The relationship of previously known type 2 diabetes mellitus and newly diagnosed type 2 diabetes mellitus to clinical outcomes in patients with non-ST elevation myocardial infarction

Background: Cardiovascular disease (CVD) remains the leading global cause of morbidity and mortality, accounting for 17.9 million deaths annually (32 %of all deaths). Type 2 Diabetes Mellitus (T2DM) is a common comorbidity in CVD and significantly worsens outcomes. Over 20 % of patients treated for suspected Acute Coronary Syndrome (ACS) have T2DM, which doubles in-hospital mortality and increases the risk of Major Adverse Cardiac and Cerebrovascular Events (MACCE). This study investigates the association between diabetes status and MACCE incidence in patients with Non-ST-Elevation Myocardial Infarction (NSTEMI), along with the severity of coronary lesions.