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The nurse is caring for a diabetic patient in renal failure who is in metabolic acidosis. Which laboratory findings are consistent with metabolic acidosis?

A.

pH 7.35, PaCO2 40 mm Hg, HCO3-25 mEq/L

B.

pH 7.32, PaCO2 47 mm Hg. HCO3-23 mEq/L

C.

pH 7.3, PaCO2 36 mm Hg. HCO3- 19 mEq/L

D.

pH 7.5, PaCO2 35 mm Hg, HCO3- 35 mEq/L

Answer and Explanation

The Correct Answer is C

A.    pH 7.35, PaCO2 40 mm Hg, HCO3-25 mEq/L: This is within normal ranges and does not indicate acidosis.
B.    pH 7.32, PaCO2 47 mm Hg. HCO3-23 mEq/L: This indicates respiratory acidosis, not metabolic.
C.    pH 7.3, PaCO2 36 mm Hg. HCO3- 19 mEq/L: This indicates metabolic acidosis. The pH is low (acidic), and the HCO3- (bicarbonate) is decreased. The PaCO2 is within normal limits, indicating the respiratory system is compensating for the metabolic acidosis.
D.    pH 7.5, PaCO2 35 mm Hg, HCO3- 35 mEq/L: This indicates alkalosis, not acidosis.
 


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Related Questions

Correct Answer is B

Explanation

A. A nonrebreather mask is used to deliver high-flow oxygen, not low-flow. It provides the highest concentration of oxygen compared to other types of masks, which is crucial for patients with severe hypoxemia. The high-flow oxygen helps in achieving a higher concentration of oxygen in the blood.
B. It is essential that a nonrebreather mask fits snugly over the client's face to ensure that the patient receives the maximum amount of oxygen and to prevent room air from mixing with the oxygen being delivered. A proper seal is necessary to achieve the desired level of oxygenation and to avoid oxygen leakage.
C. The reservoir bag on a nonrebreather mask should not collapse with each breath. Ideally, the bag should remain partially inflated even during inspiration. If the bag collapses completely, it indicates that the patient is not receiving enough oxygen, and the mask may not be functioning correctly.
D. A nonrebreather mask itself does not cause drying of the mucous membranes. However, high-flow oxygen can sometimes lead to dryness of the mucous membranes if not managed properly. Humidification may be required to prevent dryness, but this is not a direct effect of the mask itself.

Correct Answer is ["100"]

Explanation

To calculate the rate at which the IV pump should be set to deliver the medication, you would use the formula:

(Total Volume in mL / Time in hours) = mL/hr.

The total volume of the IV bag is 50 mL and the time frame is 0.5 hours (since 30 minutes is half an hour). So, the calculation would be 50 mL / 0.5 hours = 100 mL/hr.

Therefore, the nurse should set the IV pump to deliver 100 mL/hr to administer 500 mg of ampicillin over 30 minutes.

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