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Colonization in patients receiving and not receiving topical antimicrobial prophylaxis
M J Bonten1, C A Gaillard, W G Johanson
1Department of Internal Medicine, University Hospital Maastricht, The Netherlands.
American Journal of Respiratory and Critical Care Medicine
|November 1, 1994
Summary
Topical antimicrobial prophylaxis (TAP) significantly reduced oropharyngeal and tracheal colonization in intensive care unit (ICU) patients. Patients receiving TAP experienced less frequent colonization and remained free of it longer.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Microbiology
Background:
- Healthcare-associated infections remain a significant concern in intensive care units (ICUs).
- Oropharyngeal and tracheal colonization are precursors to serious infections like ventilator-associated pneumonia.
- Topical antimicrobial prophylaxis (TAP) is explored as a strategy to reduce microbial colonization.
Purpose of the Study:
- To investigate the impact of topical antimicrobial prophylaxis (TAP) on the colonization of the oropharynx and trachea in ICU patients.
- To compare colonization rates between patients receiving TAP, those not receiving TAP in the same ICU, and a control group in a separate ICU.
Main Methods:
- A prospective study involving three groups of ICU patients.
- Group 1 received TAP (tobramycin, colistin, amphotericin B) in the oropharynx and stomach.
- Groups 2 and 3 served as controls, with Group 2 not receiving TAP within the same ICU as Group 1, and Group 3 in a separate ICU without TAP.
Main Results:
- Patients receiving TAP demonstrated significantly lower rates of oropharyngeal and tracheal colonization.
- Even patients not receiving TAP in the same ICU as the treated group showed reduced colonization compared to the separate ICU control group.
- Patients not colonized on admission who received TAP remained colonization-free for a longer duration.
Conclusions:
- Topical antimicrobial prophylaxis effectively reduces oropharyngeal and tracheal colonization in the ICU setting.
- The presence of TAP in an ICU environment appears to exert a protective effect even on non-recipients within that unit.
- TAP is a promising strategy for infection control in critically ill patients, influencing both direct recipients and the overall ICU microbial environment.