A nurse is reviewing the laboratory values of a client who has respiratory acidosis. Which of the following findings should the nurse expect?
Potassium 3.3 mEq/L.
HCO3- 30 mEq/L.
PacO2 50 mm Hg.
pH 7.45.
The Correct Answer is C
PacO2 50 mm Hg. Choice A rationale:
Potassium levels are not directly related to respiratory acidosis. Potassium levels may be affected in certain conditions, but they are not specific indicators of respiratory acidosis.
Choice B rationale:
HCO3- (bicarbonate) levels may be elevated in metabolic alkalosis, not respiratory acidosis. In respiratory acidosis, the primary abnormality is an increased PacO2, not HCO3-.
Choice C rationale:
The partial pressure of carbon dioxide (PacO2) is a key parameter in diagnosing respiratory acidosis. In this case, a PacO2 of 50 mm Hg suggests hypoventilation and an excess of carbon dioxide in the blood, contributing to acidosis.
Choice D rationale:
The pH level given (pH 7.45) is within the normal range, which contradicts the diagnosis of respiratory acidosis. In respiratory acidosis, the pH would be expected to be below the normal range of 7.35-7.45 due to increased carbon dioxide levels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Cerebral bleeding. Choice A rationale:
Stress fractures are not directly related to hypernatremia. Hypernatremia is an electrolyte imbalance, and its main effects are related to cellular dehydration and neurological symptoms rather than bone fractures.
Choice B rationale:
This is the correct answer because hypernatremia can lead to severe dehydration and cause neurological complications, including cerebral bleeding. The brain cells can shrink due to water loss, causing blood vessels to rupture, leading to bleeding in the brain.
Choice C rationale:
Atrial dysrhythmias are not directly associated with hypernatremia. Hypernatremia primarily affects the central nervous system and can lead to neurological symptoms rather than cardiac dysrhythmias.
Choice D rationale:
Pulmonary edema is not a likely consequence of hypernatremia. Pulmonary edema is associated with fluid volume excess, not fluid volume deficit, which is characteristic of hypernatremia.
Correct Answer is ["A","C","D"]
Explanation
The correct answer is choice A, C, and D.
Choice A rationale:
Lethargy is a common symptom of metabolic alkalosis due to the body’s attempt to compensate for the altered pH balance, leading to decreased energy levels and fatigue.
Choice B rationale:
Kussmaul’s respirations are typically associated with metabolic acidosis, not alkalosis. These deep, labored breaths are the body’s way of trying to expel excess carbon dioxide to correct acidosis.
Choice C rationale:
Circumoral paresthesia, or tingling around the mouth, is a symptom of metabolic alkalosis. This occurs due to changes in calcium ion concentration affecting nerve function.
Choice D rationale:
Bicarbonate excess is a direct cause of metabolic alkalosis. Elevated bicarbonate levels in the blood lead to an increased pH, resulting in alkalosis.
Choice E rationale:
Flushing is not a typical symptom of metabolic alkalosis. It is more commonly associated with conditions that cause vasodilation or increased blood flow to the skin.
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