Antirrhythmic Drugs Flashcards Preview

T7. Pharmacology > Antirrhythmic Drugs > Flashcards

Flashcards in Antirrhythmic Drugs Deck (15):

What are types of antiarrhythmic drugs?

Class 1 Sodium channel blockers
Class 2 B adrenoceptor blockers
Class 3 Potassium channel blockers
Class 4 Calcium channel blockers
Class 5 Unclassified


What is MOA_antiarrhythmic_class 1 sodium channel blockers?

Decrease the rate of rise of phase 0 of the action potential by blocking sodium entry into the cell during deplorization


What are types of sodium channel blockers?

Class 1a
Class 1b
Class 1c


What are antiarrhythmic_class 1a_sodium channel blockers used for?

atrial and ventricular arrhythmias_all purpose antiarrhythmics


What is Procainamide (Pronestyl)?

Antiarrhythmic_sodium channel blocker_class 1a
Used for atrial, ventricular arrhythmias_all purpose


What are antiarrhythmic_sodium channel blocker_class 1b drugs used for?

used for treatment of ACUTE ventricular arrhythmias_ventricular tachycardia, ventricular fibrillation, and ventricular ectopy


What is Lidocaine (Zylocaine)?

Antirrhythmic_Sodium channel blocker_class 1b


What are antiarrhythmic sodium channel blocker class 1c drugs used for?

used for chronic suppression of ventricular arrhythmia


What is MOA_antiarrhythmic_class 2 drugs?

useful in suppressing the tacharrhythmia that resul from increase sympathetic activity by stabilizing cardiac membrane, slowing down conduction through SA and AV nodes, and increasing the refractory period


What is Propranolol(Inderal)?

antiarrhythmic_class 2_B-adrenoceptor blocker
most commonly used to treat arrhythmia patients


What is MOA_class 3_Potassium channel blockers?

Prolong repolarization; useful in treating intractable ventricular arrhythmias


What is Amiodarone?

antiarrhythmic drug_class 3_potassium channel blocker
effective in treatment and prevention of ventricular fibrillation and ventricular tachycardia


What is MOA_antiarrhythmic_class 4_calcium channel blockers?

Slow conduction and prolong the effective refractory period, especially in the AV node by blowing the inward calcium current
MOST EFFECTIVE against atrial than ventricular arrhythmias


What is Digoxin (Lanoxin)?

Antiarrhythmia_Unclassified class drug
used to control ventricular rate in atrial fibrillation or flutter


What is Adenosine(Adenocard)?

Antiarrhythmic_Unclassified drug
Drug of choice for Paroxysmal supraventricular tachycardia