706afa36_kipedia__the_free_encyclopedia__Description
[Feature] J-point [Pathology] The J point may be elevated as a normal variant. The appearance of a separate J wave or Osborn wave at the J point is pathognomonic of hypothermia or hypercalcemia.[23] [Description] 
The J-point is the point at which the QRS complex finishes and the ST segment begins.
Electrocardiography - Wikipedia, the free encyclopedia