Waveform PPT

Types of waveforms

Scalars: x is always time showing 3 waveforms of P-T, F-T, V-T. waveform that looks like a box + triangle)

Loops (MC): F-V, P-V

Pressure vs. time curve

Patient triggering

Plateau time (inadequate vs adequate)

Flow vs Time Curve

Flow-time curve

Expiratory flow rate, time and resistance

Pressure time and flow time curves

Patient/vent synchrony

Adequate vs inadequate flow during VC

Asynchrony

Flow change and its effect on I-time

Increased peak flow w/ decreased I-time

Detecting auto-PEEP

Typical volume curve

Leaks

Pressure volume loop: mandatory breath

Pressure volume loop: Spontaneous breath

Pressure volume loop: WoB

Pressure volume loop: assisted breath

Pressure volume loop changes

Pressure volume loop: changes in compliance

Pressure volume loop: over distention

Flow-volume loops: normal

Flow-volume loops: volume control

Flow-volume loops: ETT or circuit leaks

Flow-volume loops: obstructive pattern