The pressure-time scalar shown in the figure represents which of ...

[meagbuch]

The pressure-time scalar shown in the figure represents which of the following?
 
  a. Airway pressure release ventilation (APRV)
  b. Volume-controlled intermittent ventilation (VC-IMV) with positive end-expiratory pressure (PEEP)
  c. Pressure-controlled intermittent mandato-ry ventilation (PC-IMV) with positive end-expiratory pressure (PEEP)
  d. Bilevel positive airway pressure

Question 2

An assisted breath in the pressure controlled continuous mandatory ventilation (PC-CMV) mode can be described by which of the following?
 
  a. Time triggered, pressure limited, time cy-cled
  b. Patient triggered, pressure limited, time cycled
  c. Time triggered, pressure limited, pressure cycled
  d. Patient triggered, volume limited, volume cycled

[sarahccccc]

Answer to Question 1

ANS: C
The figure shows two levels of pressure-control ventilation. The higher level, around 22 cm H2O is the mandatory ventilator breaths. The lower level shows spontaneous breaths with a pressure support of approximately 15 cm H2O. Baseline (PEEP) is at 5 cm H2O.

Answer to Question 2

ANS: B
An assisted breath is always patient triggered. In the pressure control or targeted mode the pres-sure set is the pressure limit and the inspiratory time setting ends inspiration (cycle). Therefore, the correct answer is patient triggered, pressure limited, time cycled. The time triggered, pressure limited, and time cycled breath is a mandatory breath in the pressure-controlled continuous man-datory ventilation (PC-CMV) mode. The time triggered, pressure limited, and pressure cycled breath describes an intermittent positive pressure breathing (IPPB)-type mandatory breath. The patient triggered, volume limited, and volume cycled is a mandatory breath in the vol-ume-controlled continuous mandatory ventilation (VC-CMV) mode.