A 65-year-old woman with a history of COPD was discovered un…

A 65-year-old woman with a history of COPD was discovered unconscious at home 4 hours ago. She is now intubated and is receiving mechanical ventilation.  A flow-directed pulmonary artery catheter has been inserted. Relevant data below.  Pulse    136/min Blood pressure    76/60 mmHg Pulmonary artery pressure    17/6 mmHg Pulmonary capillary wedge pressure    4 mmHg Cardiac output   3.8 L/min Systemic vascular resistance    1354 dynes/sec/cm-5 Central venous pressure    1 mmHg The most likely cause of this patient’s hypotension is

A patient with advanced chronic obstructive pulmonary diseas…

A patient with advanced chronic obstructive pulmonary disease is admitted to the ICU.  The patient is placed on 24% air entrainment mask and has a pulmonary artery catheter inserted.   PVR  720 dynes PaO2  57 torr The physician orders an increase to 28% oxygen via air-entrainment mask, after the increase in O2, PVR 400 dynes PaO2 72 torr What would you recommend?