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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
Methicillin resistant Staphylococcus aureus contamination of phlebotomy tourniquets and faucets
T Abeywickrama1, K Amarasinghe, S Wijerathne
1BSc. Medical Laboratory Sciences undergraduates, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka. kamani.lk@gmail.com
Introduction:
Methicillin resistant Staphylococcus aureus (MRSA) is transmitted through direct contact or fomites. The most important means of nosocomial spread is by hospital personnel. However, fomites are being increasingly recognized as sources of nosocomial infection.
Objectives:
Our aim was to describe the MRSA contamination rate of phlebotomy tourniquets and faucets in a tertiary care hospital and to compare the contamination of plastic tourniquets with that of fabric tourniquets.
Method:
A cross-sectional study was carried out in the general wards of a tertiary care hospital in the Colombo District. Two hundred tourniquets were collected and 100 faucets were swabbed and cultured on CHROMagar™ MRSA medium (CHROMagar Microbiology). Contamination rates of 50 plastic tourniquets and 50 fabric tourniquets were compared.
Results:
MRSA grew in 26% of tourniquets. Majority were plastic tubes. MRSA contamination of tourniquets did not significantly differ by ward (p>0.4). MRSA was found on 26% of faucets. Contamination rate was highest in the common wards for dermatology, dental, rheumatology, and neurology (55.6%), followed by gynaecology (45.2%), cardiology (33.3%), surgery (18.8%), psychiatry (11.1%), and medicine (5.6%). There was a significant difference in rates of contamination of faucets in the different wards (p<0.01). There was no significant difference in the colony count per surface area of the two types of tourniquets after a single use.
Conclusions:
MRSA contamination rates of tourniquets and faucets were high. Single-use plastic tourniquets were much less contaminated with MRSA than reused tourniquets.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) frequently contaminates hospital tourniquets and faucets. Plastic tourniquets showed lower MRSA contamination than fabric ones, highlighting potential infection control improvements.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Hospital Epidemiology
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant cause of nosocomial infections, often spread by healthcare personnel and contaminated surfaces (fomites).
- Understanding fomite contamination is crucial for preventing healthcare-associated MRSA transmission.
Purpose of the Study:
- To determine the contamination rates of phlebotomy tourniquets and faucets with MRSA in a tertiary care hospital.
- To compare MRSA contamination between plastic and fabric tourniquets.
Main Methods:
- A cross-sectional study involving the collection and culturing of 200 tourniquets (50 plastic, 50 fabric) and swabbing of 100 faucets.
- Samples were cultured on CHROMagar™ MRSA medium.
Main Results:
- MRSA was detected on 26% of tourniquets and 26% of faucets.
- Plastic tourniquets showed a trend towards lower contamination compared to fabric ones, though not statistically significant after single use.
- Faucet contamination varied significantly by hospital ward, with highest rates in dermatology, dental, rheumatology, and neurology.
Conclusions:
- High rates of MRSA contamination were observed on both tourniquets and faucets.
- Single-use plastic tourniquets appear to be less contaminated with MRSA than reusable fabric tourniquets, suggesting a potential benefit for infection control.
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