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Vancomycin for treatment of invasive, multi-drug resistant Staphylococcus aureus infections
Scott D Pope1, Andrew M Roecker
1Premier, Inc., 2320 Cascade Point Blvd, Charlotte, North Carolina 28266, USA. scott_pope@premierinc.com
Abstract:
Staphylococcus aureus is a bacterial pathogen responsible for a variety of serious infections and is a frequent cause of nosocomial disease. During the last 60 years, S. aureus has developed increasing in vitro resistance to virtually all antimicrobials. In contrast, vancomycin has maintained a high degree of activity in vitro against this pathogen, although slight changes with in vitro activity could vastly change clinical activity. As a result, vancomycin has become the mainstay of therapy for invasive infections due to methicillin-resistant strains. However, clinical strains of S. aureus with intermediate resistance to vancomycin were reported in 1996, followed in 2002 with reports of isolates that were fully resistant. Although many authorities believe vancomycin remains the drug of choice for most staphylococcal-resistant infections, important issues surrounding its clinical application remain. These include the need for multiple daily dosing, intravenous administration, requirements for serum concentration monitoring, increasing resistance in vitro, modest efficacy rates and (less frequently) treatment-limiting adverse effects. This review addresses these important topics.
Insights
Staphylococcus aureus infections are rising, with increasing antimicrobial resistance. Vancomycin is a key treatment, but emerging resistance and clinical challenges necessitate a review of its use.
Area of Science:
- Infectious Diseases
- Microbiology
- Pharmacology
Background:
- Staphylococcus aureus is a major cause of serious and hospital-acquired infections.
- Increasing antimicrobial resistance in S. aureus has been observed over the past 60 years.
- Vancomycin has been the primary treatment for infections caused by methicillin-resistant S. aureus (MRSA).
Purpose of the Study:
- To review the clinical application of vancomycin for Staphylococcus aureus infections.
- To address emerging vancomycin resistance and associated clinical challenges.
- To discuss the ongoing role of vancomycin in treating resistant staphylococcal infections.
Main Methods:
- This review synthesizes current literature on Staphylococcus aureus resistance patterns.
- It examines the clinical efficacy and limitations of vancomycin therapy.
- The review discusses issues including dosing, administration, monitoring, and adverse effects.
Main Results:
- Clinical strains of S. aureus exhibiting intermediate and full resistance to vancomycin have been reported since 1996 and 2002, respectively.
- Despite resistance, vancomycin remains a crucial agent for MRSA infections.
- Challenges include dosing requirements, intravenous administration, monitoring, modest efficacy, and adverse effects.
Conclusions:
- Vancomycin is critical for treating MRSA, but its effectiveness is challenged by increasing resistance.
- Clinical use requires careful consideration of dosing, monitoring, and potential adverse events.
- Further strategies are needed to optimize vancomycin therapy and manage resistant S. aureus strains.
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