Interpret the following ABG: pH 7.49, pCo2 30 mmHg, HCO3 23 Meq/L. PaO2 96 mmHg. SaO2 98%

respiratory alkalosis

metabolic alkalosis

respiratory acidosis.

metabolic acidosis

Answer and Explanation

The Correct Answer is A

Rationale:

A. pH: 7.49 is elevated (normal range: 7.35–7.45), indicating alkalosis. PaCO₂: 30 mmHg is low (normal range: 35–45 mmHg), reflecting respiratory alkalosis. HCO₃⁻: 23 mEq/L is normal (normal range: 22–26 mEq/L) → Not a metabolic cause. PaO₂: 96 mmHg and SaO₂: 98% indicates normal oxygenation. Since the pH is high (alkalotic), and the PaCO₂ is low (respiratory alkalosis cause), and HCO₃⁻ is normal, the imbalance is uncompensated respiratory alkalosis

B. Metabolic alkalosis would show high pH and high HCO₃⁻

C. Respiratory acidosis would show low pH and high PaCO₂

D. Metabolic acidosis would show low pH and low HCO₃⁻

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Correct Answer is C

Explanation

Rationale:
A. A pH of 7.35 is at the lower end of the normal range and would not typically produce symptoms like tingling or numbness.
B. A pH of 7.45 is the upper limit of normal and may not fully explain the client's symptoms.
C. A pH of 7.50 indicates alkalosis, most likely respiratory alkalosis in this case due to hyperventilation (RR of 32). The symptoms of numbness and tingling are classic signs of respiratory alkalosis, caused by decreased CO₂ levels.
D. A pH of 7.40 is normal and would not be expected to cause the symptoms described.

Correct Answer is ["20"]

Explanation

Rationale:
To calculate the volume to administer, use the formula:

(Desired dose ÷ Dose on hand) × Volume on hand = Volume to administer

(500 mg ÷ 250 mg) × 10 mL = 2 × 10 mL = 20 mL

The nurse will administer 20 mL per dose.

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Interpret the following ABG: pH 7.49, pCo2 30 mmHg, HCO3 23 Meq/L. PaO2 96 mmHg. SaO2 98%

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

The physician orders Amoxil 500mg PO BID. The Amoxil is, supplied 250mg/10mL. How many mL will the nurse administer?

Correct Answer is ["20"]

Explanation

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