What is the priority when assessing a patient for possible deep vein thrombosis (DVT)?

Correct Answer: B

Rationale: The correct answer is to measure the calf circumference of both legs when assessing a patient for possible DVT. An increase in calf circumference in one leg can indicate the presence of a DVT. Option A is incorrect because dorsiflexing the foot and checking for pain are not primary assessments for DVT. Option C is incorrect as redness of the skin may not always be present in cases of DVT. Option D is incorrect as performing a Doppler ultrasound scan is usually done after clinical assessment and to confirm the diagnosis, not as the initial priority assessment.

Correct Answer: B

Rationale: The correct method to reduce the risk of infection when handling a urinary catheter is to maintain sterile technique when inserting the catheter. Sterile technique helps prevent introducing pathogens into the urinary system, reducing the risk of infection. Choice A is incorrect because cleaning the catheter tubing with soap and water is not sufficient for preventing infection. Choice C is incorrect as clean gloves and technique are not enough; sterile technique is necessary. Choice D is incorrect as flushing the catheter tubing with sterile water, though important for maintaining catheter patency, does not address the need for sterile technique during insertion to prevent infection.

Correct Answer: B

Rationale: Encouraging stretching exercises is the most appropriate nursing intervention to help a patient with chronic pain maintain mobility. Stretching exercises can improve flexibility, prevent stiffness, and promote better range of motion in patients with chronic pain. Providing opioids (Choice A) may help control pain but does not directly address mobility. Teaching the patient to use assistive devices (Choice C) may be beneficial but does not focus on improving mobility directly. Recommending complete bed rest (Choice D) can lead to deconditioning and further loss of mobility, which is not recommended for chronic pain management.

Correct Answer: B

Rationale: Providing the immobile patient with a special mattress is an effective way to prevent pressure ulcers. Special mattresses help distribute pressure evenly and reduce the risk of developing pressure ulcers by relieving pressure on sensitive areas. Turning the patient every 4 hours (Choice A) is a standard practice to prevent pressure ulcers but may not be as effective as using a special mattress. Elevating the patient's legs (Choice C) can help with circulation but may not directly prevent pressure ulcers. Limiting the patient's movement (Choice D) can lead to other complications and is not a recommended method for preventing pressure ulcers.

Correct Answer: B

Rationale: Administering oxygen via nasal cannula as prescribed is the most appropriate action to improve the patient's oxygenation in COPD. Oxygen therapy helps maintain adequate oxygen levels in the blood, which is crucial for managing COPD. Encouraging the use of incentive spirometry, assisting with coughing and deep breathing exercises, and positioning the patient in high Fowler's position are all beneficial interventions, but administering oxygen is the priority for immediate oxygenation support in COPD.