Classification of Myocardial Infarction (MI)

In this article, we will discuss the Classification of Myocardial Infarction (MI). So, let’s get started.

Classification

Type 1 – Spontaneous MI – It is related to ischemia due to a primary coronary event such as plaque rupture, ulceration, fissuring, erosion or dissection resulting in coronary thrombosis

Type 2 – Supply/Demand mismatch – MI secondary to ischemia due to either increased oxygen demand or decreased oxygen supply e.g. coronary artery spasm, coronary embolism, anemia, arrhythmia, hypertension or hypotension.

Type 3 – Suspected MI-related death – Sudden unexpected cardiac death often with symptoms suggestive of myocardial infarction.

Type 4a – PCI related MI (percutaneous coronary intervention) – Rise in cardiac biomarkers accompanied by symptoms along with electrographic, angiographic or imaging evidence of ischemia after PCI (MI associated with PCI).

Type 4b – Stent thrombosis – Confirmed stent thrombosis in the context of ischemia and dynamic cardiac biomarkers changes (MI associated with stent thrombosis).

Type 5 – CABG related MI (coronary artery bypass graft) – Rise in cardiac biomarkers accompanied by electrographic, angiographic or imaging evidence of ischemia after CABG (MI associated with CABG).

 

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