Critical Care Medicine

Skip Navigation LinksHome > August 2013 - Volume 41 - Issue 8 > Aerosolization of Acinetobacter baumannii in a Trauma ICU*
Critical Care Medicine:
doi: 10.1097/CCM.0b013e31828a39c0
Clinical Investigations

Aerosolization of Acinetobacter baumannii in a Trauma ICU*

Munoz-Price, L. Silvia MD1,2,4; Fajardo-Aquino, Yovanit MD4; Arheart, Kristopher L. EdD2,5; Cleary, Timothy PhD6; DePascale, Dennise MT4; Pizano, Louis MD3; Namias, Nicholas MD3; Rivera, Jesabel I. BS7; O’Hara, Jessica A. MPH7; Doi, Yohei MD, PhD7

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Objective: To establish the presence of air contamination with Acinetobacter baumannii in the trauma ICU.

Design: Point prevalence microbiological surveillances.

Settings: A 1,500-bed public teaching hospital in the Miami metro area.

Patients: Trauma ICU patients.

Measurements: Pulsed field electrophoresis was performed on environmental and clinical isolates to determine the association of any isolates from the air with clinical isolates.

Main Results: Out of 53 patient areas cultured, 12 (22.6%) had their air positive for A. baumannii. The presence of an A. baumannii–positive patient (underneath the plate) was associated with positive air cultures for A. baumannii (11 of 21 [52.4%] vs 0 of 25 [0%]; p < 0.0001). However, we were not able to find differences in air contamination based on the presence of A. baumannii in respiratory secretions versus absence (p = 1.0). Air and clinical isolates were found to be clonally related.

Conclusions: Aerosolization of A. baumannii in the ICUs is a concern, and its role in the transmission of this organism among patients should be further clarified.

© 2013 by the Society of Critical Care Medicine and Lippincott Williams & Wilkins

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