Antiarrhythmic drugs

Question 1

Parasympatholytic drug of choice

Answer 1

Atropine
For symptomatic bradycardia
Decreases parasympathetic activity, which increases HR

Question 2

Atropine administration

Answer 2

IV

Question 3

Sympathomimetic drugs of choice

Answer 3

Epinephrine and dopamine

Question 4

Chronotropes vs iontropes

Answer 4

Iontropes- increase SV
Chronotropes- increase HR

Question 5

Class 1 Agents target and drugs

Answer 5

Target: Na channel blockade

Double Quarter Pounder-1a ( Disopyramide, quinidine, procainamide)
With Lettuce and Mayo-1b (Lidocaine, Mexiletine
Fries, Please- 1c ( Flecainide, Propafenone)

Question 6

In a patient with excessive thyroid production, which arrythmia med should be monitered

Answer 6

Amioderone

Question 7

Pt has palpapations with narrrow complex, no P waves, normal BP, pt is not in distress. How do you treat?

Answer 7

Adenosine
But if they have Asthma, give diltiazem or verapimil (non Ca channel blockers)
Do not give lebatalol bc it also affects alpha

Question 8

Which ABX causes QTc prolongation

Answer 8

ciprofloxacin, azithromycin

Question 9

Which Antifungal causes QTC prolongation

Answer 9

Fluconazole