Author Question: What is a problem associated with lowering the inspiratory flow when attempting to overcome ... (Read 60 times)

moongchi · **on:** Jul 16, 2018

What is a problem associated with lowering the inspiratory flow when attempting to overcome obstructive inhomogeneities in a patient's lungs during mechanical ventilation?

A. an increased tidal volume
B. a shorter expiratory time
C. an increased peak inspiratory pressure
D. a different flow-time scalar

Question 2

What is a major concern when delivering a positive-pressure breath to the lungs of a patient who has distribution inhomogeneities?

A. overdistention of healthy lung units
B. overdistention of apical alveoli
C. underaeration of basal alveoli
D. maldistribution of pulmonary perfusion

trog · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B

Answer to Question 2

ANS: A
A. Correct response: Distribution in homogeneities is a major factor in creating regional overdistention of normal alveoli during a positive-pressure breath, which can cause overinflation of these alveoli. Overinflation can cause barotraumas or volutrauma.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.