Abstract
BackgroundStenotrophomonas maltophilia (SMA) is present in hospital environments and has been one of the pathogens that cause nosocomial contamination and infections. To investigate the occurrence of Stenotrophomonas maltophilia (SMA) in bronchoscope lavage fluid (BALF) among 25 cases treated in the Division of Infection and to trace the contamination source and transmission route.Methods25 cases of SMA positive BALF occurring from May 11 to August 10, 2018 were tested for drug sensitivity. Environmental hygiene conditions were investigated to identify the source of contamination and the route of transmission.ResultsBALF associated SMA was in all cases sensitive to minocycline, levofloxacin and chloramphenicol and resistant to ceftazidime and imipenem. 92.3% of samples were sensitivity to compound sulfamethoxazole. Investigation of environmental hygiene parameters revealed SMA growing on the inner wall of the fiberoptic bronchoscope as a likely source of contamination.ConclusionIncomplete cleaning and sterilization of the fiberoptic bronchoscope led to SMA nosocomial contamination. Strict sterilization procedures are required to prevent and control nosocomial contamination.
Highlights
Stenotrophomonas maltophilia (SMA) is present in hospital environments and has been one of the pathogens that cause nosocomial contamination and infections
Stenotrophomonas maltophilia (SMA) is a non-fermenting gram-negative bacillus found in plants and soil and on the surface of human skin
Infections lead to bacteremia, endocarditis and infections of the respiratory tract, urethra and wounds. 25 occurrences of SMA positive Bronchoscope lavage fluid (BALF) were recorded in the Division of Infection of our institution
Summary
Stenotrophomonas maltophilia (SMA) is present in hospital environments and has been one of the pathogens that cause nosocomial contamination and infections. To investigate the occurrence of Stenotrophomonas maltophilia (SMA) in bronchoscope lavage fluid (BALF) among 25 cases treated in the Division of Infection and to trace the contamination source and transmission route. Stenotrophomonas maltophilia (SMA) is a non-fermenting gram-negative bacillus found in plants and soil and on the surface of human skin. It is present in hospital environments and is detected in the respiratory and intestinal tracts. SMA is one of the pathogens that cause nosocomial infections, superseded among non-fermenting Gramnegative bacilli only by Pseudomonas aeruginosa and Acinetobacterbaumannii [1]. Infections lead to bacteremia, endocarditis and infections of the respiratory tract, urethra and wounds. 25 occurrences of SMA positive BALF were recorded in the Division of Infection of our institution
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