Author Question: Which of the following condition must exist to cause the interventricular septum to move to the left ... (Read 91 times)

Mollykgkg · **on:** Jul 16, 2018

Which of the following condition must exist to cause the interventricular septum to move to the left during positive pressure ventilation?

a. Volume overload
b. Cardiac tamponade
c. Mean airway pressure >15 cm H2O
d. Decreased coronary artery perfusion

Question 2

Which of the following is the most likely cause of uneven ventilation?

a. Low set tidal volumes
b. High inspiratory flow rates
c. High mean airway pressures
d. Elevated peak inspiratory pressures

Dnite · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
Dilation of the RV can force the interventricular septum to move to the left. This phenomenon usually occurs when a high pressure (>15 cm H2O) is used and the patient is volume depleted.

Answer to Question 2

ANS: B
Uneven ventilation is likely to occur with high inspiratory flow. If, for example, the right bron-chus is partially obstructed, most of the gas flow would go to the left lung because gas flow fol-lows the path of least resistance. Consequently, a larger volume enters the left lung, creating higher airway pressures in the left lung compared with the right.