Atrioventricular (AV) Blocks and Associated Dysrhythmias Quiz

Test your knowledge on atrioventricular blocks and associated dysrhythmias. Explore causes, ECG findings, complications & treatments.

#1

Which of the following is a common cause of first-degree atrioventricular (AV) block?

Myocardial infarction
Hypokalemia
Atrial fibrillation
Heart failure
#2

What is Mobitz type I atrioventricular (AV) block commonly referred to as?

Wenckebach phenomenon
Lown-Ganong-Levine syndrome
Bundle branch block
Ashman phenomenon
#3

Which medication is commonly used to treat atrioventricular (AV) blocks by increasing heart rate?

Atropine
Aspirin
Lisinopril
Warfarin
#4

Which of the following terms is used to describe a temporary cessation of cardiac electrical activity in a patient with atrioventricular (AV) block?

Atrial fibrillation
Cardiac arrest
Pulseless ventricular tachycardia
Supraventricular tachycardia
#5

Which term is used to describe the phenomenon where there is a consistent ratio of P waves to QRS complexes in second-degree Mobitz type II atrioventricular (AV) block?

3:1 block
2:1 block
Wenckebach phenomenon
1:1 block
#6

In second-degree atrioventricular (AV) block, what happens to the conducted impulses?

They are delayed but all reach the ventricles
They are completely blocked
They skip every other beat
They cause rapid ventricular contractions
#7

Which ECG finding is characteristic of third-degree atrioventricular (AV) block?

Prolonged PR interval
Normal PR interval but irregular QRS complexes
Complete dissociation between P waves and QRS complexes
Absence of P waves
#8

Which of the following is a potential cause of high-degree atrioventricular (AV) block in a young, healthy individual?

Myocardial infarction
Hypertension
Lyme disease
Chronic obstructive pulmonary disease (COPD)
#9

What is the primary concern in a patient with complete heart block (third-degree atrioventricular (AV) block)?

Atrial fibrillation
Bradycardia and potential hemodynamic compromise
Ventricular tachycardia
Prolonged QT interval
#10

What is the most common cause of acquired third-degree atrioventricular (AV) block?

Congenital heart defect
Hyperthyroidism
Hypertension
Ischemic heart disease
#11

Which term describes the phenomenon where a P wave is not followed by a QRS complex in the electrocardiogram (ECG) due to complete heart block?

Atrial fibrillation
Atrial flutter
Pulseless electrical activity
Dropped beat
#12

What is a potential complication associated with high-degree atrioventricular (AV) block?

Hypertension
Heart palpitations
Syncope or sudden cardiac arrest
Hyperthyroidism
#13

Which of the following medications may be used to manage symptomatic bradycardia in patients with atrioventricular (AV) block?

Digoxin
Epinephrine
Amiodarone
Metoprolol
#14

Which electrocardiogram (ECG) finding is characteristic of Mobitz type II atrioventricular (AV) block?

Progressively lengthening PR interval
Prolonged QT interval
Consistently prolonged PR interval
Sudden block of a conducted impulse without PR interval changes
#15

In patients with atrioventricular (AV) block, what is the role of a temporary pacemaker?

To maintain sinus rhythm
To permanently correct the conduction abnormality
To temporarily support the heart's electrical activity
To reduce blood pressure
#16

What is the primary goal of treatment in a patient with symptomatic second-degree Mobitz type II atrioventricular (AV) block?

Administer antiarrhythmic medications
Insert a permanent pacemaker
Perform catheter ablation
Initiate anticoagulation therapy
#17

Which electrolyte imbalance is commonly associated with atrioventricular (AV) blocks?

Hyperkalemia
Hypocalcemia
Hypernatremia
Hypomagnesemia

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