EKG #2 Flashcards
One small box how much time
.04 sec
One large box how much voltage
5 mv
normal P wave boxes
2-3 small boxes
normal P wave amplitude
2.5 small boxes
<25% QRS
Normal PR interval boxes
3-5 small boxes
normal QRS box length
<3 boxes
what wave decreased v1- V6
R
2 positive deflections in the QRS is written
R’
ST segment elevation is associated with
myocardial infarction
ST segment depression is associated with c
myocardial ischemia
J point
the point where the QRS complex and ST segment meet
Amplitude of the T wave is normally
<5mm
represents total ventricular activity—the
QT interval
QT men
QT women
Normal QT compared to R-R
< 1/2
Prominent U waves are most often seen in
Hyopkalemia
R-R determines
ventricular rhythm
P-P determines
Atrial Rhythm
Dubin numbers
300, 150, 100, 75, 60, 50, 43, 37
QT Interval length compared to R-R
<1/2 the length