
MRSA stands for methicillin-resistant Staphylococcus
aureus. It is a type of bacterium commonly found on the skin and/or in the
noses of healthy people. Although it is usually harmless at these sites, it may
occasionally get into the body (eg through breaks in the skin such as abrasions,
cuts, wounds, surgical incisions or indwelling catheters) and cause infections.
These infections may be mild (eg pimples or boils) or serious (eg infection of
the bloodstream, bones or joints).
MRSA infections most often occur in patients in hospitals and are rarely seen among the general public. As with ordinary strains of Staphylococcus aureus, some patients harbour MRSA on their skin or nose without harm (such patients are said to be 'colonised'), whereas other patients may develop infections. Some patients are at increased risk of developing infection. They include those with breaks in their skin due to wounds (including those caused by surgery), indwelling catheters or burns, and those with certain types of deficiency in their immune system, such as low numbers of white cells in their blood.
There are several steps that may be undertaken to minimise the spread of MRSA between patients.
Hospital staff
should wash their hands scrupulously, preferably using antibacterial soap
and disposable towels.
Patients
colonised or infected with MRSA may be kept away from other patients by
being placed in separate rooms, either alone or with other patients who also
have MRSA. Access to such rooms should be restricted to essential personnel.
Hospital staff
should wear gloves and disposable gowns prior to having physical contact
with MRSA patients. Before leaving the room, they should discard these
safely, and wash their hands.
Visitors and
carers likely to have a lot of physical contact with patients should also
wear disposable gloves and gowns. All visitors should wash their hands
before leaving the room.
MRSA can survive on inanimate objects or surfaces such as linen, sinks, floors and even mops used for cleaning. For this reason, areas where MRSA patients are nursed should be thoroughly cleaned using disinfectants.
© Dr Alan Johnson
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Last updated
16/01/07
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