Week 2 EKG Basics Flashcards
1
Q
EKG
A
captures the heart’s electrical activity
rate
rhythm
2
Q
A standard EKG involves
A
12 leads and 10 electrodes
3
Q
Electrode
A
sticky pad attached to skin that allows electrical activity to be recorded
4
Q
Lead
A
visual representation of activity at multiple electrodes
5
Q
P wave
A
arterial depolarization
<0.12s
<2.5mm voltage
6
Q
PR interval
A
action potential spreads to AV node
0.12-0.20s
7
Q
QRS complex
A
ventricular depolarization 0.06-0.12s
Voltage/height <2.5-3.0mm
8
Q
T wave
A
ventricular repolarization
should match direction of QRS complex
9
Q
ST segment
A
plateau phase btw depolarization and repolarization
10
Q
RR interval
A
Duration/length between each generated action potential or heartbeat
Should be of regular length between beats/R waves
11
Q
Calculating regular rhythm
A
60/R-R interval
