Myocardial infarction is defined pathological perspective as myocardial cell death (necrosis) due to prolonged
ischemia. Infarcts are classified temporally according to the pathologic
appearance as follows: acute (6 h to 7 days); healing (7 to 28 days), healed
(29 days or more).
The diagnosis of acute myocardial
infarction (AMI) is defined by the World Health Organization as the
presence of at least two of three criteria: typical symptoms (i.e., chest
pain), electrocardiogram (ECG) abnormalities and increased cardiac enzyme
levels.
Cardiac troponin I is a sensitive cardiac biomarker which generalized be
used in hospitals especially emergency department in patients with chest pain
or ECG has ST elevation for the early detection and diagnosis of myocardial
infarction.
From empirical studies obtained and selected, the high sensitive
troponin I assay has the highest diagnostic accuracy. With the use of the
sensitive troponin assay, the early detection of myocardial is infarction
increased by 29%.