ECG Interpretation Flashcards
1
Q
Interpretation Steps
A
Check demographics
1) Heart rate
Regular- 300/number of large squares present within one R-R interval
Irregular: number of complexes on the rhythm strip x6
2) Heart rhythm
3) Axis
4) P waves
5) P-R interval
120-200 ms (3-5 small squares)
6) QRS complex
NARROW (normal) (< 0.12 seconds or less than 3 small squares) or BROAD (> 0.12 seconds or more than 3 small squares)
7) S-T segment
8) T waves
9) QTc interval
Abnormal is >450ms (11 small squares)
