Which of the following questions is most important to ask a client who might have been exposed to HIV after being sexually assaulted?

Choice A reason:
Instructing the client to eat cooked foods only is a necessary precaution for immunosuppressed individuals. Cooking foods thoroughly can help eliminate harmful bacteria and other pathogens that could cause infection in a person with a weakened immune system.

Choice B reason:
Restricting visitors who have active infections is crucial in preventing the transmission of potentially harmful pathogens to the immunosuppressed client. Even minor infections in healthy individuals can be severe for someone with a compromised immune system.

Choice C reason:
Disposing of all linen in the trash after use is not a standard precaution for immunosuppressed clients. Used linens should be handled according to the healthcare facility's infection control policies, which often include laundering and not simply discarding in the trash.

Choice D reason:
Limiting the client from bathing daily is not a necessary precaution for immunosuppression. Maintaining good personal hygiene is important, and there is no need to restrict regular bathing unless there is a specific contraindication.

Choice E reason:
Donning a mask, gloves, and gown when caring for an immunosuppressed client can be part of standard precautions, especially if the client is in a protective environment or if the nurse is performing a procedure that has a high risk of contact with bodily fluids or if the client has a known infection.

Choice A Reason:
A 10 mm wheal is not indicative of TB infection. A wheal is a raised, often itchy area of skin that usually signifies an allergic reaction, not an infection. The TST looks for induration, which is a firm swelling, as a sign of TB infection.

Choice B Reason:
A 5 mm induration is considered positive in certain high-risk groups, such as people living with HIV, recent contacts of TB patients, or those with a history of organ transplants. For individuals without these risk factors, a 5 mm induration is not considered a positive result.

Choice C Reason:
A 15 mm induration is considered a positive TST result for individuals with no known risk factors for TB. This indicates that the person's immune system has reacted to the tuberculin purified protein derivative (PPD) injected under the skin, suggesting exposure to TB bacteria.

Choice D Reason:
Erythema, or redness of the skin, is not measured when interpreting TST results. The test measures induration, which is a palpable, raised, hardened area or swelling. Therefore, a 4 mm erythema does not indicate TB infection.