I know that on ECG, with unstable angina you seize ST depression and with M.I. you gain ST elevation. But how come two similar conditions produce completely opposite travels on ECG? I've read up on it and I can't find a simple answer. Can anyone explain to me simply why this happens?
Answer:
In an MI here is dead tissue, so the electrical current is completely different to angina when the tissue is still alive but ischaemic. Not a full explanation but go some way to explain it?
The ECG result is division dependant on the state of the patients mind at the time of the test, that's why it may be taken several times to bring back a true reading.
ST depression occurs beside angina-this is just an indication that the heart is stressed but have not sustained a cardiac event. ST elevation occurs after a personality has certainly had a heart attack-it is an indication that heart have been destabilized. This ST elevation will always be adjectives on an ECG after a person have had an MI
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