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Chapter 12 Glossary
159
Term/Acronym Denition
Spontaneous (S)
Mode
Therapy mode in which all breaths are spontaneous. The
ventilator supports breathing with user-dened Pressure Support
(PS) and Rise Time values.
Spontaneous/Timed
(S/T) Mode
Therapy mode that is similar to S mode, except that it can also
deliver a mandatory breath if the patient does not spontaneously
breathe within a set time.
Tidal Volume The amount of air passing in and out of the lungs for each breath.
Timed (T) Mode Timed pressure support therapy mode. In Timed mode, all
breaths delivered are mandatory.
Volume Control
Ventilation (VCV)
Ventilation in which breaths are controlled by an operator-
dened volume, ow pattern, breath rate, and inspiratory time.
Vte Exhaled Tidal Volume
Vti Inhaled Tidal Volume