The nurse is providing care for a client who has syndrome of inappropriate antidiuretic hormone (SIADH) and is critically ill. Which of the following lab findings requires immediate intervention?
Serum potassium 5.0 mEq/L
Serum calcium 8.0 mg/dL
Serum sodium 125 mEq/L
Blood urea nitrogen (BUN) 24 mg/dL
The Correct Answer is C
Choice A reason:
A serum potassium level of 5.0 mEq/L is within the normal range (3.5-5.0 mEq/L). While it is on the higher end of normal, it does not require immediate intervention in the context of SIADH. Potassium levels are crucial for cardiac and muscle function, but this value does not indicate a critical imbalance.
Choice B reason:
A serum calcium level of 8.0 mg/dL is slightly below the normal range (8.5-10.2 mg/dL). Mild hypocalcemia can occur in various conditions, but it is not typically associated with SIADH and does not require immediate intervention unless symptomatic or significantly lower.
Choice C reason:
A serum sodium level of 125 mEq/L indicates hyponatremia, which is a hallmark of SIADH. Hyponatremia can lead to severe neurological symptoms, including seizures, confusion, and coma, especially if it develops rapidly. Immediate intervention is required to correct the sodium imbalance and prevent serious complications.
Choice D reason:
A blood urea nitrogen (BUN) level of 24 mg/dL is within the upper normal range (7-20 mg/dL). While slightly elevated, it is not critically high and does not require immediate intervention in the context of SIADH. BUN levels can be influenced by various factors, including hydration status and renal function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
This statement is incorrect because a hemoglobin A1C level of 9% indicates that the client’s blood sugar levels have been consistently high over the past two to three months. Hemoglobin A1C is a measure of average blood glucose levels, not low blood sugar levels. Therefore, it would be inappropriate to suggest that the client has dangerously low blood sugar levels based on this result.
Choice B Reason:
This statement is correct because a hemoglobin A1C level of 9% indicates that the client’s average blood sugar levels are high. Hemoglobin A1C reflects the average blood glucose levels over the past two to three months. A normal A1C level is below 5.7%, while an A1C level between 5.7% and 6.4% indicates prediabetes, and an A1C level of 6.5% or higher indicates diabetes. Therefore, an A1C level of 9% clearly shows that the client’s average blood sugar is high.
Choice C Reason:
This statement is partially correct but not the most appropriate. While it is true that a high hemoglobin A1C level can indicate that blood sugar levels are high after meals, it is not specific enough. Hemoglobin A1C measures the average blood glucose levels over a period of time, not just after meals. Therefore, the statement “Your average blood sugar is high” is more accurate and appropriate.
Choice D Reason:
This statement is incorrect because it is too vague and does not provide specific information about the client’s blood sugar levels. While a high hemoglobin A1C level can indicate variability in blood sugar levels, it primarily reflects the average blood glucose levels over the past two to three months. Therefore, it would be more appropriate to state that the client’s average blood sugar is high.
Correct Answer is ["A","B","D"]
Explanation
Choice A reason:
Heart murmur is a common manifestation of valvular dysfunction. It occurs when there is turbulent blood flow across a damaged or abnormal heart valve. This can be due to stenosis (narrowing of the valve) or regurgitation (leakage of the valve). The murmur’s characteristics, such as timing, location, and intensity, can help in diagnosing the specific type of valvular disease. For example, a systolic murmur might indicate aortic stenosis or mitral regurgitation, while a diastolic murmur could suggest aortic regurgitation or mitral stenosis.

Choice B reason:
Chest pain is another symptom that can be associated with valvular dysfunction. This pain can result from increased workload on the heart due to inefficient blood flow through the valves. Conditions like aortic stenosis can lead to angina (chest pain) because the heart muscle may not receive enough oxygenated blood. This symptom is particularly concerning and warrants immediate medical attention to prevent complications such as myocardial infarction.
Choice C reason:
Varicose veins are not typically associated with valvular dysfunction in the heart. They are more related to issues with the veins in the legs, where the valves that prevent backflow of blood become weakened or damaged. This condition is generally referred to as chronic venous insufficiency and is not directly linked to the heart’s valvular problems.
Choice D reason:
Palpitations, or the sensation of irregular or rapid heartbeats, are common in clients with valvular dysfunction. These can occur due to arrhythmias, which are often seen in conditions like mitral valve prolapse or aortic regurgitation. The irregular heartbeats can be a result of the heart trying to compensate for the inefficient blood flow caused by the faulty valve.
Choice E reason:
Abdominal pain is not a typical manifestation of valvular dysfunction. While severe heart conditions can sometimes lead to generalized symptoms, abdominal pain is more commonly associated with gastrointestinal issues rather than heart valve problems. Therefore, it is not a primary symptom to anticipate in clients with valvular dysfunction.
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