|Click to enlarge|
- The give away to this ECG is the very bottom of the paper.
- This has been done with non-standard calibration of 50 mm/s.
- This is why:
- The ECG spans several pages
- Why there are only 6 leads represented here
- Why the rate at first glance appears to be very slow.
- Why everything looks prolonged, at 50mm/s each big square now represents 100ms with each small square 20ms.
- 65 bpm
- Sinus rhythm
- Normal (-33 deg)
- PR - Normal (~140ms)
- QRS - Normal (80ms)
- Incomplete ECG only 6 leads represented on the A4 sheet
- Secondary to adjusted paper speed
- This ECG was 3 A4 Pages long !
The ECG was repeated with standard calibration and was normal !
References / Further Reading
Life in the Fast Lane
- Chan TC, Brady WJ, Harrigan RA, Ornato JP, Rosen P. ECG in Emergency Medicine and Acute Care. Elsevier Mosby 2005.