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Chlorhexidine--pharmacology and clinical applications
1Department of Anaesthetics, University of Sydney, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.
Anaesthesia and Intensive Care
|August 22, 2008
Summary
Chlorhexidine is a versatile antiseptic used in healthcare for skin preparation and infection prevention. While generally safe, it can cause rare hypersensitivity reactions and contact dermatitis in some patients.
Area of Science:
- Antimicrobial agents
- Dermatology
- Infectious disease prevention
Background:
- Chlorhexidine is a broad-spectrum antiseptic widely utilized in healthcare settings.
- Its efficacy is enhanced when combined with alcohol, offering persistent antimicrobial effects due to protein binding.
- Applications include handwashing, surgical skin preparation, and intravascular access site antisepsis.
Purpose of the Study:
- To review the pharmacology and microbiology of chlorhexidine.
- To discuss its diverse clinical applications in healthcare.
- To examine the adverse effects, including hypersensitivity and contact dermatitis.
Main Methods:
- Literature review of existing studies on chlorhexidine.
- Analysis of pharmacological and microbiological data.
- Evaluation of clinical trial outcomes and adverse event reports.
Main Results:
- Chlorhexidine demonstrates strong antimicrobial activity and prolonged efficacy.
- Impregnated catheters can decrease catheter-related bloodstream infections.
- Contact dermatitis is uncommon in healthcare workers but occurs in 2.5-5.4% of atopic patients.
Conclusions:
- Chlorhexidine is a valuable antiseptic with established clinical benefits.
- Awareness of potential hypersensitivity reactions is crucial for accurate diagnosis and reporting.
- Further research may elucidate mechanisms of rare adverse events.
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