A nurse is caring for a client who has active pulmonary tuberculosis. Which of the following actions should the nurse take?

A. Incorrect. Restricting fresh flowers from the client's room is not necessary for infection control purposes. However, some clients with pulmonary tuberculosis may have hypersensitivity reactions to certain plants or flowers, so the nurse should assess the client's allergies before allowing them in the room. B. Incorrect. Maintaining a distance of 1.8 m (6 feet) from the client is not sufficient to prevent transmission of tuberculosis. Visitors should also wear a HEPA respirator and limit their contact time with the client. C. Incorrect. A surgical mask is not adequate to protect the nurse from inhaling airborne droplet nuclei that contain Mycobacterium tuberculosis. The nurse should wear a high-efficiency particulate air (HEPA) respirator when providing client care. D. Correct. Assigning the client to a private room with negative air pressure is the most effective way to prevent the spread of tuberculosis to other clients and staff members. The room should have at least six air exchanges per hour and an exhaust system that vents directly to the outside.