Cardiac Arrhythmias Review Quiz

Explore cardiac rhythm disorders with 15 questions. Identify symptoms, mechanisms, and complications. Challenge your cardiology expertise!

#1

Which of the following is a common symptom of ventricular fibrillation?

Regular heartbeat
Loss of consciousness
Slow pulse rate
Stable blood pressure
#2

What is the most common type of supraventricular tachycardia (SVT)?

Atrial fibrillation
Atrial flutter
Paroxysmal supraventricular tachycardia
Ventricular fibrillation
#3

Which of the following is a common cause of atrial fibrillation?

Hypertension
Hyperthyroidism
Hypoglycemia
Hypokalemia
#4

What is the hallmark of ventricular tachycardia on an ECG?

Regular rhythm
Absence of P waves
Wide QRS complexes
Sawtooth pattern waves
#5

Which of the following arrhythmias is characterized by rapid, uncoordinated contraction of the atria?

Atrial fibrillation
Atrial flutter
Atrial tachycardia
Ventricular fibrillation
#6

Which of the following is NOT a risk factor for developing atrial fibrillation?

High blood pressure
Smoking
Regular exercise
Obesity
#7

What is the mechanism of action of class III antiarrhythmic drugs?

Block sodium channels
Block beta-adrenergic receptors
Prolong repolarization by blocking potassium channels
Block calcium channels
#8

Which ECG finding is characteristic of atrial flutter?

Sawtooth pattern waves (F waves)
Absent P waves
Wide QRS complexes
Irregular rhythm
#9

Which of the following arrhythmias is characterized by a narrow QRS complex and regular rhythm originating from the atria?

Atrial fibrillation
Atrial flutter
Ventricular tachycardia
Sinus bradycardia
#10

What is the typical heart rate range seen in atrial fibrillation?

40-60 bpm
60-100 bpm
100-150 bpm
Above 150 bpm
#11

Which of the following is a potential complication of long-term atrial fibrillation?

Ischemic stroke
Hypertension
Bradycardia
Hypoglycemia
#12

What is the primary mechanism of action of adenosine in treating supraventricular tachycardia?

Inhibition of sodium-potassium ATPase pump
Activation of adrenergic receptors
Blockade of calcium channels
Activation of potassium channels
#13

Which electrolyte abnormality is commonly associated with the development of torsades de pointes?

Hyperkalemia
Hypocalcemia
Hypokalemia
Hypermagnesemia
#14

Which of the following conditions is NOT a common cause of atrioventricular nodal reentrant tachycardia (AVNRT)?

Coronary artery disease
Rheumatic heart disease
Digitalis toxicity
Hypertrophic cardiomyopathy
#15

Which antiarrhythmic drug class is primarily associated with proarrhythmic effects?

Class I
Class II
Class III
Class IV

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