Case #1 Mrs. G, a 62-year-old female, was seen in the emergency department for complaints of increasing shortness of breath. Mrs. G states that seven years ago her family physician told her she had emphysema. At home she is on oxygen via nasal cannula at 1 lpm, and a small volume nebulizer with albuterol sulfate four times a day.  Her vital signs are as follows: HR 108/minute, RR 28/minute, BP 142/80 mmHg. She is on 24% venturi mask. Mrs. G's ABG results indicate respiratory acidosis,

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Case #1
Mrs. G, a 62-year-old female, was seen in the emergency department for complaints of increasing shortness of breath. Mrs. G states that seven years ago her family physician told her she had emphysema. At home she is on oxygen via nasal cannula at 1 lpm, and a small volume nebulizer with albuterol sulfate four times a day.  Her vital signs are as follows: HR 108/minute, RR 28/minute, BP 142/80 mmHg. She is on 24% venturi mask. Mrs. G's ABG results indicate respiratory acidosis, concurrent hypoxemia, and metabolic compensation.

Part 1) Her paO2 is 100.1 mmHg.

Part 2) Her (A-a) gradient is approximately 50.1 mmHg. 

Part 3) Her dead space to tidal volume ratio (Vd/Vt) is 0.885 and

Please explain what is clinically happening to the patient.

 

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