Ventricular Arrhythmia Flashcards Preview

Cardio Exam 3 > Ventricular Arrhythmia > Flashcards

Flashcards in Ventricular Arrhythmia Deck (6)
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1
Q

Characteristic on EKG of a depolarization caused by a ventricular focus.

A

Wide QRS

2
Q

Why do PVCs (premature ventricular contraction) usually have a complete compensatory following the beat?

A

The PVC electric signal is often not transmitted up to the atria to reset the SA node. So the original sinus rhythm is maintained.

3
Q

Treatment for PVC

A

Usually a secondary cause: meds, stimulants

-Tx: remove the cause

4
Q

What are Romanano- Ward syndrome and Jervell and Lange-Nielsen syndrome?

A

Abnormalities in potassium or sodium or both channels leading to prolonged QT and possibly TdP.
RW: autosomal dominant
JLN: autosomal recessive

5
Q

How is Arrhythmogenic Right Ventricular Dysplasia diagnosed and treated?

A

Dx: epsilon wave in chest leads 1,2,3
Tx: implantable cardiac defibrillator (ICD)

6
Q

What are the Josephson and Brugada Signs?

A

Brugada’s sign
Interval from R wave to bottom of S wave is 0.10 sec

Josephson’s sign
Small notching near low point of S wave

They indicate ventricular tachycardia and NOT SVT