Definition
- The J point is the the junction between the termination of the QRS complex and the beginning of the ST segment.
Abnormalitites
- Elevation or depression of the J point is seen with the various causes of ST segment abnormality.
- Notching of the J point occurs with benign early repolarisation.
- A positive deflection at the J point is termed a J wave (Osborn wave) and is characteristically seen with hypothermia.
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