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Anesth Analg 2006;103:1219-1223
© 2006 International Anesthesia Research Society
doi: 10.1213/01.ane.0000237433.00877.5a

CRITICAL CARE AND TRAUMA

Initial and Delayed Onset of Acute Respiratory Failure: Factors Associated with Development and Outcome

Suzana M. Lobo, MD, Francisco R. M. Lobo, MD, Flavio Lopes-Ferreira, MD, Daliana Peres Bota, MD, Christian Melot, MD, PhD, and Jean-Louis Vincent, MD, PhD

From the Department of Intensive Care, Erasme Hospital, Free University of Brussels, Brussels, Belgium.

Address correspondence and reprint requests to Jean-Louis Vincent, MD, PhD, Department of Intensive Care Medicine, Erasme University Hospital, Route de Lennik 808, 1070 Brussels, Belgium. Address e-mail to jlvincen{at}ulb.ac.be.

In a prospective observational study of 1038 adult admissions to a 31-bed medical/surgical intensive care unit (ICU), acute respiratory failure (ARF, defined as a Pao2/Fio2 ratio ≤200 mm Hg and the need for respiratory support) occurred in 182 (58%) of the 313 admissions with an ICU stay of more than 48 h. Initial ARF (onset within 48 h of ICU admission) occurred in 133 (42%) patients, and delayed onset ARF (onset >48 h after ICU admission) in 49 (16%). On admission, the cardiovascular sequential organ failure assessment (SOFA) score was higher in initial than in delayed onset ARF (1.1 ± 1.5 vs 0.6 ± 1.2, P < 0.05). High admission serum C-reactive protein concentrations (OR 1.08, 95% CI 1.04–1.12, P = 0.0001) and SOFA scores (OR 1.20, 95% CI 1.08–1.33, P = 0.0007) were the factors independently associated with initial ARF, and a low Glasgow coma scale (GCS) score (OR 1.13, 95% CI 1.04–1.21, P = 0.0018) was associated with delayed onset ARF. In initial ARF, a high SOFA score (OR 1.24, 95% CI 1.12–1.38, P = 0.0001) and a low GCS score (OR 0.89, 95% CI 0.83–0.96, P = 0.0013) on admission, and in delayed onset ARF, a low GCS score at 48 h (OR 0.67, 95% CI 0.54–0.84, P = 0.0011) were independently associated with death. The mortality rate was similar for initial and delayed onset ARF.






Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press
Copyright © 2006 by the International Anesthesia Research Society.