Acute pulmonary edema in patients with unstable angina

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Abstract
Background Pulmonary edema is an important manifestation of ischemic cardiac dysfunction, both in the presence and absence of myocardial infarction. However, the clinical characteristics and natural history of pulmonary edema with unstable angina have not been fully evaluated. Methods One hundred twenty patients admitted to our hospital within 6 hours from the onset of last chest pain were studied. Clinical features were reviewed from hospital charts and coronary angiography was performed in acute phase (33 patients) and in the late hospital phase (62 patients). The mean follow-up period was 26 months. Results: Pulmonary edema was present in 24 patients and was absent in 96 patients. The duration of chest pain was longer (PPP<0.001). These data indicate that a large mass of ischemic myocardium could cause transient increase of left ventricular diastolic pressure to pulmonary edema level without infarction ever occurring. Conclusions Because of the high incidence of multivessel disease and the poor prognosis in patients with pulmonary edema in unstable angina, early and aggressive diagnostic efforts should be undertaken to exclude viable segments of myocardium in patients with unstable angina complicated by pulmonary edema.

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