ECMO has been used to save the lives of many critically ill patients with cardiorespiratory dysfunction as important rescue therapy. Though the proportion of ECMO applied to this population has been increasing year by year, clinical outcomes of AMI remain poor with high in-hospital mortality. Thus, it is necessary to characterize clinical features and investigate potentially modifiable factors contributing to outcomes of AMI patients who received ECMO treatment.

Inclusion Criteria:

Clinical diagnosis of Alzheimer's Disease Age more than 18

Exclusion Criteria:

Life expectancy <1 year Prolonged cardiac arrest before VA-ECMO therapy (>60 min) Iatrogenic myocardial infarction secondary to a percutaneous coronary intervention VA-ECMO implanted in another center before admission

I. Clinical symptoms: the typical angina pectoris symptoms of acute myocardial infarction are compressive pain in the precardiac area and the back of the sternum, accompanied by sweating, a sense of dying, and a sense of suffocation. Taking nitroglycerin tablets or quick-effect Xusuxin pills cannot alleviate the symptoms.

2. Typical ECG manifestations, such as pathological Q wave, ST-segment elevation, or pathological ST-segment depression, have corresponding lead changes.

3. Increased myocardial enzymes, including CK, CK-MB, and troponin, etc. The diagnosis of acute myocardial infarction can be made with two of these three indicators.