A nurse is reviewing the arterial blood gas (ABG) values of a client who has chronic kidney disease. Which of the following sets of values should the nurse expect?
pH 7.25, HCO3- 19 mEq/L, PaCO2 30 mm Hg
pH 7.50, HCO3- 20 mEq/L, PaCO2 32 mm Hg
pH 7.55, HCO3- 30 mEq/L, PaCO2 31 mm Hg
pH 7.30, HCO3- 26 mEq/L, PaCO2 50 mm Hg
The Correct Answer is A
Choice A reason:
This set of values indicates metabolic acidosis, which is common in chronic kidney disease due to the accumulation of acids in the body as the kidneys fail to eliminate them effectively³.
Choice B reason:
A pH of 7.50 is considered alkalotic, and while HCO3- and PaCO2 are within normal ranges, this set of values does not typically represent chronic kidney disease.
Choice C reason:
A pH of 7.55 is also alkalotic, and an HCO3- of 30 mEq/L indicates metabolic alkalosis, which is not characteristic of chronic kidney disease.
Choice D reason:
While a pH of 7.30 is on the lower end of the normal range, an HCO3- of 26 mEq/L is within the normal range, and a PaCO2 of 50 mm Hg indicates respiratory acidosis, not typically seen in chronic kidney disease without concurrent respiratory issues.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:Placing a cool cloth on the forehead may provide comfort but does not address intracranial pressure, which could be causing the headache[^10^].
Choice B reason:Elevating the head of the bed 30 degrees helps to decrease intracranial pressure and can alleviate headache symptoms associated with a closed head injury[^10^].
Choice C reason:Administering morphine for pain relief should be done with caution, as it can depress respiration and mask changes in the level of consciousness, which are important indicators of neurological status[^10^].
Choice D reason:A lumbar puncture is contraindicated in the presence of increased intracranial pressure due to the risk of brain herniation[^10^].
Correct Answer is D
Explanation
Choice A: Lactated Ringer’s
Lactated Ringer’s solution is an isotonic crystalloid that contains electrolytes similar to those found in blood plasma. While it is commonly used for fluid resuscitation, it does not provide a significant source of calories and therefore is not the best option to temporarily replace TPN.
Choice B: 0.9% sodium chloride
0.9% sodium chloride, also known as normal saline, is an isotonic solution that is used to expand volume and correct electrolyte imbalances. Like Lactated Ringer’s, it does not contain a significant amount of calories and is not suitable as a temporary replacement for TPN.
Choice C: 3% sodium chloride
3% sodium chloride is a hypertonic saline solution used in controlled settings to treat specific conditions such as hyponatremia. Due to its high concentration of sodium, it is not appropriate for routine fluid replacement and does not provide calories.
Choice D: Dextrose 10% in water
D10W is the preferred choice in this scenario because it provides a source of glucose, which can help maintain blood glucose levels when TPN is not available. It is important to monitor the patient’s blood glucose levels while infusing D10W to ensure they remain within a safe range. When a TPN container is delayed, Dextrose 10% in water is the most appropriate temporary solution to infuse until the next container becomes available, as it provides necessary calories in the form of glucose to the patient.
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