ventricular rhythms

Question 1

Ventricular Escape Rhythm aka idioventricular rhythm

Answer 1

rate: 20-40bpm
rhythm- regular
P wave: none
P:QRS- None
PR interval- None,
QRS width- 120> ms (0.12sec) WIDE.

Question 2

accelerated ventricular rhythm

Answer 2

rate: 40-100
rhythm- regular
P wave: none
P:QRS- None
PR interval- None,
QRS width- 120> ms (0.12sec) WIDE.

Question 3

ventricular tachycardia-monomorphic

Answer 3

rate: >100
rhythm- regular
P wave: none
P:QRS- None
PR interval- None,
QRS width- 120> ms (0.12sec) WIDE.

Question 4

polymorphic ventricular tachycardia

Answer 4

rate: >100
rhythm- irregular
P wave: none or complete AV disassocaition
P:QRS- None
PR interval- None,
QRS width- 120> ms (0.12sec) WIDE.

Question 5

torsades de pointes

Answer 5

rate: 200-250bpm
rhythm- irregular
P wave: none 
P:QRS- None
PR interval- None,
QRS width- 120> ms (0.12sec) WIDE.

Torsades de pointes (TdP) is a specific form of polymorphic ventricular tachycardia occurring in the context of QT prolongation; it has a characteristic morphology in which the QRS complexes “twist” around the isoelectric line.

Question 6

ventricular fibrillation

Answer 6

rate: inderterminate
rhythm: irregular, “chaotic”
P wave: none
P:QRS ratio: None
PR interal- none
QRS width- unidentifiable.

Question 7

Ventricular flutter

Answer 7

Continuous Sine Wave
No identifiable P waves, QRS complexes, or T waves
Rate usually > 200 beats / min

Extreme form of VT with loss of organised electrical activity
Associated with rapid and profound hemodynamic compromise
Usually short lived due to progression to ventricular fibrillation
As with ventricular fibrillation rapid initiation of advanced life support is required.