A nurse is caring for a client who is 5 hours postoperative following a transurethral resection of the prostate (TURP). The nurse notes that the client's indwelling urinary catheter has not drained in the past hour. Which of the following actions should the nurse take first?

Choice A reason:
The Mantoux test, also known as the tuberculin skin test, is used to detect latent TB infection but is not the most reliable for confirming active pulmonary TB. It can indicate if someone has been infected with TB bacteria, but it cannot differentiate between latent and active TB.

Choice B reason:
A sputum culture for acid-fast bacillus is the gold standard for diagnosing active pulmonary TB. It involves culturing a sample of sputum (phlegm) to see if TB bacteria grow, which confirms the diagnosis. This test is the most definitive and reliable method, although it may take several weeks to obtain results.

Choice C reason:
A sputum smear can detect TB bacteria in sputum samples quickly, but it is less sensitive than a culture. It can miss cases, especially if the bacterial load is low. Therefore, while useful for initial screening, it is not as reliable as a culture for confirming active TB.

Choice D reason:
A chest x-ray can show signs suggestive of TB, such as infiltrates or cavities in the lungs, but it cannot confirm the presence of TB bacteria. It is a supportive diagnostic tool but not definitive for active TB diagnosis.

Choice A reason:
A reddened area over the sacrum is a sign of potential pressure ulcer development, which is a common complication of immobility, especially in bedridden or wheelchair-bound individuals. The sacrum is a prominent bony area that bears weight when a person is sitting or lying down, making it susceptible to pressure ulcers if proper preventative measures, such as regular repositioning, are not taken.

Choice B reason:
Difficulty hearing some types of sounds is not typically a direct complication of immobility. Hearing issues may be related to other health conditions or age-related changes but are not caused by the lack of movement associated with post-stroke immobility.

Choice C reason:
Stiffness in the lower extremities can occur due to immobility, as muscles and joints may become tight when not used regularly. However, this is more of a long-term effect and may not be as immediately concerning as pressure ulcer prevention. Regular range-of-motion exercises can help prevent stiffness.

Choice D reason:
Difficulty moving the upper extremities may be a result of the stroke itself rather than a complication of immobility. While maintaining mobility in all limbs is important, the focus of monitoring should be on complications that arise specifically due to immobility, such as pressure ulcers.