Correct Answer: C

Rationale: Measuring the calf circumference of both legs is crucial when assessing for DVT in an immobile patient. A significant increase in the circumference of one calf compared to the other suggests the presence of a deep vein thrombosis. Option A is incorrect because rubbing the lower leg may dislodge a clot if present. Option B is incorrect as elastic stockings should not be removed frequently as this can increase the risk of clot formation. Option D is incorrect as dorsiflexing the foot can lead to pain and should not be done to assess for DVT.

Correct Answer: B

Rationale: The correct answer is to discontinue the medication and notify the healthcare provider when a patient is experiencing an allergic reaction to a medication. This action is crucial to prevent further harm to the patient. Monitoring blood pressure (choice A) or urine output (choice D) may be important but is not the priority when managing an allergic reaction. Administering an antihistamine (choice C) should only be done after discontinuing the medication and consulting with the healthcare provider.

Correct Answer: D

Rationale: The correct answer is to use a dedicated blood pressure cuff that stays in the room and is used for that patient only. Patients on contact precautions require dedicated equipment to prevent the spread of disease. Using one blood pressure cuff exclusively for the patient on contact precautions helps minimize the risk of transmitting infections to other patients. Choices A, B, and C are incorrect because while wearing protective gear and isolating the patient in a room with negative airflow are important infection control measures, using dedicated equipment for the patient on contact precautions is specifically recommended to prevent the spread of disease in this scenario.

Correct Answer: C

Rationale: The correct answer is to lock the wheels on the bed and wheelchair. This action helps prevent accidents by stabilizing the equipment during the transfer process. Having the patient use a gait belt for support (choice A) can be helpful but is not directly related to equipment safety. Encouraging the patient to hold onto a walker (choice B) is beneficial for ambulation but does not address the safety of equipment. Asking the patient to transfer independently (choice D) can pose risks, especially for a patient with limited mobility, and may not ensure safety during the transfer.

Correct Answer: B

Rationale: The correct answer is to assist the patient to sit down slowly. This intervention is appropriate for a patient experiencing dizziness when standing up, as it helps prevent falls due to orthostatic hypotension. Encouraging deep breaths (Choice A) may not address the underlying cause of dizziness, which is related to postural changes. Instructing the patient to use a walker for support (Choice C) or teaching the patient how to change positions safely (Choice D) are not the most immediate and direct interventions to address the immediate risk of falling when feeling dizzy upon standing.