1. Instructor Erin Butler RN
EKG Interpretation
Instructor Erin Butler RN

2. Normal EKG Parameters
P-Wave <.12 sec. = represents depolarization of atria-preparation for contraction.
PR Interval sec = time for impulse to spread from atria to ventricles.
QRS Complex sec = depolarization of the ventricles.
QT Interval up to 0.43sec = electrical systole

3. Normal EKG Parameters
T Wave <5mm in amplitude = repolarization of ventricles.
U Wave = sometimes follows T wave, may indicate hypokalemia.

4. EKG Interpretation
Each small box is 0.1 mV
5x5 small boxes are 0.5mV

5. Normal Sinus Rhythm

6. Sinus Bardycardia

7. Sinus Tachycardia

8. Atrial Fibrillation

9. Atrial Flutter

10. Multifocal PVC’s (Premature Ventricular Contractions)

11. Paced Rhythm

12. 1st Degree AV Block

13. Second Degree AV Block Type 1

14. 2nd Degree AV Block Type 2

15. 3rd Degree AV Block

16. Artifact

17. Asystole (Flat line)

18. V-Fib (Ventricular Fibrillation)

19. Ventricular Tachycardia