MechVent

Question 1

Equation of motion

Answer 1

Pressure = (Flow x Resistance) + (Volume/System Compliance)

Question 2

Flow-targeted, Volume-cycled breaths

Answer 2

Volume Assist Control Ventilation

Question 3

Pressure-targeted, Time-cycled breaths

Answer 3

Pressure Assist Control Ventilation

Question 4

Triggered to deliver a positive pressure breath at a regular time interval based on a set ventilator rage. All breaths are patient triggered unless RR is below the guaranteed breaths

Answer 4

Pressure Assist Control Ventilation

Question 5

Most widely used mode of ventilation

Answer 5

Pressure Support Ventilation

Question 6

All breaths are patient triggered, once a breath is triggered, flow is delivered to meet a set inspiratory pressure. Breath cycles off once PF decreased to 10-30% of the Peak inspiratory flow

Answer 6

Pressure Support Ventilation

Question 7

Guarantees a set of minimal # of positive pressure breaths delivered as either VAVC or PAVC, but if patient’s RE exceeds the guarantee, the ventilator will allow unassisted breaths

Answer 7

SIMV

Question 8

Flow cycled PS breaths

Answer 8

SIMV+PS

Question 9

Type of PACV that uses VT as feedback control for continuously adjusting the pressure target

Answer 9

Pressure regulated volume control

Question 10

Patient triggered, pressure-targeted, flow-cycled PS where the pressure target is automatically adjusted to achieve a certain volume

Answer 10

Volume Support Ventilation

Question 11

Assist control, pressure targeted, time cycles mode of PACV which utilizes respiratory system mechanics to set the VT-frequency pattern. Clinician sets only a desired minute ventilation.

Answer 11

Adaptive Support Ventilation

Question 12

Uses transient end-respiratory occlusions to measure respiratory system elastance and resistance and estimates pressure required to inflate the respiratory system from the equation of motion

Answer 12

Proportional Assist Ventilation (PAV +)

Question 13

Delivers pressure in proportion to patient effort. Effort is quantified by EMG.

Answer 13

Neurally adjusted ventilatory assist (NAVA)

Question 14

Improves ventilation redistribution

Answer 14

Proning Position

Question 15

Also called biphasic ventilation, bilevel ventilation, bilevel positive airway ventilation. Time-cycled, pressure targeted

Answer 15

Airway Pressure Release Ventilation (APRV)

Question 16

Delivers high breathing frequency (120-900 bpm), with very small VT. Minimizes cyclical overdistention and derecruitment.

Answer 16

High Frequency Oscillatory Ventilation

Question 17

Clinician sets gain on patient generated flow and volume

Answer 17

Proportional Assist Ventilation