Ventilators

Front 1

volume cycle

Back 1

vent delivers gas until a pre-set volume has been given

Front 2

pressure cycle

Back 2

vent delivers gas until a pre-set pressure has been met. when the vent cycles off, exhalation begins

Front 3

time cycle

Back 3

not commonly used; set time for inspiration, once met, exhalation begins

Front 4

mode setting: cmv

Back 4

rarely used
rr and vt are pre-set and a standard breath is given according to the settings.
pt can't move air on own AT ALL

Front 5

assist control

Back 5

rr and vt set
vent will give breath according to settings, but pt can also trigger vent when they take a breath; this breath will be the same volume as the pre-set vt

Front 6

SIMV

Back 6

rr and vt have been set, but pt can take breath whose rate and vt have been determined by the pt NOT the vent

Front 7

pressure control

Back 7

set inspiratory pressure and rr; vt is determined by the compliance of the pt's lungs
pt can trigger breaths on top of those set on the machine
breath is fast at first and then slows down (this is more physiological and leads to better o2 distribution)

Front 8

pc-simv

Back 8

programmed breaths are pressure controlled,
if pt wants to breathe on own, the pt will breathe at own rate and own vt

Front 9

pressure support

Back 9

set rr
pressure limited breath is given every time pt breathes
helps reduce work of breathing