Arrhythmias Flashcards
(25 cards)
Quinidine
Class 1a antiarrhythmic
Short to medium Na+ channel blocker
Anticholinergic effect
Lidocaine
Class 1b antiarrhythmic
Short and rapid Na+ channel blocker
Phenytoin
Class 1b antiarrhythmic
Short and rapid Na+ channel blocker
Lidocaine indications
Ventricular tachycardia
Ischemia
Ventricular fibrillation caused by infarction
!Digitalis induced ventricular tachycardia!
Local anesthetic
Phenytoin indications
Anti-epileptic
Digitalis induced ventricular tachycardia
Flecainide
Class Ic antiarrhythmic
Very long Na+ channel blocker
Propanolol
Beta blocker
Class II antiarrhythmic
Induces unspecified Na+ channel blockage
Propafenone
Class Ic antiarrhythmic
Very long Na+ channel blocker
Amiodarone
Class III antiarrhythmic
K+ channel blocker
Verapamil
Class IV antiarrhythmic
L-type calcium channel blocker
Gallopamil
Class IV antiarrhythmic
L-type calcium channel blocker
Atropine indications
Sinus bradycardia
SA block with vagal discharges
2nd or 3rd AV block
Ipratropium bromide
Sinus bradycardia
SA block with vagal discharges
2nd or 3rd AV block
Digitoxin
Cardiac glycoside
Reversibly inhibits the Na+/K+ ATPase
Digoxin
Cardiac glycoside
Reversibly inhibits the Na+/K+ ATPase
Cardiac glycoside indications
Chronic heart failure
Supraventricular tachycardia
Atrial arrhythmia/fibrillation
oedema reduction
Digitoxin vs. digoxin
Digitoxin is given to elderly with an unclear renal function
Ouabain
Cardiac glycoside
Dobutamine
Beta-adrenoreceptor agonist
Dobutamine indication
Cardiac shock
Enoximone
Phosphodiesterase 3 inhibitor. Prevents the cAMP breakdown in the heart.
Milrinone
Phosphodiesterase 3 inhibitor. Prevents the cAMP breakdown in the heart.
PDE3 inhibitors indication
Severe and resistant heart failure
Pimobendane
Calcium sensitizer
