Chap 6 Ventricular Rhythms Flashcards
This is the result of an electrical impulse from a supraventricular site discharging at the same time as an ectopic site in the ventricles
Fusion beat
This often follows a PVC and occurs because the SA node is usually not affected by the PVC
Compensatory pause
PVCs that look-alike in the same lead and begin from the same anatomic site are called
Uniform
Which of the following is a result of an electrical impulse from a supraventricular site discharging at the same time as an ectopic site in the ventricles?
Fusion beats
This occurs after a pause in which a supraventricular pacemaker failed to fire.
Ventricular escape beat
What exists when three or more ventricular escape beats occur in a row at a rate of 20 to 40 bpm
Idioventricular rhythm
This exists when three or more sequential PVCs occur at a rate of more than 100 bpm
Ventricular tachycardia
When the QRS complexes of VT are of the same shape and amplitude, the rhythm is called
Monomorphic VT
With this rhythm, the QRS complexes vary in shape and amplitude from Beat to Beat, and appear to twist from upright to negative or negative to upright and back, resembling a spindle.
Polymorphic VT
This reflects a total absence of ventricular electrical activity
Asystole