Antidysrhythmics

Question 1

Verapamil has an interaction with this medication

Answer 1

Dantrolene (can cause an increase in K+)

Question 2

Amiodarone interacts with these meds

Answer 2

Digoxin and warfarin

Question 3

What metabolizes adenosine so rapidly?

Answer 3

Plasma and vascular endothelial cell enzymes

Half life is less than 10 seconds!!

Question 4

Med used to treat dysrhythmias caused by digoxin toxicity

Answer 4

Phenytoin

Question 5

What dysrhythmias is phenytoin used for?

Answer 5

Only for digoxin induced A&V dysrhythmias

Question 6

Dysrhythmias treated with digoxin

Answer 6

A-fib/flutter with rapid RVR in those with impaired cardiac function

Question 7

Bad effects of verapamil

Answer 7

Interacts with dantrolene
Can cause digoxin toxicity (by decreasing its clearance)
Can cause heart block if given with beta blockers
Prolongs the effect of NM blockers
More myocardial depression with anesthetics

Question 8

This med is used to treat MH

Answer 8

Dantrolene

Question 9

Why is propanolol not as good as metoprolol or esmolol?

Answer 9

Because it’s not B1 specific, it has a longer onset, and more SEs.

Question 10

Antidote for digoxin toxicity

Answer 10

Digoxin immune FAB (DigiFAB)

Question 11

What can happen if only a patial dose of atropine is given?

Answer 11

Paradoxical effect (reflex bradycardia)