Anti arrhythmic Meds Exam 2-Cardiac

Question 1

Class I-A action

Answer 1

Prolongs repolarization;

Inhibits fast sodium channel, decreases automaticity, depresses phase 0, prolongs the action potential duration

Question 2

Class I-A medication

Answer 2

Procainamide

Question 3

1-A used on what dysrythmia ?

Answer 3

A and V

Question 4

Class I-B action

Answer 4

Accelerates repolarization: Inhibits fast sodium channel, depresses phase 0 slightly, shortens action potential duration

Question 5

1-B medication

Answer 5

Lidocaine (IV/IVP)

Tocainide (PO form of lidocaine)

Question 6

1-B what dysrhythmia?

Answer 6

Ventricular

Question 7

1-B extra notes

Answer 7

• Takes care of Ventricular rhythms such as PVC’s or runs of V-tach
• May be on Lidocaine drip or Tocainide PO to send home with

Question 8

Class I-C action

Answer 8

Little or no effect on repolarization: • Inhibits fast sodium channel, depresses phase 0 markedly
• Slows His-Purkinje conduction profoundly leading to a prolonged QRS duration

Question 9

1-C medication

Answer 9

Flecainide

Question 10

1-C treats what dysrhythmia?

Answer 10

A and V

Question 11

Class II action

Answer 11

beta blocker:
•↓ automaticity & ↓ conduction leading to ↓ HR
•Depresses phase 4 depolarization
•Blocks sympathetic stimulation of the conduction system

Question 12

Class II med

Answer 12

Propranolol

Question 13

Class II notes

Answer 13

• Decreases workload of the heart – can decrease force of contraction
• May not be best for a pt in HF, but sometimes they are trial & error
• Use with caution in pts with MI because it can put them in HF

Question 14

Class III action

Answer 14

Prolongs repolarization: •Blocks potassium channel, prolongs phase 3 repolarization, prolongs action potential duration

Question 15

Class III meds

Answer 15

Amiodarone

Question 16

Class III treats what dysrythmia

Answer 16

A and V

Question 17

Class IV action

Answer 17

Calcium Channel Blockers: • Blocks calcium-channels to slow HR
• Inhibits inward calcium channel
• Depresses phase 4 depolarization, lengthens repolarization in phases 1 and 2

Question 18

Class IV meds

Answer 18

Diltiazem (Cardizem)

Question 19

Class IV treats what dysrhythmias

Answer 19

Atrial

Question 20

Class IV notes

Answer 20

Prevents coronary artery spasm angina by causing smooth muscle relaxation

Question 21

Anticholinergics action

Answer 21

increase HR

Question 22

Anticholinergics meds

Answer 22

Atropine

Question 23

Anticholinergic notes

Answer 23

Avoid in patient’s who have had a heart transplant; use theophylline instead

Question 24

Catecholamines action

Answer 24

• Alpha-Beta1 Beta2 stimulant

- ↑ activity in all body systems

Question 25

Catecholamines medication

Answer 25

Epinephrine

Question 26

Catecholamine notes

Answer 26

Reserved for code status

Question 27

Potassium channel opener action

Answer 27

• Allows influx of K more quickly
• Stops tachy arrhythmias
• Can cause short term asystole
• Given rapidly IVP

Question 28

Potassium Channel Opener medication

Answer 28

Adenosine

Question 29

Potassium Channel Opener treats what dysrythmia?

Answer 29

Atrial

Question 30

Potassium Channel blocker notes

Answer 30

• Can monitor with a single lead heart monitor during administration (don’t have to have a continuous 12 lead ECG read out)
• Administer IVP undiluted by pushing as fast as you can – has very short half-life

Question 31

Positive Ionotropic: Cardiac Glycoside

Answer 31

increase contractility–> positive inotropic

decrease HR–> negative chronotropic