A 57-year-old female patient with emphysema has the following ABG results:
belongs to book: ABG PRACTICE QUESTIONS|Respiratory Therapy Zone|| Chapter number:1| Question number:30
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total answers (1)
belongs to book: ABG PRACTICE QUESTIONS|Respiratory Therapy Zone|| Chapter number:1| Question number:30
total answers (1)
Medicine
First you need to interpret the ABG results. The acid-base status shows that the patient is partially compensated respiratory acidosis. The other thing that should stand out is that the PaO2 is severely low, so you know that the patient needs supplemental oxygen.
For a patient with COPD, you must be careful not to give too much oxygen in order to avoid oxygen-induced hypercapnia. Remember, it’s acceptable for COPD patients to have a PaO2 in the 55-70 torr range and an SpO2 in the 88 to 93% range.
There is no indication for a bronchodilator and a nonrebreather would provide too much oxygen for the patient. In this case, you need to be able to provide a precise low FiO2.
An air-entrainment mask can help you do just that. So with that said, we know that the correct answer has to be B.
The correct answer is: B. Air-entrainment mask at 28%
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