Surgical renal calculi (stone) removal is indicated for:
Stone too small to pass
Mild, intermittent pain for 1 day
Obstruction of urine flow
Small stone without evidence of size increase
The Correct Answer is C
A. Stones that are too small to pass typically do not require surgical removal. Smaller stones are usually managed conservatively with hydration and pain management.
B. Mild, intermittent pain for 1 day does not usually indicate the need for surgery. Conservative management is often appropriate for such cases.
C. Obstruction of urine flow is a primary indication for surgical removal of renal stones. If a stone is blocking the urinary tract, it can cause severe pain, infection, or kidney damage, making surgical intervention necessary.
D. A small stone without evidence of size increase may not require surgery unless it is causing symptoms or complications. Most small stones pass naturally over time.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Arterial blood gas (ABG) analysis is the most accurate method for distinguishing between hypoxemia (low oxygen levels in the blood) and hypercapnia (elevated carbon dioxide levels). ABG testing measures both the partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2), providing a clear distinction between the two conditions.
B. While observing for signs and symptoms is useful, it is not specific enough to distinguish between hypoxemia and hypercapnia, as both conditions may present with similar symptoms like shortness of breath or confusion.
C. Measuring oxygen saturation with a pulse oximeter can detect hypoxemia but does not provide information about carbon dioxide levels, so it cannot distinguish between hypoxemia and hypercapnia.
D. Pulmonary function testing assesses lung volumes and airflow but does not directly measure oxygen or carbon dioxide levels, making it less effective for distinguishing between hypoxemia and hypercapnia.
Correct Answer is D
Explanation
A. Oxygen does play a role in maintaining acid-base balance indirectly, as it is required for aerobic metabolism, which produces carbon dioxide that is regulated by the body to maintain acid-base balance. However, this is not its primary role.
B. Oxygen does trigger chemoreceptors, but this is more of a secondary function to regulate breathing based on oxygen and carbon dioxide levels.
C. While oxygen has many roles, its most critical function is providing the necessary support for cellular metabolism, which is vital for energy production in cells.
D. Oxygen is essential for cellular metabolism as it is required for the process of oxidative phosphorylation in mitochondria, which produces ATP, the energy currency of cells.
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