Which of the following best describes bulk flow of gas into and out of the lungs?
A) convective ventilation
B) asymmetric velocity profiles
C) Pendelluft
D) Taylor dispersion
Question 2
Which of the following helps to avoid infection in patients who are mechanically ventilated?
A) Change ventilator circuits no more than every 48 hours or as the circuit requires.
B) Ensure oxygenation during suctioning.
C) Use a gastric tube.
D) Insert the proper size of endotracheal tube.