Wk 11 - mechanical ventilation

Question 1

Volume control ventilation

Answer 1

mandatory
control is volume
cycle is time

Question 2

pressure control ventilation

Answer 2

mandatory
control is pressure
cycle is time

Question 3

assist control ventilation

Answer 3

mix of mandatory, and assist, full support of each spontaneous breath
triggered by pressure, flow, time
control is volume
cycle is time

Question 4

synchronised intermittent mandatory ventilation +/- pressure support

Answer 4

mix of mandatory, assisted and spontaneous breaths

Question 5

Assisted spontaneous breathing or pressure support ventilation

Answer 5

no mandatory breaths
trigger : pressure or flow (pt triggered)
control: pressure
cycle: flow
for conscious patients, stepping stone to extubation

Question 6

biphasic ventilation

Answer 6

some breaths at low pressure (low peep)
some at high peep
allows spontaneous breaths, superimposes to increase pressure

Question 7

airway pressure release ventilation

Answer 7

baseline air pressure at high CPAP level
pressure released intermittently to lower CPAP level to eliminate waste
pt can breath spontaneously at either level +/- pressure support

Question 8

proportional assist ventilation

Answer 8

guarantees % of work it does

ventilator varies its output to maintain proportion of workload

Question 9

adaptive support ventilation

Answer 9

automatic adaption of settings to patients passive and active respiratory mechanics

Question 10

neurally adjusted ventilatory assist

Answer 10

pressure support provided in proportion to electrical activity of the diaphragm