Journal
JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE
Volume 63, Issue 4, Pages 747-750Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.ta.0000240458.46050.38
Keywords
B-type natriuretic peptide; echocardiography; heart failure; GCS
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Background: Rapid diagnosis of congestive heart failure (CHF) is essential to treatment. B-type natriuretic peptide (BNP) is a neurohormone secreted by the heart in response to fluid overload and has been shown to be elevated in medical patients with left ventricular dysfunction. However, BNP has not been evaluated in the critically ill patient with trauma. Methods: Trauma patients of at least 18 years of age with an expected intensive care unit stay of at least 24 hours were studied. Patients had BNP measurements at admission and at 24 hours and 48 hours. Echocardiography was performed within 48 hours of admission. CHF was determined by echocardiographic findings of systolic or diastolic dysfunction. Elevated BNP levels were defined as those greater than 100 pg/mL. A Fisher's exact test was performed to determine whether a relationship between BNP levels and echocardiographic findings existed. Linear correlation was used to determine whether BNP correlated with echocardiographic findings and initial Glasgow Coma Scores. Results: Fifty patients were included in the analysis. There was no relationship between elevated BNP levels and echocardiographic evidence of CHF (p = 0.149). There was no threshold value above which CHF was present. There were 28 patients with head injuries, and no relationship between BNP levels and CHF could be found (p = 0.432) in this group. Conclusion: Our data show no association between BNP and CHF in the critically ill patient with trauma. BNP levels may be elevated in patients with head injuries without echocardiographic evidence of CHF.
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