A nurse is caring for a client who has the following arterial blood gas results: HCO3 18 mEq/L, PaCO2 28 mm Hg, and pH 7.30. The nurse recognizes the client is experiencing which of the following acid-base imbalances?

Metabolic alkalosis

Respiratory alkalosis

Respiratory acidosis

Metabolic acidosis

Answer and Explanation

The Correct Answer is D

Choice A Reason:

Metabolic alkalosis is characterized by an elevated pH (greater than 7.45) and an increased bicarbonate (HCO3) level. In this case, the pH is 7.30, indicating acidosis, and the HCO3 level is 18 mEq/L, which is below the normal range (22-26 mEq/L). Therefore, metabolic alkalosis is not the correct diagnosis.

Choice B Reason:

Respiratory alkalosis is indicated by a high pH (greater than 7.45) and a low PaCO2 (less than 35 mm Hg). Although the PaCO2 is low at 28 mm Hg, the pH is 7.30, indicating acidosis rather than alkalosis. Therefore, respiratory alkalosis is not the correct diagnosis.

Choice C Reason:

Respiratory acidosis is characterized by a low pH (less than 7.35) and an elevated PaCO2 (greater than 45 mm Hg). In this case, the pH is low, indicating acidosis, but the PaCO2 is also low at 28 mm Hg, which does not fit the criteria for respiratory acidosis. Therefore, respiratory acidosis is not the correct diagnosis.

Choice D Reason:

Metabolic acidosis is indicated by a low pH (less than 7.35) and a low bicarbonate (HCO3) level (less than 22 mEq/L). In this case, the pH is 7.30, indicating acidosis, and the HCO3 level is 18 mEq/L, which is below the normal range. The low PaCO2 of 28 mm Hg suggests a compensatory respiratory response to the metabolic acidosis. Therefore, metabolic acidosis is the correct diagnosis.

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Free Nursing Study Resources

Correct Answer is ["A","D","E"]

Explanation

Choice A Reason:

Cool, clammy skin is a common symptom in patients with atrial fibrillation, especially when the heart rate is very high. This symptom occurs due to decreased cardiac output, which leads to poor perfusion of the skin. When the heart is beating too fast, it doesn’t have enough time to fill properly, resulting in less blood being pumped out to the body. This can cause the skin to feel cool and clammy as the body tries to compensate for the reduced blood flow.

Choice B Reason:

Respiratory rate of 20 is within the normal range for adults, which is typically 12-20 breaths per minute. While it is important to monitor respiratory rate in patients with atrial fibrillation, a rate of 20 does not indicate any immediate distress or abnormality. Therefore, this choice is not particularly relevant to the assessment of a patient with a heart rate of 143 beats/min due to atrial fibrillation.

Choice C Reason:

Flushing of the skin is not a typical symptom associated with atrial fibrillation. Flushing can occur due to various reasons such as fever, anxiety, or certain medications, but it is not directly linked to the high heart rate or the irregular rhythm seen in atrial fibrillation. Therefore, this choice is not applicable in this context.

Choice D Reason:

Hypotension (low blood pressure) is a significant concern in patients with atrial fibrillation, especially when the heart rate is very high. The rapid heart rate can lead to decreased cardiac output, as the heart does not have enough time to fill properly between beats. This can result in lower blood pressure, which can cause symptoms such as dizziness, fainting, and fatigue. Monitoring blood pressure is crucial in managing patients with atrial fibrillation to prevent complications.

Choice E Reason:

Chest discomfort is a common symptom in patients with atrial fibrillation, particularly when the heart rate is very high. The irregular and rapid heart rate can cause the heart to work harder, leading to increased oxygen demand and potentially reduced oxygen supply to the heart muscle. This imbalance can result in chest pain or discomfort, which is a warning sign that the heart is under stress. It is important to assess and address chest discomfort promptly to prevent further cardiac complications.

A. Aspirate the stomach contents. B. Check the residual volume. C. Remove the tube and place it in the other nostril. D. Test the stomach contents for a pH indicating acidity. E. Turn off the suction to the nasogastric tube.

Correct Answer is ["A","B","D","E"]

Explanation

Choice A Reason:

Aspirating the stomach contents is essential to ensure the nasogastric tube is correctly positioned in the stomach. This step helps verify that the tube has not migrated and is safe for medication administration. If the aspirate is not obtained, further steps should be taken to confirm the tube’s placement.

Choice B Reason:

Checking the residual volume is important to assess the stomach’s contents and ensure that the patient is tolerating the feedings or medications. High residual volumes may indicate delayed gastric emptying or other gastrointestinal issues. This information helps guide the timing and amount of medication administration.

Choice C Reason:

Removing the tube and placing it in the other nostril is not a standard practice before administering medication. This action is unnecessary and could cause discomfort or complications for the patient. The focus should be on verifying the tube’s placement and ensuring it is functioning correctly.

Choice D Reason:

Testing the stomach contents for a pH indicating acidity is a reliable method to confirm the nasogastric tube’s placement. Gastric contents typically have a pH of 1 to 5, indicating the tube is in the stomach. This step helps ensure the safe administration of medications.

Choice E Reason:

Turning off the suction to the nasogastric tube is necessary before administering medications. Suction can interfere with the absorption of the medication and may cause the medication to be removed from the stomach before it has a chance to take effect. Therefore, it is important to turn off the suction temporarily during medication administration.

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A nurse is caring for a client who has the following arterial blood gas results: HCO3 18 mEq/L, PaCO2 28 mm Hg, and pH 7.30. The nurse recognizes the client is experiencing which of the following acid-base imbalances?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is caring for a client with a heart rate of 143 beats/min with atrial fibrillation. Which assessment data will the nurse anticipate? Select all that apply:

Correct Answer is ["A","D","E"]

Explanation

The nurse is preparing to administer medication using a client’s nasogastric tube. Which actions should the nurse take before administering the medication? Select all that apply.

Correct Answer is ["A","B","D","E"]

Explanation

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