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Type 2 myocardial infarction (MI) is due to myocardial oxygen supply-demand imbalance, which is caused by various underlying factors. Whether these different etiologies carry different prognoses is unclear.
In a secondary analysis of clinical trial data, investigators examined the prevalence and outcomes of different factors associated with oxygen supply-demand imbalance in patients with type 2 MI. Among 6,096 patients (median age, 70 years; 43% women) with an adjudicated type 1 or type 2 MI, 1115 patients had type 2 MI. Compared with type 1 MI patients, those with type 2 MI were older and had more comorbidities, including higher rates of cardiovascular disease and kidney disease.
In patients with type 2 MI, the most common factor associated …