NCLEX Review & Nursing School

Premature Ventricular Contraction

– a premature contraction of the ventricles due to unexpected firing within one of the ventricles.

– Abnormal conduction within the ventricles.

– There is no P wave before the PVC.

– Can be Multifocal or Unifocal.

 

Ventricular Tachycardia

– originates from the ventricles

– at least 3 consecutive ventricular contractions.

– QRS Complex is widened

Rate

• Ventricular:  unknown
• Atrial: Absent

Rhythm

• R-R Interval: Regular
• P-P Interval: Absent

Duration

• PR Interval: Absent
• QRS Complex:  Chaotic, bizzare and widened

Ventricular Tachycardia

– ♣ Can lead to cardiac arrest or V Fib.

– paroxysm of 3 beats or more.

– Prepare patient for cardioversion.