Steps to interpritation
Rhythm Rate P wave PR interval QRS interval T wave QT interval ST segment
how to find rhythm
look at QRS peak spacing to determine if it is regular
how to find rate
Count number of QRS complex in a 10 min span and times by 6
Normal rate
60-100
Normal P wave
is there one for every QRS
do they all appear the same
PR interval
should be .12 - .2 sec
Normal QRS interval
should be .08 - .1
should look the same across the strip
Normal QT interval
should be .36-.44 (start of QRS to end of T wave)
Normal ST segment
should be flat relative to baseline
Box length of time
.2 sec per tiny box
black mark 3 sec