Antidysrhythmias Flashcards
Class I Antidysrhytmics
Sodium Channel blockers
Class II Antidysrhytmics
Beta blockers- block calcium channels
Class III Antidysrhytmics
potassium blockers- block depolarization
Class IV Antidysrhytmics
calcium channel blockers
What effect does quinidine have on the EKG?
Quinidine widens the QRS complex. If it widens the complex by over 50%, toxicity may be present.
Quinidine- class and use
Class I antidysrhythmic, used for supraventricular and ventricular dysrhythmias.
Quinidine toxicity
Diarrhea, cinchonism, cariotoxicity,
Lidocaine- class and use
Class I antidysrhythmic, used for ventricular dysrhythmias.
lidocaine toxicity
CNS effects- numbness, tingling, convulsions, drowsiness
Phenytoin- class and use
Class I antidysrhythmic— used for digoxin-induced dysrhythmias
BBs/Propranolol- class and use
Class II— used for supraventricular tachydysrhythmias, to slow the HR and conduction across the AV node.
Beta Blockers adverse effects
bronchospasm, heart block, heart failure, hypotension, sinus arrest
Amiodarone- class and use
Class IV, used for atrial and ventricular dysrhythmias.
Used in ACLS protocol for recurrent VFIB—Used in recurrent hemodynamically unstable ventricular tachycardia.
amiodarone- adverse effects
cardiotoxicity- vfib, pulmonary toxicity (dyspnea and cough), corneal microdeposits
Verapamil, diltiazem- class and use
Class IV, used for supraventricular tachdysrhythmias- afib and atrial flutter
verapamil and diltiazem- adverse effects
bradycardia hypotension AV block heart failure elevate digoxin levels beta blocker- increased effect
Adenosine- uses
termination of paroxysmal SVT
Digoxin- uses
supraventricular dysrhythmias, slows HR
Danger- can produce vfib
