Ms. Clark, who is 42 year old, presented in the ER with chest pain, persistent cough and shortness of breath. Her ideal

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Ms. Clark, who is 42 year old, presented in the ER with chest
pain, persistent cough and shortness of breath. Her ideal body
weight is 110 lbs and she was initially placed on simple mask of
45% on a day where PB = 760mmHg.Her VT = 550 ml and f = 18 bpm.
Blood gas and CBC were obtained by the ER nurse and are shown
below:
pH = 7.34
PaCO2 = 55 mmHg
Pa02 = 70 mmHg
HC03 = 33 mEq/L
HCT = 36%
PVO2 = 51 mmHg
Sa02 = 92%
SVO2 = 75%
CO = 4.8 LPM
48. What is her Arterial_Venous Oxygen Content
difference?
49. What is her Oxygen Extraction Ratio?