A client with a bowel obstruction is experiencing intractable vomiting for the last several hours despite the administration of prescribed antiemetics. The nurse obtains the client's arterial blood gas (ABG) results which identify a pH of 7.50, a PaCO2 of 42 mm Hg, and an HCO3 of 33 me/L (33 mmol/L). The nurse should interpret these results as confirming which acid-base imbalance?
Respiratory acidosis.
Metabolic acidosis.
Metabolic alkalosis.
Respiratory alkalosis.
The Correct Answer is C
Choice A reason: Respiratory acidosis is characterized by a low pH and an elevated PaCO2 due to hypoventilation, which results in CO2 retention. The ABG results in this case show a normal PaCO2, making this option incorrect.
Choice B reason: Metabolic acidosis is characterized by a low pH and a low HCO3 due to an accumulation of acids or loss of bicarbonate. The ABG results show a high pH and a high HCO3, which are opposite to the findings of metabolic acidosis.
Choice C reason: Metabolic alkalosis is characterized by a high pH and an elevated HCO3. This condition can result from excessive loss of stomach acid due to vomiting or the use of diuretics. The ABG results show a pH of 7.50 and HCO3 of 33 me/L, both indicative of metabolic alkalosis.
Choice D reason: Respiratory alkalosis is characterized by a high pH and a low PaCO2 due to hyperventilation, which leads to CO2 loss. The ABG results show a normal PaCO2, ruling out respiratory alkalosis as the correct diagnosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Drinking several bottles of carbonated water daily is not a well-established risk factor for renal calculi. While hydration is important in preventing kidney stones, carbonation itself does not significantly increase the risk.
Choice B reason: Eating a vegetarian diet with cheese 2 to 3 times a day can increase the risk for kidney stones, especially if the cheese is high in calcium or oxalates. Dairy products, including cheese, contain calcium, and excessive consumption can contribute to the formation of calcium oxalate stones, which are the most common type of kidney stones.
Choice C reason: Experiencing additional stress since adopting a child is not directly related to the formation of kidney stones. Stress can have various health impacts, but it is not a known primary risk factor for renal calculi.
Choice D reason: Jogging more frequently than the usual daily routine is not associated with an increased risk of kidney stones. Regular physical activity is generally beneficial for overall health and does not contribute to the formation of renal calculi.
Correct Answer is B
Explanation
Choice A reason: Applying soft restraints to all extremities is not appropriate during a seizure as it can increase the risk of injury. The priority is to ensure the client's safety by preventing injury without restraining them.
Choice B reason: Removing objects that could cause injury is crucial. During a seizure, the client may move unpredictably, and any nearby objects could pose a risk of harm. Clearing the area ensures the client has a safe space to have the seizure without additional hazards.
Choice C reason: Placing pillows around the client's head can provide some protection, but it is not as immediately effective or necessary as removing potentially harmful objects from the surrounding area. Ensuring a clear and safe environment is the primary concern.
Choice D reason: Administering oxygen per nasal cannula is not the first priority during a seizure. While maintaining oxygenation is important, the immediate focus should be on ensuring the client's physical safety by removing dangerous objects. Once the seizure subsides, appropriate respiratory support can be provided if needed.
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