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: Confirming the patient's allergies before administering medications is crucial for patient safety as it helps prevent adverse reactions. Checking the patient's wristband is important for identification but may not directly impact medication safety. Documenting medications after administration is necessary but does not primarily promote safety during administration. Preparing medications at the medication cart, rather than the nurse's station, is preferred to ensure accuracy and proper medication handling, but it is not directly related to confirming allergies for safety.

Correct Answer: D

Rationale: The nurse should see the patient with a hip replacement experiencing chest pain and dyspnea first because these symptoms could indicate a pulmonary embolism, which is a life-threatening condition requiring immediate attention. The other patients also need care, but urgent assessment and intervention are crucial in the case of potential pulmonary embolism to prevent serious complications or death.

Correct Answer: B

Rationale: Emptying the colostomy bag when it is half full is the most important nursing action when caring for a patient with a colostomy. This practice helps prevent leakage, reduces the risk of skin irritation, and promotes patient comfort. Monitoring for signs of infection (Choice A) is essential but not as crucial as maintaining proper colostomy care. Encouraging the patient to eat smaller, more frequent meals (Choice C) can be beneficial for colostomy patients but is not as critical as ensuring timely emptying of the colostomy bag. Applying a skin barrier to prevent irritation (Choice D) is important, but ensuring timely emptying of the colostomy bag takes precedence in preventing complications associated with a colostomy.

Correct Answer: B

Rationale: The correct answer is to administer antibiotics as prescribed. Antibiotics are the primary treatment for urinary tract infections as they help eliminate the bacteria causing the infection. Encouraging the patient to increase fluid intake (Choice A) is a supportive measure to help flush out the bacteria but doesn't directly treat the infection. Over-the-counter pain relievers (Choice C) may help with discomfort but do not address the underlying infection. Limiting physical activity (Choice D) may be recommended for some conditions but is not the primary intervention for treating a UTI.