arrhythmia Flashcards

1
Q

which of the following two cardiac events are considered a defect in impulse conduction?

A

reentry circuits

conduction block

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2
Q

which of the following scenarios describes when an escape beat could occur?

A

the SA node is severely depressed by the parasympathetic system

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3
Q

what type of arrhythmia is shown in the EKG?

A

atrial flutter

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4
Q

which of the following describes why ventricular fibrillation (V-fib) is life threatening?

A

v-fib fails to pump blood thru the body

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5
Q

which of the following describes the difference between a premature ventricular contraction and a conduction block?

A

PVC occurs in the ventricle and conduction block only occurs in the atrium

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6
Q

which of the following best describes why most anti-arrhythmic drugs have a potential to cause arrhythmia?

A

antiarrhythmic drugs alter ion movement, which can cause arrhythmias

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7
Q

given the change in the ventricular action potential in the dotted line, which drug class was the patient prescribed?

A

class IC

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8
Q

which beta-blocker is recommended for catecholaminergic polymorphic ventricular tachycardia (CPVT)?

A

Nadolol

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9
Q

Dofetilide is one of the pure class III agents. Which arrhythmia is treated by Dofetilide?

A

Long QT syndrome

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10
Q

what ion movement is responsible for the depolarization uptick (phase 0) of the AV node action potential?

A

Ca2+

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11
Q

what drug is a first line treatment for converting narrow complex PSVT to a normal rhythm?

A

adenosine

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