Correct Answer: A

Rationale: A glomerular filtration rate (GFR) of 14 mL/min is significantly low, indicating poor kidney function and the need for hemodialysis to remove waste products effectively. BUN, serum magnesium, and serum phosphorus levels are important in assessing kidney function and electrolyte balance but are not direct indicators for the initiation of hemodialysis. BUN (blood urea nitrogen) reflects the kidney's ability to filter waste products, serum magnesium levels are important for muscle and nerve function, and serum phosphorus levels are vital for bone health.

Correct Answer: C

Rationale: The correct answer is C: 'Use a new catheter each time you perform self-catheterization.' It is essential to use a new, sterile catheter each time to prevent infection during the procedure. Choice A is incorrect because cleaning the catheter with alcohol may not be sufficient to prevent infection. Choice B is incorrect because self-catheterization is typically done in a clean, private area, not necessarily on the toilet. Choice D is incorrect because lubricating the catheter tip with petroleum jelly is a common practice but not as crucial as using a new catheter each time to prevent infection.

Correct Answer: B

Rationale: Assisting the client to splint the incision with a pillow while coughing is the correct action in this scenario. This intervention helps reduce pain and prevent wound dehiscence, which is the partial or complete separation of the layers of a surgical wound. Monitoring urinary output is important but not the priority at this immediate postoperative stage. Providing a clear liquid diet may be indicated later but is not the most immediate concern. Encouraging ambulation is beneficial for preventing complications like deep vein thrombosis, but splinting the incision is more crucial at this early postoperative period.

Correct Answer: D

Rationale: The correct answer is D. Exercising for 30 minutes at least 5 days a week helps manage hypertension by promoting cardiovascular health. Statements A, B, and C are incorrect. Avoiding foods high in potassium is not necessary unless specifically advised by a healthcare provider. Checking blood pressure once a week is not frequent enough for effective monitoring. Increasing dairy product intake is not a recommended approach to managing hypertension.

Correct Answer: A

Rationale: Corrected Question: To assess fluid balance in a patient receiving diuretics, monitoring daily weight is the most accurate method. This is because diuretics primarily affect fluid levels in the body, leading to changes in weight due to fluid loss. While monitoring intake and output, checking for edema, and monitoring blood pressure are important aspects of patient care, they do not provide as direct and accurate information about fluid balance as daily weight monitoring specifically in patients on diuretics.