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20 Cards in this Set

  • Front
  • Back
sustained Ventricular rhythm
sustained greater than 30 seconds
causes of premature Ventricular beats
Digitalis intoxication, CHF, MI, Hypoxia, low potassium, low magnesium, cardiomyopathy (drugs, nicotine, caffeine)
pause following PVC that allows recovery is called
full compensatory pause
bigemmy, trigemmy, quad
bigemmy=every other beat is premature, tri=every 3rd beat quad=every 4th beat
unifocal vs multifocal
arising from the same focus or from different foci
retrograde p wave
sometimes the ectopic impulse from the ventricle may spread backwards into the atria
left ventricular ectopics
left rabbit ear is taller than right rabbit ear. peak early, upstroke is steep, downstroke is slurred
salvo of ventricular ectopy
3 in a row
2 PVCs grouped together
coupling
interpolated ventricular premature beats
sandwiched between 2 normal beats without a full compensatory pause
fusion beats
summation beats of impulses that come together and activating the same territory.
R on T phenomenon
puts pt at high risk of going into Ventricular rhythm. Get a fusion beat-->V tach/V fib
ventricular escape beat
when there is such a long puase in sinus beats, the ventricle will pick up and you will see a loooong pause, then a venticular beat
features favoring ventricular ectopy
fusion beats, R on T, deepest QS in V4-5, L rabbit ear taller in V1
V tach defined
at least 3 consecutive bizarre QRS complexes. Rate 120-200/min. Usually regular rhythmn
V fib
no regular pattern or rate to the rhythm. Coarse, irregular pattern. Ventricles ineffective in pumping blood. Terminal unless, CPR and SHOCK
Torsades the pointes treatment
Magnesium sulfate
Accelearated idioventricular thythm
ventricular rhythm that is between 60-100/min. It is a normal rate, but ventricular rhythm
torsades de pointes
twising of the QRS complexes. associated with prolonged QT interval.
torsades can be caused by
drugs, phenothizines, electrolyte disturbances, subarachnoid hemorrhage