3.3 Cardiovascular: Antiarrythmic

Question 1

Treatment of all types of arrythmias; WPW syndrome

SE: Drug-induced lupus

Answer 1

Procainamide

Question 2

SE: cinchonism (headache, tinnitus, vertigo)

Answer 2

Quinidine

Question 3

Post-MI arrhythmias; digitalis arrhythmias

SE: seizures

Answer 3

Lidocaine

Question 4

Contraindicated post-MI, refractory arrhythmias

Answer 4

Propafenone; encainamide; moricizine; flecainide

Question 5

Perioperative and thyrotoxic arrhythmias, SVT

Answer 5

Esmolol (IV)

Question 6

SE: dose dependent torsades de pointes

Answer 6

Sotalol

Question 7

Most efficacious anti arrhythmic

SE: skin deposits; pulmonary fibrosis; hyper/hypothyroidism

Answer 7

Amiodarone

Question 8

Outpatient management of SVT

SE: Gingival hyperplasia

Answer 8

Verapamil

Question 9

What are the effects of Class I anti arrhythmic on action potential duration?

Answer 9

Class IA: prolonged AP
Class IB: shortens AP
Class IC: no effect

Question 10

Anti-arrhythmic Class IA

Answer 10

I Am the Queen who Proclaimed Diso’s pyramid

Quninidine, procainamide, disopyramide

Question 11

Anti-arrhythmic Class IB

Best post MI

Answer 11

I Buy Mexican Tacos from Lily

Mexiletine; tocainide; lidocaine

Question 12

Anti-arrhythmic Class IC

Answer 12

I Chose Pagkain For Energy

Propafenone; flecainide; encainide

Question 13

Amiodarone Toxicity

Answer 13

Pulmonary fibrosis; paresthesias; tremors; thyroid dysfunction; corneal deposits; skin deposits

Question 14

Why are dihydropyridine calcium channel blockers not useful as anti-arrhythmic?

Answer 14

Evoke compensatory sympathetic discharge which facilitates arrhythmias rather than terminating them