antidysrhythmic drugs

Question 1

sodium channel blocker class 1A action

what drugs?

Answer 1

slows conduction and prolongs repolarization

drugs

DIS PRO QUEEN is 1A

1. disopyramide phosphate
2. procainamide HCl
3. quinidine sulfate

Question 2

sodium channel blocker class 1B action

drugs

Answer 2

slows conduction and shortens repolarization

drugs

ME LIt in 1B

1. mexilitine
2. lidocaine

Question 3

sodium channel blocker class 1C action

Answer 3

prolongs conduction with little to no effect on repolarization

drugs

FLEC PROP. flaky prop it’s group C can be flaky

flecainide
propafenone HCl

Question 4

beta blockers (CLASS II)

what does it do?

what are the four drugs in this class?

Answer 4

decreases entry of calcium into heart. decreases how much blood goes into the heart (velocity), how automatic the heart is (automaticity) and the refractory period or recovery time

decreases:

velocity
calcium
automaticity
recovery time

beta blockers block your V CAR.

1. acebutelol
2. propanolol
3. esmolol
4. sotalol HCl

APES and BETA become best friends on top of the BLOCKS

Question 5

CLASS III: drugs that prolong repolarization

what does it do???

what drugs are in this class?

Answer 5

prolongs repolarization during ventricular dysrhythmias and prolongs action potential duration

prolongs
RVD —repolar VD
APD—- action PD

what drugs?
AD AM SID(pronounced ‘SIDE’ bc 3/5 end w -ide)

mr. adam sid PROLONGS repolarization

1. adenoside
2. amiodarone HCl
3. sotalole
4. ibulitide
5. dofetilide

Question 6

Class IV : calcium channel blockers

Answer 6

blocks calcium influx
slows conduction velocity
decreases myocardial contractility
increases refraction in AV node

drugs
verapamil HCl
diltiazem

VERY nice DRUGS