Evaluating chest pain in the emergency department.

AUTOR(ES)

Murata, G H

RESUMO

Chest pain is one of the most difficult diagnostic problems for physicians working in an emergency department. In this setting, more malpractice dollars are awarded for missed myocardial infarction than for any other physician error. This problem usually occurs when the patient has atypical symptoms, the physician is inexperienced, or the diagnosis is not considered. The clinical manifestations of myocardial infarction vary greatly, and patients with "atypical" presentations have a poorer prognosis than those with classic symptoms. Although no feature of a patient's history excludes infarction with certainty, pain that is sharp, positional, pleuritic, or reproduced by palpation indicates a lower probability of acute ischemic heart disease. New immunochemical methods and serial sampling strategies have increased the sensitivity of creatine kinase-MB as an indicator for the disorder. Recent investigations have also established the prognostic value of the initial electrocardiogram. These methods allow emergency physicians to assess the risk of complications and to perform triage when there is a shortage of beds in the coronary care unit. Emergency physicians must also consider other diseases for which coronary care might be beneficial.

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