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The definitive diagnosis of NSTEMI or STEMI cannot be known without a Cardiac Catheter result because of the diagnostic difference between them.
Describe main difference between STEMI and NSTEMI - - The question identifies the difference between NSTEMI and STEMI
One indicates a full blockage of the artery and the other indicates a partial blockage of the artery.
STEMI - More serious the artery is completely occluded and likely patient will require a CABG
NSTEMI - Partially occluded artery found on cath and can be treated with angioplasty and stent often with good result.