Variety
What is the gain or amplitude set at?
10mm/mv
What two leads make up lead 3?
left arm to left leg
What is the "pacemaker" of the heart?
SA Node
If you have a 6 second strip and it contains 8 normal cardiac cycles, what would their heart rate be?
80 bpm
What color is the Right arm lead?
white
What is the speed of the paper always set at?
25mm/sec
What two leads makes up Lead two?
right arm to left leg
Where does the electrical flow go after the AV node?
What is the 300 Method?
There is something special you need to remember about this one, what is it?
Count the number of big boxes between two R waves and divide 300 by that number.
Small boxes account for 20% each, so if you had 3 big boxes and 2 little boxes, you would divide 300 by 3.4
What color is the left leg lead?
Red
How many seconds are in a big box?
0.2 seconds
What two leads make up Lead 1?
Right arm and left arm
Where does the electrical flow go after the Bundle of His?
Right and Left bundle branches
What is the 1500 method?
Count the number of small boxes between two R waves and divide 1500 by that number
Where is V1 located?
4th intercostal space, to the right of the sternum
How many seconds are in each little box? How many little boxes make up a big box?
0.04 seconds, 5 boxes
What lead is your ground lead?
right leg
Where is the SA node and AV node located?
Right atrium
What makes up a cardiac cycle?
P wave, QRS wave and T wave
Where is V5 located?
5th intercostal, anterior axillary
Name 4 different waveform problems we discussed
Wandering baseline
AC interference
Somatic Tremors
Broken recording
What type of leads are the limb leads?
bipolar
Where does the electrical flow end?
Purkinjie Fibers
What is the 6 second rule?
Count the number of cardiac cycles multiply by 10.