Pharm quiz: Anti-Arrhythmics (class I, III and V) Flashcards
Adenosine is used to treat what?
SVT
Which term describes the effect of a drug on SA nodal automaticity?
chronotrope
which term describes the effect of a drug on contractility?
Inotropy
Which class of drugs affects the rapid sodium channels?
Class I
Sodium Channel blockers
Which class of drugs markedly prolongs repolarization time by blocking K + channels?
Class III
Potassium Channel Blockers
Pneumonitis, skin discolouration and peripheral neuropathy are particular toxicities associated with what drug?
Amiodarone
Which class of antiarrhythmic drugs produces decreased depolarization on the action potential?
Class Ia
Which class of antiarrhythmic drugs produces an increase to action potential duration?
Class III
Potassium Channel Blockers
What is the name of the antiarrhythmic classification system?
Vaughan - Williams
With which drugs would you monitor QT prolongation?
Quinidine and Procainamide
In what percentage of the population at large is torsade de pointes seen?
3-4%
To which AAA class does adenosine belong?
Class V
Which of the following drugs is a positive inotropic and negative dromotropic?
digitalis
Which is the drug of choice for polymorphic ventricular tachycardia?
Magnesium Sulfate
Which is the drug of choice for monomorphic ventricular tachycardia?
Amiodarone
