ACLS Emergency Pharmacology 2

Question 1

Which vasopressor can replace the second dose of epinephrine in a cardiac arrest algorithm?

Accepted Answer

Vasopressin 40 units IV

Answer

Vasopressin 40 units IV/IO can replace the first or second dose of epinephrine in cardiac arrest.

Question 2

A patient in refractory VF has received two defibrillation attempts and epinephrine. What antiarrhythmic should be given next?

Accepted Answer

Amiodarone 300 mg IV push

Answer

Amiodarone 300 mg IV push is the first-line antiarrhythmic for shock-refractory VF/pulseless VT.

Question 3

What is the maximum cumulative dose of adenosine for treating SVT in an adult?

Accepted Answer

18 mg

Answer

The maximum cumulative adenosine dose is 18 mg (6 mg first dose, then 12 mg second dose if needed).

Question 4

Which medication is contraindicated in a patient with WPW syndrome presenting with rapid atrial fibrillation?

Accepted Answer

Diltiazem

Answer

Diltiazem (and other AV-nodal blockers like verapamil and beta-blockers) are contraindicated in WPW with AF because they can enhance accessory pathway conduction.

Question 5

Sodium bicarbonate is most clearly indicated during cardiac arrest in which clinical scenario?

Accepted Answer

Pre-existing hyperkalemia

Answer

Sodium bicarbonate has a clear indication in cardiac arrest caused by pre-existing hyperkalemia or tricyclic antidepressant overdose.

ACLS Practice Test

ACLS Practice Test

ACLS Emergency Pharmacology 2