arrhythmia Flashcards
which of the following two cardiac events are considered a defect in impulse conduction?
reentry circuits
conduction block
which of the following scenarios describes when an escape beat could occur?
the SA node is severely depressed by the parasympathetic system
what type of arrhythmia is shown in the EKG?
atrial flutter
which of the following describes why ventricular fibrillation (V-fib) is life threatening?
v-fib fails to pump blood thru the body
which of the following describes the difference between a premature ventricular contraction and a conduction block?
PVC occurs in the ventricle and conduction block only occurs in the atrium
which of the following best describes why most anti-arrhythmic drugs have a potential to cause arrhythmia?
antiarrhythmic drugs alter ion movement, which can cause arrhythmias
given the change in the ventricular action potential in the dotted line, which drug class was the patient prescribed?
class IC
which beta-blocker is recommended for catecholaminergic polymorphic ventricular tachycardia (CPVT)?
Nadolol
Dofetilide is one of the pure class III agents. Which arrhythmia is treated by Dofetilide?
Long QT syndrome
what ion movement is responsible for the depolarization uptick (phase 0) of the AV node action potential?
Ca2+
what drug is a first line treatment for converting narrow complex PSVT to a normal rhythm?
adenosine