Correct Answer: C

Rationale: The correct answer is C. Partial thromboplastin time (PTT) is the laboratory value that should be monitored to evaluate the effectiveness of heparin therapy. PTT reflects the intrinsic pathway of coagulation and is specifically sensitive to heparin's anticoagulant effects. Monitoring the PTT helps ensure that the client is within the therapeutic range to prevent clot formation without increasing the risk of bleeding. Choices A, B, and D are incorrect because while they are important laboratory values in other contexts, they are not specifically used to monitor the effectiveness of heparin therapy.

Correct Answer: D

Rationale: The correct way to collect a 24-hour urine specimen is to discard the first morning void and then start the collection. Choice A is incorrect because refrigeration is not typically necessary for a 24-hour urine specimen. Choice B is incorrect as the client needs to discard the first void. Choice C is incorrect; while collecting urine for 24 hours is correct, keeping it on ice is not standard procedure.

Correct Answer: A

Rationale: The correct response is to acknowledge the client's question and open the door for further discussion by asking if they have questions about dying. This approach allows the nurse to address the client's concerns and fears, promoting open communication and providing emotional support. Choices B and C do not encourage further dialogue about the client's feelings and concerns regarding death. Choice D briefly acknowledges the question but does not actively invite the client to express their thoughts and emotions regarding dying.

Correct Answer: D

Rationale: In acute glomerulonephritis, maintaining fluid balance is the priority to prevent complications like fluid overload or dehydration. Monitoring urine output within the range of 1 to 2 ml/kg/hr is crucial in assessing renal function. While activity tolerance, skin integrity, and nutritional status are important aspects of care, fluid balance takes precedence due to its direct impact on the renal condition and overall health outcome for the child.

Correct Answer: C

Rationale: The correct action for the nurse to take first when a client with COPD reports difficulty breathing while receiving oxygen is to check the client's oxygen saturation level. This helps in determining the adequacy of oxygenation and identifying the cause of the breathing difficulty. Increasing the oxygen flow rate (Choice A) may not be appropriate without knowing the current oxygen saturation level. Instructing the client to breathe deeply and cough (Choice B) may not address the immediate need for oxygen assessment. Placing the client in a high-Fowler's position (Choice D) can help with breathing but should come after ensuring proper oxygenation.