A nurse is caring for a client who has acute kidney injury (AKI). Which of the following arterial blood gas values would the nurse expect this client to have?
pH 7.49, HCO3 24, PaCO2 30
pH 7.26, HCO3 24, PaCO2 46
pH 7.26, HCO3 14, PaCO2 30
pH 7.49, HCO3 30, PaCO2 40
The Correct Answer is C
Choice A Reason: This choice is incorrect because it indicates respiratory alkalosis, not AKI. Respiratory alkalosis is a condition in which the lungs eliminate too much carbon dioxide (CO2) from the blood, resulting in a low level of CO2 (PaCO2) and a high level of pH. A normal PaCO2 range is 35 to 45 mm Hg, and a normal pH range is 7.35 to 7.45, so a value of 30 mm Hg and 7.49 indicate respiratory alkalosis.
Choice B Reason: This choice is incorrect because it indicates respiratory acidosis, not AKI. Respiratory acidosis is a condition in which the lungs cannot eliminate enough CO2 from the blood, resulting in a high level of CO2 (PaCO2) and a low level of pH. A value of 46 mm Hg and 7.26 indicate respiratory acidosis.
Choice C Reason: This choice is correct because it indicates metabolic acidosis, which is a common complication of AKI. Metabolic acidosis is a condition in which the body produces too much acid or loses too much base, resulting in a low level of bicarbonate (HCO3) and a low level of pH. A normal HCO3 range is 22 to 26 mEq/L, so a value of 14 mEq/L indicates metabolic acidosis. The low PaCO2 value (30 mm Hg) is due to the respiratory compensation mechanism that tries to restore the acid-base balance by increasing the ventilation and eliminating more CO2.
Choice D Reason: This choice is incorrect because it indicates metabolic alkalosis, not AKI. Metabolic alkalosis is a condition in which the body loses too much acid or gains too much base, resulting in a high level of bicarbonate (HCO3) and a high level of pH. A value of 30 mEq/L and 7.49 indicate metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","E"]
Explanation
Choice A Reason: This choice is incorrect because headache is not a common manifestation of ARF. Headache may be caused by various factors such as dehydration, stress, sinusitis, or migraine, but it does not indicate ARF.
Choice B Reason: This choice is correct because severe dyspnea is a common manifestation of ARF. Dyspnea is a difficulty or discomfort in breathing that affects the oxygen delivery and carbon dioxide removal from the body. It may be caused by various factors such as lung disease, heart disease, anemia, or anxiety, but it indicates ARF when it is severe and persistent.
Choice C Reason: This choice is incorrect because nausea is not a common manifestation of ARF. Nausea is a sensation of uneasiness or discomfort in the stomach that may precede vomiting. It may be caused by various factors such as food poisoning, motion sickness, medication side effects, or pregnancy, but it does not indicate ARF.
Choice D Reason: This choice is correct because hypotension is a common manifestation of ARF. Hypotension is a condition in which the blood pressure is lower than normal (less than 90/60 mm Hg). It may be caused by various factors such as dehydration, blood loss, sepsis, or shock, but it indicates ARF when it is due to reduced cardiac output or vasodilation from hypoxia.
Choice E Reason: This choice is correct because decreased level of consciousness is a common manifestation of ARF. Decreased level of consciousness is a condition in which the person has impaired awareness or responsiveness to stimuli. It may be caused by various factors such as brain injury, stroke, seizure, or drug overdose, but it indicates ARF when it is due to increased carbon dioxide levels (hypercapnia) or decreased oxygen levels (hypoxemia) in the brain.
Correct Answer is C
Explanation
Choice A Reason: This is incorrect because hypertension is a condition of high blood pressure. A client who has hypovolemic shock is more likely to have hypotension, which is a condition of low blood pressure, due to fluid loss and reduced cardiac output.
Choice B Reason: This is incorrect because bradypnea is a condition of slow breathing. A client who has hypovolemic shock is more likely to have tachypnea, which is a condition of fast breathing, due to hypoxia and increased respiratory demand.
Choice C Reason: This is correct because oliguria is a condition of low urine output. A client who has hypovolemic shock may have oliguria due to decreased renal perfusion and activation of the renin-angiotensin-aldosterone system, which causes sodium and water retention.
Choice D reason: This is incorrect because flushing of the skin is a condition of redness and warmth of the skin. A client who has hypovolemic shock may have pallor and coolness of the skin due to vasoconstriction and reduced blood flow.
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