Correct Answer: A

Rationale: The correct answer is A: Chest pain, shortness of breath, and tachycardia. These are classic early signs of a pulmonary embolism. Chest pain may be sudden and sharp, worsened by deep breathing or coughing. Shortness of breath can be sudden and severe. Tachycardia (rapid heart rate) is another common symptom. Choices B, C, and D are incorrect as they do not represent typical early signs of a pulmonary embolism.

Correct Answer: A

Rationale: For a patient with diarrhea, the priority is to manage dehydration by providing oral fluids and monitoring stool consistency. Option B suggesting administering antidiarrheal medications is not recommended as it may prolong the infection by preventing the body from expelling the infectious agent. Option C is incorrect because antibiotics are not routinely indicated for diarrhea unless there is a specific bacterial infection. Option D is not the most appropriate initial intervention for managing diarrhea since a low-fiber diet may not provide adequate nutrition for the patient or help resolve the underlying cause of diarrhea.

Correct Answer: B

Rationale: The correct first step before administering a blood transfusion is to verify that the client's blood type matches the blood product. This step is crucial to prevent transfusion reactions due to incompatibility. Choice A is incorrect because blood should not be administered through an IV push for a blood transfusion. Choice C is incorrect because it is not necessary for the client to eat before a blood transfusion. Choice D is incorrect because administering a diuretic is not a standard practice before starting a blood transfusion.

Correct Answer: B

Rationale: The correct answer is B: 'Choose lean cuts of beef.' Selecting lean cuts of beef is crucial in reducing solid fat consumption for individuals with high cholesterol levels. Lean cuts contain less saturated fat compared to fatty cuts, thus aiding in managing cholesterol levels. Option A is incorrect as oils with trans fats should be avoided since they contribute to unhealthy fats. Option C is not directly related to reducing solid fat consumption. Option D, while suggesting a leaner meat option, does not address the issue of solid fat consumption as directly as choosing lean cuts of beef.

Correct Answer: D

Rationale: The LPN should question the assignment of replacing the PCA pump cartridge and tubing as it is outside the LPN's scope of practice. LPNs are not trained to handle tasks related to PCA pumps, which involve medication administration and monitoring that are typically within the RN's responsibilities. Assisting a postop client with an incentive spirometer (Choice A), collecting a clean catch urine specimen (Choice B), and providing nasopharyngeal suctioning for a client with pneumonia (Choice C) are all tasks that fall within the LPN's scope of practice and do not require questioning by the LPN.