Correct Answer: B

Rationale: The correct answer is B: Serum ammonia level. Lactulose is used to lower serum ammonia levels in clients with chronic liver disease, particularly in cases of hepatic encephalopathy. Monitoring serum ammonia levels is crucial to evaluate the effectiveness of lactulose in managing hepatic encephalopathy. Choices A, C, and D are incorrect because they are not directly related to the action or evaluation of lactulose in chronic liver disease.

Correct Answer: B

Rationale: The correct answer is B: Serum ammonia level. Lactulose is used to lower serum ammonia levels in clients with chronic liver disease, particularly in cases of hepatic encephalopathy. Monitoring serum ammonia levels is crucial to evaluate the effectiveness of lactulose in managing hepatic encephalopathy. Choices A, C, and D are incorrect because they are not directly related to the action or evaluation of lactulose in chronic liver disease.

Correct Answer: D

Rationale: The correct answer is to increase the humidity of the oxygen source. This action helps thin thick secretions, making them easier to clear from the tracheostomy tube. Increasing fluid intake (Choice A) can be beneficial in some cases but addressing humidity is more specific to managing thick secretions in a client with a tracheostomy. Tracheal suctioning (Choice B) should be done after attempting to thin the secretions with increased humidity. Administering a mucolytic agent (Choice C) is a possible intervention but typically comes after addressing humidity and before resorting to suctioning to avoid unnecessary invasiveness.

Correct Answer: A

Rationale: The correct answer is A: Weight-bearing exercise. Weight-bearing exercise helps build and maintain bone density, which is critical in preventing osteoporosis. Activities like aerobic exercises, stretching, and low-impact exercises such as swimming are beneficial for overall fitness but do not directly contribute to improving bone strength, making them less effective in preventing osteoporosis.

Correct Answer: A

Rationale: Proper care of the residual limb is essential in preventing complications like infection or poor healing. By choosing 'All of the above,' the nurse ensures that the client receives comprehensive care. Inspecting the skin for redness is crucial as it can help in early detection of infections. Using a residual limb shrinker helps reduce swelling and maintain proper shaping of the limb. Washing the stump with soap and water on a daily basis is important for hygiene and preventing infections. Therefore, all the recommendations (choices A, B, and C) are essential for the client's care, making choice A the correct answer. Choice D is incorrect as it does not encompass all the necessary recommendations for the client's care.