ch23 antiarrhythmic drugs (lesson 4)

Question 1

what causes arrhythmias

types?

Answer 1

electrolyte disturbances/overstimulation of the heart

can happen anywhere in the heart

types include tachycardias, premature contractions, flutters and fibrillations

Question 2

supraventricular arrhythmias

Answer 2

in atria/AV node areas include premature atrial contractions (PAC)

Question 3

Beta blocker suffix

Answer 3

lol

Question 4

ventricular arrhythmias

Answer 4

originate below the AV node

includes PVC

Question 5

phases of cardiac potential

Answer 5

phase 0 generation of action potential
phase 1-3 repolarization
phase 4 resting level

Question 6

what can anti arrhythmic drugs cause?

Answer 6

proarrhythmia

Question 7

class 2 anti arrhythmic drugs

Answer 7

beta blockers

ex propranolol, esmolol

Question 8

class 3 anti arrhythmic drugs

Answer 8

K channel blockers

Question 9

class 4 anti arrhythmic drugs
types?

Answer 9

calcium channel blockers

non/dihydropyridines

Question 10

class 4 verapamil

Answer 10

acts on SA/AV nodes

Question 11

class 4 diltiazem

Answer 11

more potent then verapamil

Question 12

class 4 adenosine

Answer 12

used in emergency/acute situations

Question 13

preferred therapy for sinus bradycardia?

Answer 13

atropine

cardiac pacemakers

Question 14

preferred therapy for atrial flutter and atrial fibrillation

Answer 14

beta blockers, calcium channel blockers, digoxin

anticoagulants

Question 15

preferred therapy for supra ventricular tachycardia

Answer 15

propanolol/metoprolol

verapamil or diltiazem

Question 16

preferred therapy for ventricular arrhythmias

Answer 16

acute therapy

chronic therapy

Question 17

class 2

Answer 17

beta blockers

Question 18

class 3

Answer 18

k blockers

amiodarone

Question 19

class 4

Answer 19

Ca blockers
verapamil
diltiazem
adenosine