Optimal triage of patients with acute chest pain.

Acute chest pain (ACP) is one of the most common symptoms in patients admitted to emergency departments (ED). It can be related to several life-threatening cardiovascular conditions such as acute coronary syndrome (ACS), aortic dissection, and pulmonary embolism. The optimal triage of patients with ACP is a clinical and healthcare necessity given the large number of patients daily admitted to ED with this symptom. The first contact with the patient in ED includes the clinical appraisal of the characteristics of ACP and coexisting symptoms, and the assessment of the patient's medical history. Risk scores may help stratify a patient's likelihood of having cardiac chest pain. The ECG examination allows the identification of patients with ST-segment elevation, depression, or T-wave changes, but may be normal in patients with non-ST-segment elevation ACS. Rapid protocols based on serial high-sensitivity cardiac troponin assays within one or two hours are recommended for identifying candidates for early discharge. Due to the bedside feasibility, non-invasiveness, and wide availability, transthoracic echocardiography represents the first-line imaging modality for evaluating patients with ACP. In selected cases, computed tomography angiography may also be performed. A practical approach to ACP in ED should improve patient outcomes and reduce healthcare system costs. This review aimed to provide an overview of the characteristics of patients with ACP of cardiac origin and to describe the state of the art about their management in the ED.