EKG Flashcards
1
Q
leads to examine to determine QRS axis
A
I, aVF, (II)
2
Q
normal QRS axis
A
-30° to +90°
3
Q
normal P axis
A
+15° to +75°
4
Q
normal HR
A
60 - 100 bpm
5
Q
horizontal scale
A
small box = 40 ms
large box = 200 ms
6
Q
vertical scale
A
small box = 0.1 mv
large box = 0.5 mv
7
Q
systematic interpretation of EKG
(7 + 2 steps)
A
- rate
- rhythm
- conduction (PR, QRS, QT)
- axis
- P wave morphology
- QRS morphology
- ST/T morphology
- compare with previous EKG
- diagnosis
8
Q
normal T axis
A
-30° to +90°
9
Q
normal PR interval
A
120 - 200 ms
10
Q
normal QRS duration
A
80 - 105 ms
