#Morphology_of_ST_Depression
ST depression can be either upsloping, downsloping, or horizontal.
#Horizontal or #downsloping ST depression ≥ 0.5 mm at the J-point in ≥ 2 contiguous leads indicates myocardial ischaemia (according to the 2007 Task Force Criteria).
#Upsloping ST depression in the precordial leads with prominent De Winter T waves is highly specific for occlusion of the LAD.
Reciprocal change has a morphology that resembles “upside down” ST elevation and is seen in leads electrically opposite to the site of infarction.
#Posterior MI manifests as horizontal ST depression in V1-3 and is associated with upright T waves and tall R waves.
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