A 56 year old gentleman with chronic obstructive pulmonary disease returns to the intensive care unit following a left pneumonectomy for a squamous cell carcinoma. There is no other past medical history.
A 45 year old previously healthy man was transferred to your ICU 5 days ago after a motor vehicle accident with chest and abdominal injuries. He has been difficult to ventilate on 100% oxygen and 10cm H2O of PEEP.
Arterial Blood Gases including metabolic acidosis with respiratory alkalosis, mixed respiratory and metabolic acidoses, mixed respiratory and metabolic alkaloses, and respiratory acidosis with metabolic alkalosis.
Chronic respiratory acidosis with metabolic compensation, severe metabolic alkalosis with respiratory compensation, salbutamol induced lactic acidosis, respiratory acidosis in a pregnant woman after a chest injury.