You perform a four-component movement in 10 sec, and then in 20 sec. If relative time is invariant, and component 1 takes 2.5 sec for the 10-sec movement time, component 1 would require ________ sec for the 20-sec movement time.

When the patient stabilizes on mechanical ventilation with a PEEP of 12 cm H2O and the FiO2 has been reduced to 0.40, how should the PEEP level reduce?

a. In increments of 2 cm H2O every 6 hr b. In increments of 3 to 5 cm H2O every 2 hr c. In increments of 3 to 5 cm H2O every 1 hr d. In increments of 5 cm H2O every 2 hr

What is the recommended response to a drop in PaO2 when the PEEP level is reduced in a me-chanically ventilated patient?

a. Increase the FiO2. b. Return the PEEP to the previous level. c. Increase the rate of mechanical breaths. d. Do nothing.