CRAT Antiarrhythmic Medications and Clinical Interventions 2

Question 1

Synchronized cardioversion is indicated for which of the following rhythms?

Accepted Answer

Unstable supraventricular tachycardia with a pulse

Answer

Ventricular fibrillation

Answer

Asystole

Answer

Pulseless electrical activity

Question 2

What is the primary purpose of the 'synchronized' mode during cardioversion?

Accepted Answer

To prevent shock delivery during the vulnerable T wave period

Answer

To increase the energy delivered

Answer

To allow repeated shocks automatically

Answer

To synchronize with the patient's breathing

Question 3

Beta-blockers used as antiarrhythmics belong to which Vaughan Williams class?

Accepted Answer

Class II

Answer

Class I

Answer

Class III

Answer

Class IV

Question 4

Digoxin toxicity can cause which ECG changes?

Accepted Answer

Scooped ST depression and bradyarrhythmias

Answer

Peaked T waves and wide QRS

Answer

ST elevation in anterior leads

Answer

Prolonged QT with U waves

Question 5

Transcutaneous pacing is indicated as an emergency intervention for:

Accepted Answer

Symptomatic bradycardia refractory to atropine

Answer

Rapid atrial fibrillation

Answer

Ventricular fibrillation

Answer

Asymptomatic first-degree AV block

Question 6

Which calcium channel blocker is primarily used to control ventricular rate in atrial fibrillation?

Accepted Answer

Diltiazem

Answer

Nifedipine

Answer

Amlodipine

Answer

Nimodipine