ACLS ACLS Pharmacology & Medications 3

Question 1

When administering adenosine to a patient receiving theophylline, which adjustment is necessary?

Accepted Answer

Increase the adenosine dose as theophylline antagonizes it

Answer

Reduce the dose of adenosine by half

Answer

No adjustment needed

Answer

Switch to diltiazem instead

Question 2

Which drug should be avoided in a patient with Wolff-Parkinson-White (WPW) syndrome who presents with rapid AF?

Accepted Answer

AV nodal blocking agents (diltiazem, verapamil)

Answer

Amiodarone

Answer

Adenosine

Answer

Procainamide

Question 3

What is the primary mechanism of action of epinephrine that makes it useful during cardiac arrest?

Accepted Answer

Alpha-adrenergic vasoconstriction raising coronary perfusion pressure

Answer

Increases vagal tone

Answer

Direct cardiac defibrillation

Answer

Reduces myocardial oxygen demand

Question 4

Which calcium channel blocker is preferred for IV administration in stable supraventricular tachycardia per ACLS?

Accepted Answer

Verapamil

Answer

Amlodipine

Answer

Nifedipine

Answer

Felodipine

Question 5

What is the recommended dose of dopamine used for hemodynamically significant bradycardia unresponsive to atropine?

Accepted Answer

2–20 mcg/kg/min

Answer

1–2 mcg/kg/min

Answer

25–50 mcg/kg/min

Answer

100 mcg/kg/min bolus

Question 6

Which medication is used for post-cardiac arrest care to prevent recurrent VF/VT after ROSC?

Accepted Answer

Amiodarone infusion

Answer

Atropine infusion

Answer

Adenosine drip

Answer

Magnesium bolus only