Correct Answer: C

Rationale: Correct Answer: C - Increased ability to excrete drugs. Rationale: 1. Renal insufficiency impairs kidney function, leading to decreased excretion of drugs. 2. In elderly patients with renal insufficiency, there may be compensatory mechanisms to enhance drug excretion. 3. This increased ability to excrete drugs helps prevent drug accumulation and potential toxicity. Summary: A: Increased GFR is not expected in renal insufficiency; it typically decreases. B: Serum creatinine level would likely be elevated in renal insufficiency, not normal. D: Hypokalemia is not a typical lab finding in renal insufficiency; hyperkalemia is more common.

Correct Answer: D

Rationale: Rationale: The clinical signs indicate a hypermetabolic state with tachycardia, hypotension, tachypnea, and potential fever, typical of a thyroid storm. The presence of congestive heart failure and atrial fibrillation further support this diagnosis due to the hyperthyroid state exacerbating cardiovascular symptoms. Adrenal crisis (A) would present with hypotension and shock, but not with the hypermetabolic state seen here. Myxedema coma (B) would present with hypothermia, bradycardia, and altered mental status, which are not present in this case. SIADH (C) would typically present with hyponatremia and concentrated urine, which are not seen here.

Correct Answer: B

Rationale: The correct answer is B: A proton pump inhibitor. When a patient is receiving hydrocortisone for adrenal crisis, it can lead to increased gastric acid secretion. A proton pump inhibitor helps reduce acid production and prevents gastric ulcers. Regular insulin (A) is not typically indicated in this scenario. Canagliflozin (C) is a medication used for diabetes management and is not relevant here. Propranolol (D) is a beta-blocker and may mask signs of hypoglycemia when used with insulin, which is not suitable in this case.

Correct Answer: D

Rationale: The correct answer is D: Urine osmolality. In head trauma patients, the risk of developing diabetes insipidus (DI) is high due to damage to the posterior pituitary. Monitoring urine osmolality helps identify DI early, as low urine osmolality indicates impaired concentration ability. This is crucial for prompt treatment to prevent dehydration. Choices A and B are important but not specific to endocrine disorders. Choice C is relevant for respiratory assessment, not endocrine disorders.

Correct Answer: D

Rationale: The correct answer is D: inform the provider of probable visceral perforation. This is the most urgent action as sudden abdominal pain, chills, and elevated temperature in a patient receiving peritoneal dialysis could indicate a serious complication like visceral perforation, which requires immediate medical attention to prevent further complications. Assessing peritoneal dialysate return (A) may provide some information but does not address the urgent need to address a potential visceral perforation. Checking the patient's blood sugar (B) and evaluating the patient's neurological status (C) are not priorities in this situation and do not address the potential life-threatening complication of visceral perforation.