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Stenotrophomonas Maltophilia Workup

  • Author: Burke A Cunha, MD; Chief Editor: Michael Stuart Bronze, MD  more...
Updated: Mar 18, 2016

Laboratory Studies

Culture of the organism from body fluids and proper identification from the microbiology laboratory confirms the presence of S maltophilia. Usually, the presence of S maltophilia represents colonization. A potential pathogenic role must be evaluated by an infectious disease specialist. The mere recovery of a potential pathogen from any body fluid does not indicate a pathogenic role for the organism.


Histologic Findings

The histology of S maltophilia in the rare situations when it causes infection is indistinguishable from the histology of infections caused by other aerobic gram-negative bacilli.

Contributor Information and Disclosures

Burke A Cunha, MD Professor of Medicine, State University of New York School of Medicine at Stony Brook; Chief, Infectious Disease Division, Winthrop-University Hospital

Burke A Cunha, MD is a member of the following medical societies: American College of Chest Physicians, American College of Physicians, Infectious Diseases Society of America

Disclosure: Nothing to disclose.

Specialty Editor Board

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

Chief Editor

Michael Stuart Bronze, MD David Ross Boyd Professor and Chairman, Department of Medicine, Stewart G Wolf Endowed Chair in Internal Medicine, Department of Medicine, University of Oklahoma Health Science Center; Master of the American College of Physicians; Fellow, Infectious Diseases Society of America

Michael Stuart Bronze, MD is a member of the following medical societies: Alpha Omega Alpha, American Medical Association, Oklahoma State Medical Association, Southern Society for Clinical Investigation, Association of Professors of Medicine, American College of Physicians, Infectious Diseases Society of America

Disclosure: Nothing to disclose.

Additional Contributors

Charles S Levy, MD Associate Professor, Department of Medicine, Section of Infectious Disease, George Washington University School of Medicine

Charles S Levy, MD is a member of the following medical societies: American College of Physicians, Infectious Diseases Society of America, Medical Society of the District of Columbia

Disclosure: Nothing to disclose.

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Table 1. Hospital-Acquired S maltophilia Infections
InfectionPredisposing Factor
Catheter-associated bacteriuriaIndwelling urinary catheters
Intravenous line infectionsCentral intravenous catheters
UrosepsisUrinary tract instrumentation
Primary bacteremiaArterial monitoring devices
PseudobacteremiaContamination of blood during collection/processing of blood cultures
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