A nurse is admitting a client who has pertussis. Which of the following types of transmission-based precautions should the nurse initiate?

A) Exposed bone: Exposed bone is a manifestation of a stage 4 pressure ulcer, where full-thickness skin loss occurs, exposing muscle, tendon, or bone. In stage 3 pressure ulcers, the skin loss extends into the subcutaneous tissue, but it does not reach the level of exposing underlying structures like bone.

B) Blood-filled blisters: Blood-filled blisters can occur in various stages of pressure ulcers, but they are not specific to stage 3. They may be present in stage 1 or stage 2 pressure ulcers as well.

C) Necrotic subcutaneous tissue: This is the correct manifestation of a stage 3 pressure ulcer. Stage 3 pressure ulcers involve full-thickness skin loss with visible necrosis or damage to the subcutaneous tissue. The ulcer may appear as a deep crater with or without undermining of adjacent tissue.

D) Partial-thickness skin loss: Partial-thickness skin loss is characteristic of stage 2 pressure ulcers, where the ulcer extends through the epidermis and into the dermis but does not involve deeper tissue layers like the subcutaneous tissue.

A) An older adult who is confused and has urinary frequency:
This client is at the greatest risk for a fall due to several factors. Confusion increases the likelihood of disorientation and impaired judgment, leading to accidents. Urinary frequency may necessitate frequent trips to the bathroom, increasing the chances of falls, especially if the client is disoriented or unsteady on their feet.

B) An older adult with hearing impairment:
While hearing impairment can contribute to a fall risk by limiting the client's ability to hear warnings or instructions, it may not pose as immediate a risk as confusion and urinary frequency, which directly affect mobility and judgment.

C) A client who has a dressing on his foot due to a pressure ulcer:
While having a dressing on the foot due to a pressure ulcer increases the risk of falls by potentially affecting the client's gait and balance, it may not be as significant a risk factor as confusion and urinary frequency, which directly impact the client's ability to safely navigate their environment.

D) A client who has osteoarthritis and uses a walker:
Although osteoarthritis and the use of a walker can contribute to mobility issues and an increased risk of falls, they may not present as immediate a risk as confusion and urinary frequency, which can lead to more unpredictable and hazardous situations.