Test 4/2215 Flashcards
Early suddenly
Premature
Escape beat
A response of an ectopic focus to a pause of non activity.
Pause is seen as a flat area of baseline
Atrial escape beat
If a SA node fails to fire an ectopic focus in atrium
Will fire giving off a p wave unlike the other
Normal appearing Q R S
Junction all escape beat
After a pause of non activity after a pause in SA mode pacing an AV JUNCTIONAL ECTOPIC may fire producing normal appearing QRS
Premature beats
Caused by premature firing of various ectopic foci creating waves that appear earlier than usual.
They may look normal or bizarre but hey appear suddenly in cycle
Atrial premature beat
Originated in atrial ectopic focus and appears earlier than the normal P wave but looks different bc it won’t and isn’t generated by SA NODE
JUNCTIONAL premature beat
Originates in JUNCTIONAL ectopic focus which fires before SA NODE begins a normal cycle cussing normal QRS generally not preceded by a p wave
Premature ventricular contractions
Comes from ectopic focus with the ventricles in the myocardium
Occurs early before a p wave is expected
There is a long pause after pvc. Where heart is silent
Bigeminy
Every other beat
Trigeminy
Every third beat
Quadrigeminy
Every 4 th beat
Coupled
2 pvcs together
Triple
3 pvcs together
Pause
Escape