George Kent is a 54-year-old widower with a history of chronic obstructive pulmonary disease and was rushed to the emergency department with increasing shortness of breath, pyrexia, and a productive cough with yellow-green sputum. He has difficulty communicating because of his inability to complete a sentence. One of his sons, Jacob, says he has been unwell for three days. Upon examination, crackles and wheezes can be heard in the lower lobes; he has tachycardia and a bounding pulse. Measurement of arterial blood gas shows pH 7.3, PaCO2 68 mm Hg, HCO3 28 mmol/L and Pa02 60 mm Hg.
How would you interpret this?
Metabolic Acidosis. Partially Compensated
Respiratory Acidosis, Uncompensated
Respiratory Acidosis, Partially Compensated
Metabolic Alkalosis Uncompensated
The Correct Answer is C
A. Metabolic acidosis would involve a low pH and low bicarbonate level, which is not evident in the given arterial blood gas results.
B. The low pH (acidosis) and high PaCO2 (respiratory component) indicate respiratory acidosis. The increased HCO3 (normal range of 22-26 mEq/L), suggests a renal compensatory mechanism attempting to normalize the pH.
C. George Kent's arterial blood gas values indicate a lower pH and an elevated PaCO2, which are consistent with respiratory acidosis. The increased HCO3 ((normal range of 22-26 mEq/L), suggests a renal compensatory mechanism attempting to normalize the pH.
D. Metabolic alkalosis is not supported by the given arterial blood gas results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A urine output of 50 mL in 4 hours is inadequate and may indicate decreased renal perfusion. Magnesium sulfate can further compromise renal perfusion, so this finding warrants careful evaluation and potential adjustment of the infusion rate.
B. This indicates that the client is not experiencing respiratory depression, a potential side effect of magnesium sulfate toxicity.
C. Diminished deep tendon reflexes is an expected finding in magnesium sulfate toxicity.
D. A heart rate of 56/min is below the normal range for an adult but may be a common finding in clients receiving magnesium sulfate due to its cardiac depressant effects.
Correct Answer is A
Explanation
A. Salicylate intoxication can lead to metabolic acidosis due to the accumulation of salicylic acid, which increases metabolic rate and production of organic acids.
B. Thiazide diuretics can lead to metabolic alkalosis due to the loss of hydrogen and chloride ions.
C. Vomiting can lead to metabolic alkalosis due to the loss of gastric acid.
D. Diarrhea can lead to metabolic acidosis due to the loss of bicarbonate-rich fluids.
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