Page 345 - ECG dr shamol_Slide
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Why ST elevation Ions normally move only through specialized ion
channels in the myocardium .The ion channels require
energy to function, and in ischemic injury loss of
energy production these channel not function
Cell death from severe ischemia generates holes in the
cells, and ions can flow freely in and out bypassing
the channels completely. So there is increase current
flow toward injured area. that why corresponding lead
shows ST elevation
In addition to ischemia, inflammation, drugs,
electrolyte abnormalities, and genetic variation can
each affect the normal function of these cardiac
channels. ST elevation can also be seen in bundle
branch block, hypertrophy, and pericarditis
