at least in the U.S. Or perhaps an aide... Would need more context to decide between the two.

Career Paths: Home, Health, and Recreation
... Orderly. ... any combination of the following duties in caring for patients in hospital ... experience
and may be designated by various titles, such as psychiatric aide ...
www.cabrillo.cc.ca.us/affiliate/ careers/paths/home/ca05062.htm - 8k - Cached - Similar pages

A nursing auxiliary is a member of the nursing staff who has duties such as bed-making, cleaning, bringing round the teas and meals etc.

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Note added at 2002-07-18 19:51:48 (GMT)
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Health Care Assistants (formerly known as Auxiliary Nurses) support the work of nurses through the provision of care and support to patients. They carry out routine work such as bed changing, helping patients dress, undress, eat and drink and access bathing facilities. They also help to keep wards clean and assist patients moving from one ward to another. Health Care Assistants can be based in wards, clinics and outpatient departments in hospitals, and in residential care homes. They can also be community-based, which may involve providing basic care to patients within their homes.

This is taken from one of the many links on Google.
hth

+

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Note added at 2002-07-18 23:32:49 (GMT)
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Beginning in 2002, there will be new rules for billing services as incident to a physician or other practitioner’s services. The new rules allow auxiliary personnel (e.g., physical therapists and occupational therapists) to provide services incident to the services of supervising physicians or other practitioners regardless of the employment relationship between the auxiliary personnel and the supervising practitioner. Medicare claim forms will be revised to reflect this new regulation

http://www.aapmr.org/memphys/pmrprac/medicarefee02.htm

I.e. a person with some medical training and/or experience who works under the supervision of a qualified doctor; and who can exercise responsibility up to a certain point, e.g. in field situations, emergency situations, and routine medical treatement. In some countries e.g. Malaysia "paramedics" can run whole clinics which are only visited regularly by qualified doctors. And sometimes, by virtue of their experience, can be very knowledgable and competent.

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