A patient is hypoventilating and retaining carbon dioxide. On which acid-base imbalance should the nurse focus when caring for this patient?
Metabolic acidosis
Respiratory acidosis
Metabolic alkalosis
Respiratory alkalosis
The Correct Answer is B
A. Metabolic acidosis: Metabolic acidosis is caused by an accumulation of acid or loss of bicarbonate, not by carbon dioxide retention. While hypoventilation can cause a buildup of CO2, this condition is primarily associated with respiratory acidosis.
B. Respiratory acidosis: Hypoventilation leads to the retention of carbon dioxide (CO2), which increases the concentration of carbonic acid in the blood, causing a decrease in blood pH. This results in respiratory acidosis, making it the correct acid-base imbalance to focus on.
C. Metabolic alkalosis: Metabolic alkalosis occurs when there is an excess of bicarbonate or a loss of hydrogen ions, and it is not related to the retention of CO2 from hypoventilation.
D. Respiratory alkalosis: This occurs when excessive CO2 is exhaled due to hyperventilation, not hypoventilation. Hypoventilation results in CO2 retention, which leads to acidosis, not alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Avoid hanging the IV with K and inform the registered nurse (RN) of the urine output: The low urine output suggests potential renal impairment, which could lead to potassium retention. Administering potassium could cause dangerous hyperkalemia, so it’s important to hold the IV and consult the RN for further evaluation.
B. Run the IV rapidly for 30 minutes to stimulate urine production: Rapid infusion could worsen fluid overload or cause other complications, and it will not address the renal issue causing the low urine output. Potassium should be avoided to prevent complications.
C. Call the physician who ordered the K+: While notifying the physician is important, the immediate priority is to inform the RN, as the potassium infusion should be withheld until renal function is assessed and corrected, if necessary.
D. Hang the IV as ordered and chart the output: Hanging the IV with potassium is risky in this case, as the client may not be able to eliminate potassium due to decreased renal function. Monitoring urine output is crucial before proceeding with potassium administration.
Correct Answer is D
Explanation
A. Tenderness at the IV site: Tenderness at the IV site could indicate irritation or minor inflammation, but it is not the most concerning finding in this situation. It is a common issue with IV therapy and does not indicate a life-threatening condition.
B. Urine specific gravity is 1.018: A urine specific gravity of 1.018 is within the normal range (1.005 to 1.030), indicating adequate hydration. This is not an alarming finding in the context of IV fluid infusion.
C. Capillary refill is < 3 seconds: A capillary refill time of less than 3 seconds indicates good peripheral circulation, which is a positive sign and does not raise immediate concern regarding fluid status or complications from the IV infusion.
D. Newly noted crackles in the lungs: Crackles in the lungs can indicate fluid overload, which is a serious concern in older adults, particularly when receiving IV fluids like 0.45% normal saline. This suggests that the body is struggling to manage the fluid volume, leading to pulmonary complications.
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