Reentrant Ventricular Tachyarrhythmias

Question 1

Reentrant ventricular tachyarrhythmias are most commonly associated with…

Answer 1

ischemic heart disease**

(sometimes also: cariomyopathy-theres something wrong with the muscle-2nd most common reason, valvular disease, certain drugs-quinidine)

Question 2

reentrant ventricular tachyarrthmia - definition:

Answer 2

• at least 3 consecutive QRS complexes originating in the ventricles and recurring at a rapid rate
• may be sustained (variable definition) or nonsustained

Question 3

Mechanisms- reentrant ventricular tachyarrhythmias:

Answer 3

• reentrant (common): micro or macro reentry

- enhanced automaticity

Question 4

sources of error in diagnosing reentrant ventricular tachycardias

Answer 4

• believing VT cant be well tolerated
• depending on a single ECG lead
• depending on independent atrial activity
• putting faith in irregularity
• ignoring QRS morphology

Question 5

v tach is regular or irregular?

Answer 5

regular most often