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Microbial colonization of Blom-Singer prostheses in postlaryngectomy patients
M D Palmer1, A P Johnson, T S Elliott
1Department of Clinical Microbiology, Queen Elizabeth Hospital, Edgbaston, Birmingham, United Kingdom.
The Laryngoscope
|August 1, 1993
Summary
Microbial colonization, including Candida and Staphylococcus aureus, was common in failed Blom-Singer voice prostheses. This dual infection was linked to device malfunction.
Area of Science:
- Medicine
- Microbiology
- Biomaterials Science
Background:
- Blom-Singer voice prostheses are crucial for speech restoration after laryngectomy.
- Prosthetic device failure can significantly impact patient quality of life.
- Microbial colonization is a potential cause of voice prosthesis dysfunction.
Purpose of the Study:
- To investigate the microbial colonization of explanted Blom-Singer voice prostheses.
- To identify the specific microorganisms involved in valve failure.
- To explore the relationship between microbial presence and device malfunction.
Main Methods:
- Analysis of 44 explanted Blom-Singer voice prostheses from 16 patients.
- Utilized standard microbial culture techniques for identification.
- Employed scanning electron microscopy (SEM) for surface visualization.
Main Results:
- Candida species and Staphylococcus aureus were found on 43 out of 44 valves.
- SEM confirmed yeast hyphae attachment and penetration on examined valves.
- S. aureus colonization was uniquely associated with Candida and subsequent valve failure.
Conclusions:
- High prevalence of Candida and S. aureus in failed voice prostheses.
- Microbial colonization, particularly dual infection with Candida and S. aureus, is implicated in Blom-Singer valve failure.
- Further research into preventative strategies against microbial biofilm formation is warranted.