EKG Flashcards
1
Q
Normal axis
A
0 to 90
2
Q
Left axis deviation
A
0 to -90
3
Q
Right axis deviation
A
90 to 180
4
Q
Extreme right axis deviation
A
180 to -90
5
Q
Left axis deviation is caused by
A
Inferior MI or LVH
6
Q
Right axis deviation is caused by
A
RVH, Lateral MI
7
Q
What pairs of leads make 90 degrees and can be used to determine axis?
A
I and AVF
III and AVL
8
Q
If I is positive and aVF is neg then the axis is
A
left
9
Q
If both I and aVF are positive then the axis is
A
normal
10
Q
If I is neg and aVF is positive the axis is
A
Right
11
Q
Tall or peaked t waves in II III and aVF
A
R atrial enlargment
12
Q
Biphasic p in V1
A
L atrial enlargement
13
Q
Criteria of q wave
A
> 1 small box and/or 1/3 of total QRS
14
Q
Q wave indicates
A
Transmural infarct
15
Q
Poor R wave progression indicates
A
Lateral MI
