Dysrhythmia Quiz: Can You Read the Abnormal Rhythm?

1. What is the primary mechanism responsible for atrial fibrillation?

Abnormal automaticity and reentry in atrial tissue

Complete AV node blockade

Increased parasympathetic tone

Structural valve disease only

2. Which ECG finding is characteristic of a second-degree AV block, Mobitz II?

Progressive PR prolongation followed by dropped beat

Sudden dropped beat without PR prolongation

Regular rhythm with fixed PR interval

Absent P waves throughout

3. A patient presents with a heart rate of 180 bpm and narrow QRS complexes. What is the most likely diagnosis?

Ventricular tachycardia

Supraventricular tachycardia

Atrial flutter with slow conduction

Sinus tachycardia

4. In ventricular fibrillation, what is the immediate treatment priority?

Administer antiarrhythmic medications

Defibrillation and CPR

Synchronized cardioversion

Pacing

5. What does a prolonged QT interval indicate?

Delayed ventricular repolarization

Accelerated atrial depolarization

AV conduction delay

Normal ventricular function

6. Which medication is first-line for acute rate control in atrial fibrillation with rapid ventricular response?

Amiodarone

Beta-blockers or calcium channel blockers

Digoxin

Procainamide

Submit

9. Which dysrhythmia is characterized by a sawtooth pattern on ECG?

Atrial flutter

Atrial fibrillation

Ventricular flutter

Sinus arrhythmia

Submit

11. Which of the following increases the risk of atrial fibrillation?

Hypertension, heart disease, and hyperthyroidism

Low potassium levels only

Young age

Regular exercise

Submit

13. What is the primary hemodynamic consequence of a rapid ventricular rate in atrial fibrillation?

Increased cardiac output

Decreased diastolic filling and reduced cardiac output

Improved coronary perfusion

No significant change in perfusion

14. Synchronized cardioversion is used for which dysrhythmia?

Ventricular fibrillation

Atrial fibrillation with hemodynamic instability

Asystole

Pulseless electrical activity

Submit

Dysrhythmia Quiz: Can You Read the Abnormal Rhythm?

1. What is the primary mechanism responsible for atrial fibrillation?

2.

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

2. Which ECG finding is characteristic of a second-degree AV block, Mobitz II?

3. A patient presents with a heart rate of 180 bpm and narrow QRS complexes. What is the most likely diagnosis?

4. In ventricular fibrillation, what is the immediate treatment priority?

5. What does a prolonged QT interval indicate?

6. Which medication is first-line for acute rate control in atrial fibrillation with rapid ventricular response?

7. A patient with premature ventricular contractions (PVCs) shows a compensatory pause. This means the next sinus beat occurs ____.

8. In Wolff-Parkinson-White syndrome, the abnormal pathway is called the ____.

9. Which dysrhythmia is characterized by a sawtooth pattern on ECG?

10. A complete heart block results in independent beating of the atria and ventricles. This is also called ____.

11. Which of the following increases the risk of atrial fibrillation?

12. In torsades de pointes, the QRS complexes appear to twist around an imaginary axis. This rhythm is most commonly triggered by ____.

13. What is the primary hemodynamic consequence of a rapid ventricular rate in atrial fibrillation?

14. Synchronized cardioversion is used for which dysrhythmia?

15. A narrow QRS complex dysrhythmia with a regular rhythm and no visible P waves is most likely ____.