4: ECG intro Flashcards
1
Q
ECG are used to diagnose
A
Cardiac arrhythmia
2
Q
What are the potential differences of the body regions at rest
A
There are none
3
Q
What appears on an ECG with a negatively charged wave approaching a + conductor
A
Upward deflection
Line going up on ECG
4
Q
What is read if the depolarization is perpendicular to the leads
A
Nothing
5
Q
Where is the - electrode usually placed
A
right arm
6
Q
P wave
A
Atrial Depolarization
Small positive bump
7
Q
Flat line between P and Q wave
A
Atrial repolarization
8
Q
Q wave
A
Depolarization of septum
Tiny, sharp, negative deflection
9
Q
R wave
A
Depolarization from Septum to L Ventricle
Tall positive deflection
10
Q
S wave
A
Depolarization from apex to top of heart
Small negative deflection
11
Q
T wave
A
Ventricular Repolarization
Positive deflection
