UNASSIGNED: @entity583 ( @entity583 ), a subset of @entity1187 , is damage to the cardiac muscle as evidenced by elevated cardiac troponin levels in the setting of acute @entity63 . @entity453 is the leading cause of mortality in the United States. @entity662 is a common presentation in @entity1 with @entity583 ; however, there are multiple noncardiac causes of @entity662 , and the diagnosis cannot always be made based on initial presentation. The assessment of a possible @entity583 includes evaluation of risk factors and presenting signs and symptoms, rapid electrocardiography, and serum cardiac troponin measurements. A validated risk score, such as the Thrombolysis in @entity583 score, may also be useful. Electrocardiography should be performed within 10 minutes of presentation. ST elevation @entity583 is diagnosed with ST segment elevation in two contiguous leads on electrocardiography. In the absence of ST segment elevation, non-ST elevation ACS can be diagnosed. An elevated cardiac troponin level is required for diagnosis, and an increase or decrease of at least 20% is consistent with @entity583 . In some @entity1 with negative electrocardiography findings and normal cardiac biomarkers, additional testing may further reduce the likelihood of @entity453 . Cardiac catheterization is the standard method for diagnosing @entity453 , but exercise treadmill testing, a stress myocardial perfusion study, stress echocardiography, and computed tomography are noninvasive alternatives.

XXXX : Diagnostic Evaluation.

@entity662 :: ('MESH:D002637', 'Disease') :: ['Chest pain', 'chest pain'] @entity1187 :: ('MESH:D054058', 'Disease') :: ['acute coronary syndrome'] @entity1 :: ('9606', 'Species') :: ['patients'] @entity63 :: ('MESH:D007511', 'Disease') :: ['ischemia'] @entity453 :: ('MESH:D003324', 'Disease') :: ['Coronary artery disease', 'coronary artery disease'] @entity583 :: ('MESH:D009203', 'Disease') :: ['MI', 'Myocardial Infarction', 'Myocardial infarction']
@entity1187 :: (MESH:D054058,Disease) :: ['Acute Coronary Syndrome']
