Ventricular Rhythms

Question 1

Ventricular Tachycardia

Answer 1

Rate: 100-220
Rhythm: usually regular
P waves: not discernible
PR interval: not present
QRS: >0.12, wide/bizarre

Question 2

Ventricular Fibrillation

Answer 2

Rate: Unable to determine
Rhythm: Irregular
P waves: not discernible
PR interval: none
QRS interval: none

Question 3

Idioventricular (IVR), Agonal, Dying Heart, Ventricular Escape

Answer 3

Rate: <40
Rhythm: Regular
P waves: usually absent
PR interval: none
QRS interval: >0.12, wide/bizarre

Question 4

Accelerated IVR (AIVR)

Answer 4

Rate: 40-100
Rhythm: Regular
P waves: Not discernible
PR interval: none
QRS interval: >0.12, wide/bizarre

Question 5

Premature Ventricular Contractions (PVC)

Answer 5

Rate: depends on underlying rhythm
Rhythm: Irregular
P waves: none with each PVC
PR interval: none with PVC
QRS interval: >0.12, wide/bizarre