A nurse is caring for a client who has AIDS and is experiencing wasting syndrome. Which of the following actions should the nurse take to prevent malnutrition?

A) Double-bag the client's trash before removing it from the room: While double-bagging is a precaution used in certain infections to prevent contamination, it is not necessary for influenza. Influenza spreads via respiratory droplets rather than contact with contaminated objects. Standard waste disposal methods are typically sufficient to manage the risk of contamination from trash.

B) Place the client in a negative air pressure room with 6 to 12 air exchanges per hour: Negative air pressure rooms are designed to contain airborne pathogens by preventing contaminated air from escaping the room. Diseases such as tuberculosis or measles require this level of isolation. However, influenza spreads through droplets that settle quickly rather than remaining airborne, making negative air pressure rooms unnecessary for influenza isolation.

C) Ensure all air in the client's room is filtered through a HEPA filter: HEPA (High-Efficiency Particulate Air) filters are used to trap airborne particles. For influenza, which is spread by larger respiratory droplets, such filtration is not needed. The droplets are too large to remain suspended in the air and are typically spread through close contact, rather than requiring air filtration.

D) Wear a surgical mask when within 1 m (3 ft) of the client: This is the most appropriate precaution. Influenza is primarily spread through respiratory droplets that can travel about 1 meter (3 feet) when a person coughs, sneezes, or talks. Wearing a surgical mask within this distance helps prevent inhaling these droplets, thus reducing the risk of transmission. This aligns with droplet precautions which are standard for managing influenza.

A) Contact dermatitis: This condition results from an allergic reaction or irritation caused by contact with a substance, such as chemicals, detergents, or allergens. It is not a communicable skin infection and does not spread from person to person.

B) Actinic keratoses: These are rough, scaly patches on the skin caused by prolonged exposure to ultraviolet (UV) rays. They are considered precancerous lesions and are not contagious. They result from environmental factors rather than person-to-person transmission.

C) Psoriasis: This is a chronic autoimmune condition that leads to the rapid buildup of skin cells, causing scaling on the skin's surface. It is not contagious and does not spread through person-to-person contact. Psoriasis is an inherited condition influenced by immune system triggers.

D) Herpes zoster: Also known as shingles, this condition is caused by the reactivation of the varicella-zoster virus (the same virus that causes chickenpox). While shingles itself is not spread from person to person, the virus can be transmitted from a person with shingles to someone who has never had chickenpox, potentially causing chickenpox in the latter individual. The virus is spread through direct contact with the fluid from the blisters.