A client with diabetic ketoacidosis (DKA) is receiving an IV infusion of 0.9% sodium chloride and insulin.
Two hours later, the client’s serum laboratory results show a decrease in the serum blood glucose from 580 to 430 mg/dL (32.2 to 23.86 mmol/L). What additional laboratory result is most important for the nurse to monitor?
Serum sodium.
Serum potassium.
Blood urea nitrogen (BUN).
Urine ketones.
The Correct Answer is B
Choice A rationale
While monitoring serum sodium levels is important in a client with DKA, it is not the most critical. Hyperglycemia can lead to a state of effective osmotic diuresis, which can cause sodium depletion.
Choice B rationale
Serum potassium levels are crucial to monitor in a client with DKA3. Despite total body potassium depletion, serum potassium levels may be high or normal upon presentation due to acidosis and insulin deficiency. However, with insulin treatment, potassium will shift back into the cells, potentially leading to life-threatening hypokalemia.
Choice C rationale
Blood urea nitrogen (BUN) might be elevated due to dehydration, but it is not the most critical lab value to monitor in the management of DKA3.
Choice D rationale
Urine ketones are not as important to monitor as serum potassium in DKA. The presence of ketones in urine only confirms that the body is breaking down fat, not the severity of DKA3.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice D rationale
Seeking clarification of the type of advance directive the client has is the most appropriate response. A living will typically outlines a person’s wishes for end-of-life care, but it may not specifically address emergency situations like cardiac arrest.
Choice A rationale
Scheduling a client and family conference to review the plan of care may be helpful, but it is not the immediate priority. The nurse first needs to understand the client’s wishes as outlined in their advance directive.
Choice B rationale
Explaining that living wills cannot be followed by emergency personnel is not entirely accurate. While it’s true that emergency personnel initiating resuscitative measures may not have immediate access to a person’s living will, in a hospital setting, a person’s known wishes should be respected as much as possible.
Choice C rationale
Checking the client’s arm for a “Do Not Resuscitate” (DNR) bracelet is not the most appropriate response. While some people may choose to wear such a bracelet, not all do. Furthermore, a DNR order is just one type of advance directive, and it’s important to clarify what specific directives the client has in place.
Correct Answer is A
Explanation
Choice A rationale
A large, non-tender, hardened lymph node without overlying tissue inflammation could indicate malignancy. Lymph nodes may become enlarged or hard due to the presence of cancer cells.
Choice B rationale
While bacterial infections can cause lymph node enlargement, they typically also cause tenderness and overlying skin changes, such as redness or warmth.
Choice C rationale
Viral infections can cause generalized lymph node enlargement, but the nodes are usually tender and not hard.
Choice D rationale
Lymphangitis, or inflammation of the lymphatic channels, typically presents with red streaks on the skin, fever, and tenderness.
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