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Random UWORLD > Arrhythmias > Flashcards

Arrhythmias Flashcards

1
Q

Initial treatment for ventricular fibrillation

A

CPR & defibrillation

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2
Q

Major characteristics of atrial fibrillation

A

Tachycardia
Irregularly irregular rhythm
No P waves

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3
Q

hallmark of 3rd degree AV block

A

No correlation between P waves and ARS complexes

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4
Q

Drugs that prolong QT interval, increasing likelihood of torsades de pointes in those at risk

A 
Ant-infectives: macrolides, chloroquine
Antipsychotics: haloperidol, risperidone
Methadone
Anti-HIVprotease inhibitors (-navirs)
Antiarrhythmics: class IA (quinidine) & class III (K+ channel blockers such as sotalol)
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5
Q

What are two diferent types of second degree AV bock? How do they differ?

A

Mobitz I- progressively prolonged PR intervals then a blocked beat
Mobitz- blocked beat without progressive PR prolongation

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6
Q

Why is warfarin anticoagulation important in patients with chronic atrial fibrillation?

A

Reduce risk of thromboembolic stroke

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7
Q

How do you treat torsades?

A

Mg+

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