Surgery is carried out in an operating theatre. Great care is taken to make sure that operations take place in sterile conditions - free from microorganisms. The surgeon and his or her assistant wash or scrub up, and put on surgical gowns, masks,and gloves. The patient's skin is prepared by disinfecting it with an antiseptic solution. This is known as prepping (preparing)the patient. They are then covered with sterile drapes, so that only the area of the operation is exposed.
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