In restrictive lung disease, what is the primary change to lung mechanics?

A 60-year-old COPD patient is in the ER with a wrist fracture. On room air, his PaO2 is 40. He appears short of breath and he says it is because he has gained weight. You notice that he has 4+ pedal edema. The most likely cause of the edema is:  

Which is the most sensitive diagnostic indicator of a venous air embolus (VAE)?

What will a patient who is ventilated to a PaCO2 of 20 mmHg under anesthesia demonstrate?

Which is considered safe for the patient with cor pulmonale?

Which 2 respiratory physiologic parameters are increased in obesity? (Select the 2 correct answers)

The administration of which agent is least helpful in the management of an intraoperative bronchospasm?

COPD differs from asthma in 2 respects: (Select the 2 correct answers)  

Which is included in the pathophysiology of aspiration pneumonitis?

Which medication category is NOT considered an asthma “controller” medication that would affect the underlying causes of the disease?