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[Infections associated with intra- and extravascular catheters: factors involved in microorganism-biomaterial
L Baldassarri1, A Gelosia, G Donelli
1Laboratorio di Ultrastrutture, Istituto Superiore di Sanità, Roma.
Abstract:
Infections is one of the most common cause of catheter failure as well as the most difficult to manage, most often requiring catheter removal. Staphylococcus is the etiologic agent of such infections more frequently isolated, particularly Staphylococcus epidermidis. Several factors have been suggested to be involved in bacteria-biomaterial interactions such as catheter surface morphology, molecular biofilm and bacterial virulence features. Different strategies have been tried to avoid the development to catheter-associated infections: among them adsorption of antibiotic molecules to the catheter surface might represent a successful tool to improve catheter implant life.
Insights
Catheter infections, often caused by Staphylococcus epidermidis, lead to device failure. Adsorbing antibiotics to catheter surfaces may prevent these infections and prolong device use.
Area of Science:
- Medical Microbiology
- Biomaterials Science
- Infectious Diseases
Background:
- Catheter failure is frequently caused by infections, necessitating device removal.
- Staphylococcus, particularly Staphylococcus epidermidis, is a common cause of catheter-associated infections.
- Bacteria-biomaterial interactions are influenced by catheter surface properties, biofilm formation, and bacterial virulence.
Purpose of the Study:
- To explore strategies for preventing catheter-associated infections.
- To investigate the potential of antibiotic adsorption on catheter surfaces as a preventative measure.
Main Methods:
- Review of existing literature on catheter infections and prevention strategies.
- Analysis of factors contributing to bacteria-biomaterial interactions.
Main Results:
- Infections are a primary cause of catheter failure, often requiring removal.
- Staphylococcus species, especially S. epidermidis, are frequently implicated in these infections.
- Antibiotic molecule adsorption to catheter surfaces is a promising strategy to enhance implant longevity.
Conclusions:
- Catheter-associated infections pose a significant clinical challenge.
- Targeting bacteria-biomaterial interactions is crucial for infection prevention.
- Antibiotic-coated catheters represent a viable approach to reduce infection rates and improve patient outcomes.