CMT CMT Pharmacology and Cardiac Medications

Question 1

Which class of antiarrhythmic drug works by blocking sodium channels and is used to treat ventricular arrhythmias?

Accepted Answer

Class IA/IB/IC agents

Answer

Class II beta-blockers

Answer

Class III potassium channel blockers

Answer

Class IV calcium channel blockers

Question 2

Amiodarone is classified as which class of antiarrhythmic medication?

Accepted Answer

Class III

Answer

Class I

Answer

Class II

Answer

Class IV

Question 3

Which medication is the first-line treatment for symptomatic bradycardia caused by increased vagal tone?

Accepted Answer

Atropine

Answer

Amiodarone

Answer

Adenosine

Answer

Lidocaine

Question 4

A patient receiving digoxin develops bradycardia with first-degree AV block. The cardiac monitor technician should alert the nurse because this may indicate:

Accepted Answer

Digoxin toxicity

Answer

Therapeutic drug level

Answer

Hypokalemia effect only

Answer

Normal drug response

Question 5

Which electrolyte imbalance most significantly increases a patient's risk of digoxin toxicity?

Accepted Answer

Hypokalemia

Answer

Hypernatremia

Answer

Hypercalcemia

Answer

Hypermagnesemia

Question 6

Adenosine is the drug of choice for terminating which arrhythmia?

Accepted Answer

Paroxysmal supraventricular tachycardia (PSVT)

Answer

Atrial fibrillation

Answer

Ventricular fibrillation

Answer

Torsades de pointes