*ECG Interpretation*

Question 1

Is the rhythm regular?

Answer 1

R waves equal or unequal distance apart

Question 2

What is the rate?

Answer 2

Regular: Large squares ÷ 300
Irregular: Number of R waves in 30 Large squares x 10

Question 3

Are there P waves?

Answer 3

Upright
2-3 small squares

Question 4

Are all the P waves the same?

Answer 4

Yes / No

Question 5

Is there a P wave before every QRS?

Answer 5

Yes / No

Question 6

Is there a QRS after every P wave?

Answer 6

Yes / No

Question 7

Is the PR interval normal and the same?

Answer 7

0.12-0.2 seconds
3-5 small squares

Question 8

Is the QRS complex of normal duration?

Answer 8

0.08-0.12 seconds
2-3 small squares

Question 9

Is the ST segment isoelectric?

Answer 9

Elevation or depression

Question 10

Is the T wave normal?

Answer 10

Upright (Except for leads aVR & V1)

Question 11

1st degree block

Answer 11

Fixed, prolonged PR interval

Question 12

2nd degree type I block

Answer 12

PR interval gets longer, then drops QRS

Question 13

2nd degree type II block

Answer 13

P wave missing QRS wave

Question 14

3rd degree block

Answer 14

No relationship between P & QRS waves