Which of the following statements is false regarding pressure-supported ventilation? A) It is patient triggered, pressure limited, and flow cycled. B) It can reduce the work of breathing during intermittent mandatory ventilation mode. C) The usual range is 10 to 15 cm H₂O. D) It is recommended for use in most patients in the intermittent mandatory ventilation (IMV) mode.

Question

Quizplus · Accepted Answer

Pressure support ventilation assists the patient's spontaneous inspiration with a clinician-selected level of positive pressure. Pressure support is patient triggered, pressure limited, and flow cycled. Pressure support ventilation can reduce work of breathing and may improve patient-ventilator synchrony and comfort while limiting the pressure applied to the airway. Pressure support to overcome WOB_I should be considered in the care of all spontaneously breathing patients in the IMV mode. IMV, as originally developed, allowed spontaneous breathing interspersed with volume-limited, patient- or time-triggered machine breaths. The WOB_I during spontaneous breathing due to slow demand flow systems, ventilator circuitry, and the artificial airway prompted the addition of pressure support. Today it is suggested that all spontaneous breaths during IMV be supported with an appropriate level of pressure support, usually in the range of 5 to 10 cm H₂O, to overcome the WOB_I.

Which of the Following Statements Is False Regarding Pressure-Supported Ventilation