Author Question: In which of the following types of ventilation is alveolar expansion during inspiration due to an ... (Read 53 times)

09madisonrousseau09 · **on:** Jul 16, 2018

In which of the following types of ventilation is alveolar expansion during inspiration due to an increase in alveolar pressure?

1. Negative-pressure ventilation
2. Positive-pressure ventilation
3. Spontaneous ventilation
a. 1 and 2 only
b. 2 and 3 only
c. 2 only
d. 1, 2, and 3

Question 2

Which of the following strategies are useful in the management of shunt? 1. Positive end expiratory pressure 2. Permissive hypercapnia 3. Control of membrane permeability

a. 2 and 3 only
b. 1 and 3 only
c. 1, 2, and 3
d. 1 only

lin77x · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
Gas flows into the lungs because pressure at the airway opening (Pawo) is positive and alveolar pressure (Palv) is initially zero or less positive.

Answer to Question 2

ANS: B
The use of PEEP and control of membrane permeability accompany the management of shunt.