The nurse is planning preoperative care for a client who has a fractured wrist. Which of the following should the nurse include in the client's plan of care?

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.

Choice A reason:
The location of the burn is crucial in assessing the severity because burns to the face, neck, and upper extremities can compromise vital functions. For example, burns to the face may affect the airway and respiratory system, while burns to the hands can impair mobility and the ability to perform daily tasks. The depth of the burn at these locations also affects the severity assessment, as deeper burns can damage underlying tissues and structures.

Choice B reason:
While the age of the client can influence the healing process and the risk of complications, it is not the primary factor in assessing the initial severity of the burn. However, age is considered when planning treatment and rehabilitation, as children and the elderly may have different healing rates and responses to therapy.

Choice C reason:
The cause of the burn can provide context for potential complications, such as inhalation injury from a fire or chemical exposure. However, the immediate assessment of severity is more focused on the observable damage to the skin and underlying tissues rather than the cause of the burn.

Choice D reason:
The client's associated medical history is important for understanding potential risks and complications during the healing process, but it is not the primary factor in assessing the severity of the burn. The medical history will be more relevant when considering the client's overall prognosis and planning long-term care.