Prognostic Role of Brain Natriuretic Peptide in Acute Pulmonary Embolism

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Abstract
Background— Rapid, noninvasive, and accurate prognostic assessment with an inexpensive cardiac biomarker is an appealing approach for patients with acute pulmonary embolism (PE). Methods and Results— We measured at the time of admission the plasma level of plasma brain natriuretic peptide (BNP) to determine its utility in prognosticating the clinical course of 73 consecutive patients with acute PE. We used a prespecified BNP cut-off level (<90 pg/mL) for the prediction of the absence of a major adverse cardiovascular event, defined as any of the following: death, cardiopulmonary resuscitation, mechanical ventilation, or use of pressors, thrombolysis, catheter fragmentation, or surgical embolectomy. In the 20 (27%) patients with adverse events, median BNP (194.2, range 3.7 to 1201.1 pg/mL) was higher than in patients with a benign course (39.1, range 1.0 to 1560.0 pg/mL; P<0.001). However, 3 patients with adverse outcomes had low BNP levels on admission: 1 death, BNP 52 pg/mL; 1 patient with prolonged card...