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Emergency Cardiac Arrhythmias and Treatment Quiz

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#1

Which of the following is a common emergency cardiac arrhythmia?

Tachycardia
Explanation

Rapid heart rate

#2

What is the primary characteristic of ventricular fibrillation?

Absence of pulse
Explanation

No detectable pulse

#3

What is the primary goal of treatment in cardiac arrest?

Achieve return of spontaneous circulation (ROSC)
Explanation

Main objective during cardiac arrest management

#4

What is the recommended treatment for ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT) during advanced cardiac life support (ACLS)?

Defibrillation
Explanation

Primary intervention in ACLS for VF/VT

#5

Which of the following conditions can cause a widened QRS complex on an ECG?

Ventricular tachycardia
Explanation

Associated with widened QRS on ECG

#6

What is the term for an abnormally slow heart rate?

Bradycardia
Explanation

Abnormally low heart rate

#7

Which of the following medications is commonly used in the treatment of atrial fibrillation?

Amiodarone
Explanation

Frequently prescribed drug for AF management

#8

What is the preferred initial treatment for stable ventricular tachycardia?

Amiodarone infusion
Explanation

First-line intervention for stable VT

#9

What is the first-line treatment for stable supraventricular tachycardia (SVT)?

Intravenous adenosine
Explanation

Initial therapy for stable SVT

#10

Which of the following is NOT a potential cause of pulseless electrical activity (PEA)?

Hypokalemia
Explanation

Not commonly associated with PEA

#11

Which antiarrhythmic medication carries a risk of exacerbating heart failure?

Dofetilide
Explanation

May worsen heart failure

#12

What is the recommended initial treatment for symptomatic bradycardia?

Intravenous atropine
Explanation

First-line therapy for symptomatic bradycardia

#13

Which of the following is a characteristic feature of torsades de pointes?

Prolonged QT interval
Explanation

Associated with prolonged QT on ECG

#14

Which of the following is a characteristic feature of pulseless ventricular tachycardia (VT)?

Wide QRS complexes
Explanation

Presents with broad QRS on ECG

#15

Which of the following ECG findings is consistent with atrioventricular (AV) nodal reentrant tachycardia (AVNRT)?

Absent P waves
Explanation

Characteristic ECG feature of AVNRT

#16

Which class of antiarrhythmic drugs primarily targets the fast sodium channels in cardiac tissue?

Class I
Explanation

Acts on fast sodium channels

#17

Which of the following medications is used as an antidote for digoxin toxicity?

Digoxin immune Fab (Digibind)
Explanation

Antidote for digoxin overdose

#18

What is the main difference between ventricular tachycardia (VT) and ventricular fibrillation (VF) on an ECG?

VF shows a wide, bizarre QRS complex, while VT shows a narrow QRS complex.
Explanation

Characteristic ECG distinction between VF and VT

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