<prompt> Universal standard precautions to be observed by surgeons for the prevention of hospital acquire HIV infection include the following except:Wearing gloves and other barrier precautionWashing hands on contaminationHandling sharp instruments with carePre-operative screening of all patients of HIV  <response>: Ans. d Pre-operative screening of all patients of HIVUniversal precautions: It refers to practice in medicine of avoiding contact with; patients bodily fluids, by means of wearing non porous articles such as medical gloves, googles and face shields. Includes good hygienic habits, such as hand washing and; use of gloves and other barriers, correct handling of needles; and sclapels and aseptic techniques. Typically practices against blood, Semen, vaginal secretions, synovial fluid, CSF, Pleural fluid and peritoneal fluid and Pericardial fluid. 