Mechanical Ventilation Variables Flashcards
Equation of Motion
What Control Varible Is it if the pressure waveform does NOT change when pt resistance and compliance changes
Pressure Controller
What is the control variable when
The pressure and volume waveform changes with compliance and resistance
Time Controller
What is the control variable when
The pressure and waveform changes with compliance and resistance and the volume waveform does not
And the volume measure and is used for control of the volume waveform
Volume Controller
What is the control variable when
The pressure and waveform changes with compliance and resistance and the volume waveform does not
And the volume not measure or used for control of the volume waveform
Flow
Trigger Varible
What tell the ventilator to begin a breath?
Can be patient or time
Limiting Variables
What cannot be exceeded during a breath?
Can be pressure, volume, or flow
Cycle Variables
What stops inspiration and begins exhalation
Can be pressure, volume, flow, or time
Baseline Variables
Where the breath ends up
Will almost always be PEEP
Mechanical Breaths
Will be seen in CMV
Mandatory
Assisted
Spontaneous Breaths
Will be seen in CSV
Supported
Unsupported
IMV Breaths
IMV Modes blend CMV and CSV breaths
Both CMV and CSV together
All CMV (until more patient breathing occurring)
All CSV (until not enough breathing occurring)
