Lesson 4 Flashcards
atrial dysrhythmia
2 paths of depolarization one fast one slow
one stops in the slow channel
one goes through fast side passes through allowing cells on the one side to repolarize
premature atrial contraction
sinus pacemaker is coming from somewhere else and its a different shape
bigeminy
trigeminy
quadridgeminy
PAC every other beat
PAC every 3rd beat
PAC every 4th beat
compensatory pause
PAC occurs and the P-P interval is maintained
doesn’t change the rhythm
non compensatory pause
PAC occurs and P-P interval is not maintained
can reset the rhythm
nonconducted PAC
ventricles weren’t able to fire p wave is almost mixed with t wave
what does SA do during PAC
it waits
wandering atrial pacemaker (WAP)
irregular
3+ different P waves with its own PR intervals meaning at least 3 sites act as a pacemaker
p waves important factors
upright and round/ look the same
MAT
multifocal atrial tachycardia
tachycardia WAP
altered automaticity/trigger activity
true or false WAP can turn to MAP
T
supra ventricular tachycardia
can start and stop suddenly
to fast to identify P waves
any regular rate over 150
reentry pathway across skeleton
atrial flutter
lots of p waves (saw tooth pattern)
QRS is regular multiple P-P intervals
2:1 (2 fakes, one real)
a fib
chaotic firing no P waves
irregular because pacemaker is variable
atrial conduction
squees the atria from the top down to the ventricles
“tops up” ventricles with blood
