Cardio I - Tachyarrhythmias Flashcards Preview

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Flashcards in Cardio I - Tachyarrhythmias Deck (17):
1

How are premature atria contractions treated if asymptomatic? Symptomatic?

Asymptomatic - no treatment
Symptomatic - Beta blocker

2

How are premature AV junctional beats treated?

No treatment

3

What condition when coupled with premature ventricular contractions requires treatment? By what? If also has cardiac disease and is considered high risk?

LV dysfunction
Beta Blockers
AICD or amiodarone

4

What is "irregular irregularity" seen in?

Atrial fibrillation

5

What are the three types of A fib? How are each treated?

Paroxysmal - less than 7 days, terminates spontaneously
Persistent - greater than 7 days, cardiovert
Permanent - greater than 7 days, sinus rhythm not possible, rate control

6

What can appear to be atrial fibrillation but has regular ventricular rate?

AV block

7

Enlargening/changes in what chamber during atrial fibrillation are not conducive to cardioversion?

Atrium

8

What are the three main goals/treatments for atrial fibrillation?

Correct underlying etiology
Cardioversion
Rate control

9

How fast is the flutter rate in atrial flutter? What is always treatment? What is the cure? What is used to prevent?

250-300
Cardioversion
Ablation
Rate control (BB, digoxin, CCA)

10

How are supraventricular tachycardias treated?

Ablation

11

How are multifocal atrial tachycardias treated (correcting what two things)? What is a distinguishing factor?

Correct hypoxia and acidosis
3 or more consecutive different P-waves with rate > 100

12

What is the treatment for preexcitation? For nonparoxysmal junction tachycardia? What must not be done in the latter?

Localize and ablate
Override pacing, treat cause
Do not cardiovery

13

What is the preferred treatment for ventricular tachycardia? What else is sometimes used?

Cardioversion
Rate control, override pacing

14

What distinguishes torsades de pointes from polymorphic ventricular tachycardia? How are each treated?

Torsades de pointes - prolonged QT - BB, magnesium, pacing
Polymorphic VT - normal QT - class I or III agent

15

Is there a treatment for accelerated idioventricular tachycardia? What is another name?

No
"Slow v-tach"

16

What is first line treatment for ventricular flutter/fibrilation?

Crdioversion

17

What little wave at the end of the QRS complex can predispose someone to ventricular tach?

Epsilon waves