Quiz 10 - Ventricular Arrhythmias

Question 1

What is a premature ventricular contraction?

Answer 1

An early ectopic impulse originating from the ventricles.

Question 2

What is an Idioventricular (IDR) rhythm? (aka ventricular escape rhythm)

Answer 2

A rhythm that originating from ectopic ventricular foci

Question 3

What is the typical rhythm coming from an IDR aka vent escape rhythm?

Answer 3

30 - 40 bpm or 40 - 110 if accelerated.

Question 4

What is vent. trachycardia aka V tach?

Answer 4

A rapid ecotpic impulse orginating form the vent.; typically sudden

Question 5

What are the visual charcterstics of v tach

Answer 5

Pwave typically not associated with QRS; QRS = wide and smooth; rate = 140 - 250bpm

Question 6

What are some causes of v tach?

Answer 6

Enchanced sympthetic activity; excessive catecholmines; heart disease; ectopic pacemakers in vent.

WOnt be seen in “normal” healthy adults; serious indicator of something being wrong

Question 7

Describe what Torades de pointes is? (aka Rapid ventricular polymorphic rhythm)

Answer 7

Its when the QRS change directions or move in a positive and negative direction (aka up then down). Its firing rate will also be above 250.

Question 8

WHat are teh charterstics of vent. fibralltion?

Answer 8

They are ectopic, disorganized, chatioc impules orginating from the vent.

They have NO rhythm, pwaves or QRS (V. tach can turn into this if not treated)