Of the following breath descriptions, which one is considered ...

[Sportsfan2111]

Of the following breath descriptions, which one is considered spontaneous?
 
  a. Flow triggered, pressure limited, flow cy-cled
  b. Time triggered, volume limited, volume cycled
  c. Pressure triggered, pressure limited, time cycled
  d. Patient triggered, patient cycled, baseline pressure +5 cm H2O

Question 2

Partial ventilatory support can be provided by which of the following ventilator modes?
 
  1. Pressure-controlled continuous mandatory ventilation (PC-CMV) set rate 8 breaths/min
  2. Volume-controlled intermittent mandatory ventilation (VC-IMV) set rate 4 breaths/min
  3. Pressure-controlled intermittent mandatory ventilation (PC-IMV) set rate 10 breaths/min
  4. VC-MMV set Ve8 L/min
  a. 1 and 2 only
  b. 2 and 3 only
  c. 2 and 4 only
  d. 3 and 4 only

[allisonblackmore]

Answer to Question 1

ANS: D
Flow triggered and pressure triggered mean that the patient has initiated the breath. Pressure lim-ited and volume limited mean that either one of these variables is not allowed to be exceeded during a breath. This occurs with either ventilator or assisted breaths. Patient triggered could ei-ther be pressure or flow and could be part of a spontaneous breath as long as the pressure during inspiration does not rise above the baseline setting. During spontaneous breathing the patient will control both the beginning and the ending of the breath.

Answer to Question 2

ANS: C
Continuous mandatory ventilation (CMV) is a full ventilatory support mode. Therefore, a pres-sure-controlled continuous mandatory ventilation (PC-CMV) rate of 8 breaths/min is not partial ventilatory support. A ventilator rate setting of 8 breaths/min or more is also considered full sup-port. Therefore, even though pressure-controlled intermittent mandatory ventilation (PC-IMV) could be partial ventilatory support, it is full support because of the set rate of 10 breaths/min. Volume-controlled intermittent mandatory ventilation (VC-IMV) with a set rate of 4 breaths/min is partial ventilatory support and MMV can be partial ventilatory support when the patient is par-ticipating in the work of breathing (WOB) to maintain effective alveolar ventilation.

[Sportsfan2111]

TY

[allisonblackmore]

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