EKG Review Flashcards
Osborne waves or notched j oints
hypothermia
order of electrical pathway
SA to AV to bundle HIS to purkinje fibers to ventricles
easy way to count rate
300 150 100 75 60 50 43 37
how to count rythym on 3 sec strip
number of QRS complexes in 30 boxes times 10
what are 4 possible irregular rythyms
sinus arrhythmia
wandering pacemaker
multifocal atrial tachycardia
atrial fibrillation
sinus arrhythmia description
considered normal yet irregular rhythm that varies with respiration
P waves should look identical
wandering pacemaker description
p waves shape varies as location varies
rate is under 100 bpm
considered irregular ventricular rhythm
what pts are at risk for Wandering pacemaker
COPD pts
multifocal atrial tachycardia
p waves shape varies
rate is over 100 bpm
irregular rhythm
COPD pt
atrial fib description
continuous chaotic atrial spikes
no p waves
irregular ventricular rhythm
sinus arrest with 60-80 bpm is called
atrial escape rhythm
sinus arrest with beats 40-60 per min called
junctional escape rhythm
ventricular escape rhythm description
idioventricular rhythm 20-40 min
what leads to an atrial escape beat
a sinus block - get atrial escape beat then SA node resumes pacing
3 types of premature beats
PAC, PVC and PJB (premature junctional beat)
7 tachyarrythmias
paroxysmal atrial tachycardia paroxysmal junctional tachycardia paroxysmal ventricular tachycardia atrial flutter ventricular flutter atrial fibrillation ventricular fibrillation
AV block first degree has ____ PR interval
prolonged, more than .2 seconds
2nd degree type I mobitz aka wenckebach
pr lengthens .. going going gone dropped QRS
2nd degree av block mobitz II
some P waves don’t produce a QRS
3rd degree AV block aka ____
complete heart block
no relationship between P and QRS
treat with pacemaker
RBBB criteria
R prime in V1
and S wave in v 6
LBBB criteria
R prime in v 5 or v6
plus rS in V1
what leads are your thumbs when trying to figure out axis
left hand thumb is lead one
right hand thumb is aVF
If both up = normal axis
+ deflection in one only = left axis
+ deflection in aVF only = right axis
both - deflection = ..??
right atrial enlargement findings
large diphasic P wave in lead II (tall initial peak)
