Correct Answer: D

Rationale: The correct answer is to keep the cord stump dry until it falls off. This is important to promote natural healing and prevent infection. Choice A is incorrect because cleaning the cord with hydrogen peroxide daily can actually delay healing and increase the risk of infection. Choice B is incorrect as the cord stump typically falls off within 1 to 3 weeks, not in 5 days. Choice C is incorrect because a cord stump turning black is a normal part of the healing process and does not necessarily indicate a problem requiring immediate provider contact.

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: 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: B

Rationale: To prevent dislocation of the prosthesis after hip replacement surgery, it is essential to avoid bending the hip more than 90 degrees. This precaution helps maintain the stability of the hip joint and reduces the risk of prosthesis dislocation. Crossing legs at the knees (Choice A) can increase pressure on the hip joint, leading to instability. Sitting with legs elevated (Choice C) and avoiding placing a pillow under the knees (Choice D) do not directly address the risk of prosthesis dislocation.

Correct Answer: A

Rationale: The correct answer is A: 'Apply counter-pressure for back pain.' Counter-pressure involves applying pressure to the lower back to alleviate pain during labor. This technique is a form of cutaneous stimulation, which can help with pain relief. Choice B, deep breathing exercises, is a form of relaxation technique and does not directly involve cutaneous stimulation. Choice C, visualizing the baby's head, is a mental imagery technique and does not involve physical stimulation of the skin. Choice D, massage therapy, is a tactile stimulation technique but is not specifically focused on back pain relief through counter-pressure.