The patient is admitted with acute kidney injury from a postrenal cause. Acceptable treatments for that diagnosis include: (Select all that apply.)

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Question 1 of 9

The patient is admitted with acute kidney injury from a postrenal cause. Acceptable treatments for that diagnosis include: (Select all that apply.)

Correct Answer: A

Rationale: The correct answer is A. Bladder catheterization helps relieve urinary obstruction, a common postrenal cause of acute kidney injury. It allows urine to drain freely from the bladder. - B: Increasing fluid volume intake may worsen the condition by increasing the pressure on the obstructed kidneys. - C: Ureteral stenting is used for intrarenal causes, not postrenal causes. - D: Placement of nephrostomy tubes bypasses the obstruction but is usually reserved for more severe cases.

Question 2 of 9

A patient has been on daily, high-dose glucocorticoid therapy for the treatment of rheumatoid arthritis. His prescription runs out before his next appointment with his physician. Because he is asymptomatic, he thinks it is all right to withhold the medication for 3 days. What is likely to happen to this patient?

Correct Answer: A

Rationale: The correct answer is A: He will go into adrenal crisis. Rationale: 1. Glucocorticoids suppress the body's natural production of cortisol. 2. Abruptly stopping high-dose glucocorticoid therapy can lead to adrenal insufficiency. 3. Adrenal crisis can result in symptoms like weakness, fatigue, hypotension, and potentially life-threatening consequences. 4. This patient, being on high-dose glucocorticoid therapy, is at risk for adrenal crisis if he abruptly stops the medication. Summary: B: Thyroid storm is not related to abruptly stopping glucocorticoid therapy. C: Autoimmune disease remission is unlikely to occur within 3 days of stopping medication. D: It is not appropriate to stop high-dose glucocorticoid therapy abruptly, as it can lead to adverse effects like adrenal crisis.

Question 3 of 9

In the management of diabetic ketoacidosis and hyperosmolar hyperglycemic syndrome, when is an intravenous (IV) solution that contains dextrose started?

Correct Answer: D

Rationale: Correct Answer: D Rationale: In diabetic emergencies, starting IV dextrose at 250 mg/dL prevents hypoglycemia while resolving ketoacidosis. Below 250 mg/dL, the body can use endogenous glucose, so IV dextrose is not necessary. Summary: A: Incorrect. Normal saline may be used for initial fluid resuscitation but does not address the need for glucose. B: Incorrect. Starting dextrose at 70 mg/dL may lead to unnecessary hyperglycemia and complications. C: Incorrect. Waiting until 150 mg/dL delays the provision of necessary glucose for metabolic functions.

Question 4 of 9

Which of the following laboratory values would be more common in patients with diabetic ketoacidosis?

Correct Answer: A

Rationale: The correct answer is A (Blood glucose >1000 mg/dL) because diabetic ketoacidosis is characterized by severe hyperglycemia. High blood glucose levels (>1000 mg/dL) are common due to insulin deficiency leading to increased glucose production. B: Negative ketones in the urine would be incorrect as DKA results in ketone production, leading to ketonuria. C: Normal anion gap would be incorrect as DKA typically presents with an elevated anion gap metabolic acidosis due to ketone accumulation. D: pH 7.24 would be incorrect as DKA would present with a lower pH due to metabolic acidosis.

Question 5 of 9

A normal urine output is considered to be

Correct Answer: D

Rationale: The correct answer is D: 1 to 2 L/day. Normal urine output typically ranges from 1 to 2 liters per day, which is considered adequate for maintaining proper hydration and eliminating waste products. A: 80 to 125 mL/min is too low for daily output. B: 180 L/day is excessively high and unrealistic. C: 80 mL/min is also too low for daily urine output. Therefore, D is the most appropriate choice based on standard guidelines for urine excretion.

Question 6 of 9

The nurse is caring for a patient who suffered a head trauma following a fall. The patient’s heart rate is 112 beats/min and blood pressure is 88/50 mm Hg. The patient has poor skin turgor and dry mucous membranes. The patient is confused and restless. The following laboratory values are reported: serum sodium is 115 mEq/L; blood urea nitrogen (BUN) 50 mg/dL; and creatinine 8 mg/dL. The findings are consistent with which disorder?

Correct Answer: A

Rationale: The correct answer is A: Cerebral salt wasting. This is indicated by the low serum sodium level (115 mEq/L), which can occur in patients with head trauma and lead to excessive sodium loss through the kidneys. This results in hypovolemia, leading to low blood pressure and tachycardia. The elevated BUN (50 mg/dL) and creatinine (8 mg/dL) levels suggest dehydration and renal impairment due to volume depletion. The patient's poor skin turgor, dry mucous membranes, confusion, and restlessness further support the diagnosis of cerebral salt wasting. Summary: B: Diabetes insipidus is characterized by excessive urination and thirst due to insufficient production of antidiuretic hormone (ADH). This patient's symptoms are not consistent with diabetes insipidus. C: Syndrome of inappropriate secretion of antidiuretic hormone (SIADH) is characterized by excessive release of ADH, leading to water retention and

Question 7 of 9

Mechanisms for development of diabetes insipidus include which of the following? (Select all that apply.)

Correct Answer: A

Rationale: The correct answer is A: ADH deficiency. Diabetes insipidus is caused by a deficiency of antidiuretic hormone (ADH), leading to excessive urine production and thirst. ADH is responsible for regulating water reabsorption in the kidneys. When ADH levels are low or absent, the kidneys cannot concentrate urine effectively, resulting in excessive urine output. Explanation for why other choices are incorrect: B: ADH excess would not lead to diabetes insipidus, as it would result in increased water reabsorption and concentrated urine. C: ADH insensitivity refers to a condition where the body does not respond to ADH, but it does not cause diabetes insipidus. D: ADH replacement therapy is actually a treatment for diabetes insipidus, not a mechanism for its development.

Question 8 of 9

The patient is admitted with complaints of general malaise and fatigue, along with a decreased urinary output. The patient’s urinalysis shows coarse, muddy brown granular casts and hematuria. The nurse determines that the patient has:

Correct Answer: C

Rationale: The correct answer is C: intrarenal disease, probably acute tubular necrosis. The presence of coarse, muddy brown granular casts and hematuria in the urinalysis indicates damage to the renal tubules, which is characteristic of acute tubular necrosis. This condition is a type of intrarenal disease where there is direct damage to the kidney tubules, leading to decreased urinary output and symptoms like malaise and fatigue. Prerenal and postrenal conditions do not typically present with granular casts and hematuria, making choices A and B incorrect. Urinary tract infection is also unlikely to cause the specific findings seen in this case, ruling out choice D. Therefore, choice C is the most appropriate based on the urinalysis results and clinical presentation.

Question 9 of 9

Which of the following laboratory values would be found in a patient with syndrome of inappropriate secretion of antidiuretic hormone?

Correct Answer: C

Rationale: The correct answer is C, Serum sodium 115 mEq/L. In syndrome of inappropriate secretion of antidiuretic hormone (SIADH), there is excess release of ADH leading to water retention and dilutional hyponatremia. Low serum sodium levels (hyponatremia) are characteristic of SIADH due to water retention without proportional sodium retention. Choices A and B are not indicative of SIADH. Choice D, high serum sodium, is more likely in conditions causing dehydration or excessive sodium intake.

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