Author Question: Essential capabilities of an adult intensive care unit (ICU) ventilator include all of the following ... (Read 26 times)

michelleunicorn · **on:** Jul 16, 2018

Essential capabilities of an adult intensive care unit (ICU) ventilator include all of the following except:

a. expiratory pause.
b. pressure control modes.
c. flow rates up to 250 L/min.
d. respiratory rates up to 60 breaths/min.

Question 2

Methods to minimize air trapping in mechanically ventilated patients include which of the fol-lowing?

a. Using a longer inspiratory time (TI)
b. Switching to pressure support ventilation (PSV)
c. Increasing inspiratory flow
d. Administering a mucolytic agent

komodo7 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
Flow rates up to 180 L/min are suggested for adult ICU ventilators. Expiratory pause is used to measure intrinsic positive end-expiratory pressure (PEEP). The pressure control modes are essen-tial for the ventilation of patients with low lung compliance. Respiratory rates of between 1 and 6 breaths/min are essential.

Answer to Question 2

ANS: C
To minimize air trapping, or intrinsic positive end-expiratory pressure (PEEPI), the following steps may be taken: switch to pressure-controlled continuous mandatory ventilation (PC-CMV) with a short inspiratory time (TI), use a lower tidal volume (VT), maintain a clear airway, administer bronchodilators for bronchospasm, and increase inspiratory flow to lengthen expiratory time (TE).