Correct Answer: A

Rationale: The correct answer is to place the client in a negative pressure room. This action is necessary to prevent the spread of tuberculosis, as it is transmitted via airborne particles. Placing the client in droplet isolation (choice C) is not sufficient for tuberculosis, as it requires airborne precautions. Wearing a surgical mask (choice B) when entering the client's room may not provide adequate protection against airborne transmission. Placing a surgical mask on the client when transporting them (choice D) does not address the need for environmental controls to contain infectious particles.

Correct Answer: C

Rationale: The Mantoux skin test, also known as the Tuberculin Skin Test (TST), is used to confirm tuberculosis (TB) infection. This test involves injecting a small amount of tuberculin protein derivative under the top layer of the skin and then evaluating the immune system's response to the protein. A positive reaction indicates exposure to the TB bacteria. Chest X-rays are used to detect abnormalities in the lungs caused by TB but are not confirmatory. Sputum culture is used to identify the presence of TB bacteria in the sputum. MRIs are not typically used as a primary diagnostic tool for TB.

Correct Answer: A

Rationale: Correct answer: A. Checking the central line dressing daily is crucial to monitor for signs of infection around the insertion site. This practice helps in early detection of any changes such as redness, swelling, or discharge, which are indicators of a potential infection. Monitoring for signs of redness (choice B) is limited as redness alone may not always indicate an infection; other symptoms like discharge and tenderness should also be observed. Checking for abnormal breath sounds (choice C) is not directly related to monitoring central line infections. Monitoring temperature (choice D) is important for detecting systemic signs of infection but may not specifically indicate an infection related to the central line site.

Correct Answer: C

Rationale: Using a hydrocolloid dressing is the appropriate care for a stage 2 pressure ulcer because it provides a moist healing environment, promotes healing, and helps to prevent infection. Cleaning the area with normal saline (Choice A) is important but not the primary treatment for a stage 2 pressure ulcer. Applying antibiotic ointment (Choice B) may not be necessary unless there is a sign of infection. Changing the dressing daily (Choice D) may disrupt the healing process and is not recommended unless the dressing is soiled or compromised.

Correct Answer: A

Rationale: The correct answer is to administer anticoagulants. Anticoagulants help prevent further clot formation in patients with suspected DVT. Encouraging ambulation can be beneficial in preventing DVT but is not the immediate intervention for a suspected case. Compression stockings are more for DVT prevention rather than treatment. Monitoring oxygen saturation is important in assessing respiratory function but is not the primary intervention for suspected DVT.