Correct Answer: A

Rationale: The correct action for the nurse to implement is to assist the client to a bedside commode every two hours. This approach, known as scheduled toileting, is essential in managing incontinence in clients with cognitive impairments like Alzheimer's disease. By providing regular assistance to the client to use the commode, the nurse can help maintain continence and reduce accidents. Inserting an indwelling catheter (Choice B) should be avoided if possible to prevent the risk of urinary tract infections. Using adult diapers (Choice C) should be considered a last resort and not the initial intervention. Restricting fluids in the evening (Choice D) is not appropriate as it may lead to dehydration and other complications.

Correct Answer: A

Rationale: Monitoring serum creatinine levels daily is the essential nursing action to prevent nephrotoxicity from aminoglycoside antibiotics. Aminoglycosides can cause kidney damage, so monitoring serum creatinine levels helps in detecting early signs of nephrotoxicity. Administering the antibiotic over a longer period of time (choice B) does not directly prevent nephrotoxicity. Encouraging increased fluid intake (choice C) is a general good practice but not specifically aimed at preventing nephrotoxicity. Restricting dietary protein intake (choice D) is not a direct preventive measure against aminoglycoside-induced nephrotoxicity.

Correct Answer: A

Rationale: A serum potassium level of 6.5 mEq/L is concerning in a client with CKD as it indicates hyperkalemia, which requires immediate intervention to prevent cardiac complications. Hyperkalemia can lead to life-threatening arrhythmias, particularly in patients with impaired kidney function. Serum sodium, creatinine, and blood glucose levels, while important, are not as acutely dangerous as severe hyperkalemia in this context.

Correct Answer: A

Rationale: The correct answer is A: History of alcohol use. In this scenario, obtaining the history of alcohol use is crucial as it could indicate withdrawal, which might explain the client's confusion. Alcohol withdrawal can lead to symptoms such as confusion, agitation, and disorientation. While knowing the current medication list (choice B) is important for overall patient care, in this case, alcohol withdrawal is a more likely cause of the confusion. Baseline cognitive status (choice C) is valuable for comparison but may not directly explain the sudden confusion. Family history of dementia (choice D) is less relevant in this acute situation compared to the potential immediate impact of alcohol withdrawal.

Correct Answer: B

Rationale: Serum triglycerides should be monitored closely in a client receiving TPN as they may indicate hyperlipidemia, which is a potential complication of TPN. Monitoring serum triglycerides is essential to prevent complications such as hypertriglyceridemia. Serum calcium and glucose levels are also important to monitor in clients receiving TPN, but in this scenario, serum triglycerides take priority due to the risk of hyperlipidemia.