Correct Answer: C

Rationale: Placing a pillow between the legs is essential post-total hip arthroplasty to prevent adduction of the hip joint, reducing the risk of dislocation. Choices A, B, and D are incorrect. Using a walker while walking is encouraged for support and stability. Keeping the hip flexed at 90° while sitting can increase the risk of hip dislocation. Crossing legs at the ankles when sitting may also lead to hip dislocation.

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.

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: C

Rationale: The correct answer is C: Persistent cough. Enalapril is known to cause a persistent dry cough as a side effect. This adverse reaction is due to the accumulation of bradykinin in the lungs, leading to irritation and cough. The nurse should report this symptom to the provider for further evaluation and possible medication adjustment. Choices A, B, and D are not directly associated with enalapril use. While a blood pressure of 150/80 mm Hg is elevated and should be monitored, it is not a direct side effect of enalapril. Swelling in the legs and a heart rate of 72 beats per minute are also not typically related to enalapril use and should be assessed but are not the priority findings to report in this scenario.

Correct Answer: A

Rationale: The correct answer is A: 'Heart disease and stroke.' Untreated hypertension can lead to various complications, including heart disease and stroke. These are common outcomes of long-term high blood pressure. Choice B, 'Kidney failure and vision loss,' is incorrect as kidney failure and vision loss are more commonly associated with diabetic complications rather than untreated hypertension. Choice C, 'Pulmonary embolism and arrhythmias,' while serious, are not among the primary complications of untreated hypertension. Choice D, 'Blood clots and gastrointestinal bleeding,' are not typical complications of untreated hypertension but can occur due to other conditions such as blood clotting disorders or gastrointestinal diseases.