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Apart from the standard 12 leads, additional leads are sometimes useful in the diagnosis of various conditions. These include right sided chest leads, posterior leads and elevated leads. Although ideally these should be recorded by placing electrodes in these locations, they can be derived from the standard leads. Here, right sided (V3R, V4R, V5R and V6R), posterior (V7, V8 and V9) and elevated leads (V1+1, V2+1, V1+2, V2+2) are derived and displayed. See here for more details.

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QRS complex
ST-T segment

Ebstein's anomaly with preexcitation

43 year old female with Ebstein's anomaly of the tricuspid valve. RBBB pattern and splintered QRS usually seen in this condition are absent. This gives the clue to the presence of a right sided accessory pathway. A normal appearing PR interval indicates that this pathway conducts slowly and electrophysiology study confirmed this was a right sided atriofascicular pathway.

Name: Anon
Sex: UN
Date: 07-12-2021 13:35
Recorded on: Biocare ECGS12A
Filters:

  • Low pass filter - 100 Hz
  • High pass filter - 0.5 Hz
  • Notch filter - 50 Hz