The most common type of airway obstruction is:

Your patient has relatively normal lungs and is receiving mechanical ventilation following sur-gery. You observe double triggering. What is the most likely cause?

a. The termination criteria is set too low. b. The flow rate is too slow. c. Auto-PEEP. d. The inspiratory time is too short.

For optimal electrode contact, the dead skin of the ____ and any oil, hair, or other debris must be removed.

A. epidermis B. dermis C. diadermis D. subdermis