Nokea
A client is admitted to the ER with DKA. In the acute phase, the priority nursing action is to prepare to:
- A. Administer regular insulin intravenously
- B. Administer 5% dextrose intravenously
- C. Correct the acidosis
- D. Apply an electrocardiogram monitor
Correct Answer: A
Rationale: Administering regular insulin intravenously is the priority nursing action in the acute phase of DKA. Insulin helps to lower blood glucose levels by promoting cellular uptake of glucose and inhibiting ketone production. Administering dextrose would be counterproductive as it can worsen hyperglycemia. Correcting acidosis is important but usually follows insulin administration. Applying an electrocardiogram monitor is not the priority action in the acute management of DKA.
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A client with DM is scheduled to have surgery. The nurse should plan to:
- A. Give the client a regular diet as ordered.
- B. Hold the client's insulin on the morning of surgery.
- C. Monitor the client's blood glucose level closely during the perioperative period.
- D. Have the client stop taking insulin 48 hours before surgery.
Correct Answer: C
Rationale: The correct answer is to monitor the client's blood glucose level closely during the perioperative period. This is essential to ensure that the client's blood glucose levels remain within the target range and to prevent complications such as hypo- or hyperglycemia. Choices A, B, and D are incorrect because giving a regular diet as ordered, holding insulin on the morning of surgery, or stopping insulin 48 hours before surgery can lead to uncontrolled blood glucose levels, posing risks to the client's safety during the surgical procedure.
What is the mechanism of action of corticotropin (Acthar) when prescribed as replacement therapy for a male client who has undergone surgical removal of a pituitary tumor?
- A. It decreases cyclic adenosine monophosphate (cAMP) production and affects the metabolic rate of target organs.
- B. It interacts with plasma membrane receptors to inhibit enzymatic actions.
- C. It interacts with plasma membrane receptors to produce enzymatic actions that affect protein, fat, and carbohydrate metabolism.
- D. It regulates the threshold for water reabsorption in the kidneys.
Correct Answer: C
Rationale: Corticotropin (ACTH) stimulates the adrenal cortex to secrete cortisol and other hormones, affecting protein, fat, and carbohydrate metabolism. Choice A is incorrect because corticotropin does not decrease cAMP production; instead, it stimulates enzymatic actions. Choice B is incorrect because corticotropin does not inhibit enzymatic actions but rather produces enzymatic actions. Choice D is incorrect because corticotropin's mechanism of action does not involve regulating the threshold for water reabsorption in the kidneys.
A client with syndrome of inappropriate antidiuretic hormone (SIADH) is at risk for which of the following complications?
- A. Hypernatremia
- B. Hyponatremia
- C. Hyperkalemia
- D. Hypercalcemia
Correct Answer: B
Rationale: The correct answer is B: Hyponatremia. Syndrome of inappropriate antidiuretic hormone (SIADH) is characterized by the excessive release of antidiuretic hormone (ADH), leading to water retention in the body. This causes dilutional hyponatremia, where the sodium levels in the blood become abnormally low. Option A, Hypernatremia, is incorrect because SIADH does not cause elevated sodium levels. Option C, Hyperkalemia, is incorrect as SIADH does not directly affect potassium levels. Option D, Hypercalcemia, is also incorrect as SIADH does not impact calcium levels.
A client with type 1 diabetes mellitus presents to the emergency department with symptoms of diabetic ketoacidosis (DKA). Which of the following interventions should the nurse implement first?
- A. Administer intravenous insulin
- B. Start an intravenous line and infuse normal saline
- C. Monitor serum potassium levels
- D. Obtain an arterial blood gas (ABG)
Correct Answer: B
Rationale: The correct first intervention in a client with DKA is to start an intravenous line and infuse normal saline for fluid resuscitation. This is crucial to restore intravascular volume and improve perfusion, addressing the dehydration and electrolyte imbalances commonly seen in DKA. Administering insulin without addressing the dehydration can lead to further complications. Monitoring serum potassium levels is important but is not the first priority; potassium levels can shift with fluid resuscitation. Obtaining an arterial blood gas (ABG) is helpful in assessing acid-base status but is not the initial priority compared to fluid resuscitation.
How often should rotation sites for insulin injection be separated from one another?
- A. Every third day.
- B. Every week.
- C. Every 2-3 weeks.
- D. Every 2-4 weeks.
Correct Answer: C
Rationale: Insulin injection sites should be rotated every 2-3 weeks to prevent lipodystrophy and ensure proper insulin absorption. Option A ('Every third day') is too frequent and does not allow enough time for the previous site to heal properly. Option B ('Every week') might not provide adequate time for the tissue to recover. Option D ('Every 2-4 weeks') could potentially lead to overuse of a single injection site, increasing the risk of lipodystrophy and inconsistent insulin absorption. Therefore, the recommended interval of every 2-3 weeks is optimal for insulin injection site rotation.