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

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Question 1 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 2 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 3 of 9

Acute kidney injury from postrenal etiology is caused by

Correct Answer: A

Rationale: The correct answer is A because acute kidney injury from postrenal etiology is caused by obstruction of the flow of urine, leading to back pressure and damage to the kidneys. Choices B and C relate to prerenal causes, affecting renal perfusion and volume status. Choice D refers to intrinsic renal causes, directly affecting kidney tissue function, not postrenal obstruction. Therefore, A is correct due to the nature of postrenal etiology.

Question 4 of 9

The term used to describe an increase in blood urea nitrogen (BUN) and serum creatinine is

Correct Answer: B

Rationale: The correct answer is B: azotemia. Azotemia refers to elevated levels of nitrogenous waste products like BUN and creatinine in the blood. This occurs when the kidneys are not functioning properly, leading to decreased filtration and excretion of waste products. Oliguria (A) is reduced urine output, not specific to elevated BUN and creatinine levels. Acute kidney injury (C) is a broader term for sudden loss of kidney function. Prerenal disease (D) typically refers to conditions affecting blood flow to the kidneys, leading to decreased kidney function, but it does not specifically describe the increase in BUN and creatinine levels.

Question 5 of 9

A patient with a history of type 1 diabetes and an eating disorder is found unconscious. In the emergency department, the following lab values are obtained: Glucose: 648 mg/dL pH: 88 P CO : 20 mm Hg a 2 P O : 95 mm Hg a 2 HCO ¯: undetectable Anion gap: >31 Na+: 127 mEq/L K+: 5 mEq/L Creatinine: 8 mg/dL After the patient’s airway and ventilation have been established, the next priority for this patient is:

Correct Answer: A

Rationale: The correct answer is A: administration of a 1-L normal saline fluid bolus. In this scenario, the patient is likely experiencing diabetic ketoacidosis (DKA) due to the extremely high glucose levels, low bicarbonate, and anion gap metabolic acidosis. The priority is to correct the dehydration and electrolyte imbalances through fluid resuscitation with normal saline to improve perfusion and reverse the metabolic derangements. Options B, C, and D do not address the immediate need for volume resuscitation and correction of dehydration. Administering insulin or potassium without first addressing the fluid deficit could lead to further complications. Sodium bicarbonate is not recommended in DKA as it can worsen acidosis and has not been shown to improve outcomes.

Question 6 of 9

A patient presents to the emergency department with suspected thyroid storm. The nurse should be alert to which of the following cardiac rhythms while providing care to this patient?

Correct Answer: A

Rationale: The correct answer is A: Atrial fibrillation. In thyroid storm, excess thyroid hormone levels can lead to increased sympathetic activity, causing tachycardia and arrhythmias like atrial fibrillation. Atrial fibrillation is common in thyroid storm due to the hypermetabolic state and increased risk of atrial arrhythmias. Other choices are incorrect: B (Idioventricular rhythm) is not typically associated with thyroid storm, C (Junctional rhythm) is less likely since atrial arrhythmias are more common, and D (Sinus bradycardia) is unlikely due to the hypermetabolic state causing tachycardia.

Question 7 of 9

The patient is on intake and output (I&O), as well as daily weights. The nurse notes that output is considerably less than intake over the last shift, and daily weight is 1 kg more than yesterday. The nurse should

Correct Answer: C

Rationale: The correct answer is C: assess the patient's lungs. The discrepancy between intake, output, and weight gain indicates a potential fluid imbalance. By assessing the patient's lungs, the nurse can identify signs of fluid overload, such as crackles or difficulty breathing, which could explain the weight gain and imbalance. This step is crucial in determining the underlying cause and guiding further interventions. Drawing a trough level (A) or inserting an indwelling catheter (D) are not necessary at this point and may not address the immediate issue. Placing the patient on fluid restriction (B) should only be considered after a thorough assessment to determine the cause of the imbalance.

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

The patient is getting hemodialysis for the second time when he complains of a headache and nausea and, a little later, of becoming confused. The nurse realizes these are symptoms of

Correct Answer: C

Rationale: The correct answer is C: dialysis disequilibrium syndrome. This syndrome occurs when there is a rapid shift in electrolytes, especially in the brain, due to the removal of waste products during hemodialysis. The symptoms of headache, nausea, and confusion align with this syndrome as the brain struggles to adjust to the changes. Dialyzer membrane incompatibility (A) is unlikely as it typically presents with allergic reactions, not neurological symptoms. A shift in potassium levels (B) may cause symptoms like muscle weakness or irregular heartbeat, not headache and confusion. Hypothermia (D) would present with low body temperature, shivering, and confusion, but in this case, the symptoms are more indicative of dialysis disequilibrium syndrome.

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