Non-ST-segment elevation myocardial infarction

Non-ST-segment elevation myocardial infarction (NSTEMI) refers to a typical ischemic chest pain that lasts more than 20 minutes. Serum myocardial necrosis marker concentrations increase and dynamically evolve, but the ECG does not have the typical ST-segment elevation, and It is a type of acute myocardial infarction that is characterized by normal ST segment and depression. The pathological basis of NSTEMI is mainly the induction of acute non-occlusive thrombus based on coronary plaque damage, or although it is an occlusive thrombus, the collateral circulation is good. Pathological morphological studies have confirmed that ST segment elevation myocardial infarction (STEMI) coronary The vein contains a large amount of fibrin red thrombus, while NSTEMI is a platelet-rich white thrombus. This pathological morphological change has very important clinical significance. It is precisely because of the different pathological morphology of the patients that the ECG changes of the two are different, and the treatment methods are different (the drug thrombolysis is suitable for STEMI, but not for NSTEMI).

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