- Impression:
- Why are we doing an ECG?
- Ventricular Rate?
- Regular or irregular?
- P wave before every QRS?
- QRS after every P wave?
- What’s the PR Interval?
- Is the QRS narrow (<3 boxes) and normal?
- Is the ST segment isoelectric?
- Is the T wave normal?
- Determine the origin.
PR interval should be 120 to 200 milliseconds or 3 to 5 little squares
The width of the QRS complex should not exceed 110 ms, less than 3 little squares
The QRS complex should be dominantly upright in leads I and II
QRS and T waves tend to have the same general direction in the limb leads
All waves are negative in lead aVR
The R wave must grow from V1 to at least V4 The S wave must grow from V1 to at least V3
The ST segment should start isoelectric except in V1 and V2 where it may be elevated
The P waves should be upright in I, II, and V2 to V6
There should be no Q wave or only a small q less than 0.04 seconds in width in I, II, V2 to V6
The T wave must be upright in I, II, V2 to V6
Comments are closed