waves and a rapid ventricular rate of 120-180 bpm?

Atrial flutter

Atrial fibrillation

Supraventricular tachycardia

Sinus tachycardia

Dysrhythmia Quiz: Can You Read the Strip?

1. A patient is found to have a prolonged QT interval. What medication should be avoided?

2.

What first name or nickname would you like us to use?

2. A patient's ECG shows a rhythm that is irregular with a rate of 90 bpm and no visible P waves. What dysrhythmia should be suspected?

3. Which electrolyte imbalance is most commonly associated with torsades de pointes?

4. A patient with atrial fibrillation has a ventricular rate of 140 bpm and is hemodynamically unstable. What is the priority intervention?

5. In second-degree AV block type II, what ECG finding is characteristic?

6. A patient has a heart rate of 58 bpm with a normal rhythm and normal PR interval. What is the most appropriate nursing action?

7. Which dysrhythmia is most likely to deteriorate into ventricular fibrillation?

8. A patient presents with runs of three or more consecutive PVCs at a rate greater than 100 bpm. What is this called?

9. A premature ventricular contraction (PVC) occurs early and is followed by a compensatory pause. What causes this pause?

10. What is the expected ventricular response rate in atrial flutter with a 2:1 conduction ratio?

11. A patient's monitor shows a regular rhythm with a rate of 45 bpm and a normal QRS complex. What dysrhythmia is this?

12. Which medication is the first-line treatment for stable supraventricular tachycardia?

13. A patient's ECG shows a short PR interval and a delta wave. What condition does this represent?

14. Which dysrhythmia would produce a QRS duration of 0.16 seconds or greater?

15. A patient in complete heart block has a ventricular rate of 30 bpm. What is the appropriate nursing intervention?

16. A patient has a PR interval of 0.24 seconds on the ECG. What conduction abnormality does this indicate?

17. Which ECG finding is characteristic of atrial flutter?

18. A patient presents with a regular rhythm and a rate of 160 bpm. The QRS complex is wide and bizarre. What is the most likely diagnosis?

19. Which dysrhythmia is characterized by an irregular rhythm with no discernible P waves and a rapid ventricular rate of 120-180 bpm?