Author Question: Infants can generate auto-PEEP by which of the following methods? a. Active expiration b. ... (Read 55 times)

abarnes · **on:** Jul 16, 2018

Infants can generate auto-PEEP by which of the following methods?

a. Active expiration
b. Increased diaphragmatic excursion
c. Laryngeal braking
d. Retractions

Question 2

Running vertically down each hemithorax anteriorly is an imaginary line that is used as an ana-tomical landmark. What is that line called?

a. Anterior axillary line
b. Midaxillary line
c. Midclavicular line
d. Midsternal line

Sierray · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
The infant, especially one in distress, can actively end expiration and begin the next inspiratory phase to cause gas trapping, which leads to elevated FRC and better ventilation/perfusion matching. This can be accomplished actively using their diaphragm during exhalation to slow ex-piration and to adduct (close) their vocal cords and narrow the glottis. The combination of these two maneuvers effectively regulates volume in the lung and dynamically elevates the FRC. The narrowing of the glottis or larynx during exhalation is referred to as laryngeal braking.

Answer to Question 2

ANS: C
The left and right midclavicular lines are parallel to the midsternal line. These are drawn through the midpoints of the left and right clavicles, respectively (Figure 9-13).