Page 342 - Clinical Application of Mechanical Ventilation
P. 342
308 Chapter 11
Patient-Ventilator Dyssynchrony Lack of Ventilator Response
Dyssynchrony during Constant Flow Circuit Leaks
Ventilation Pressure-Volume Loop (PVL) and
Dyssynchrony during Descending Flow-Volume Loop (FVL)
Ramp Flow Ventilation Pressure-Volume Loop (PVL)
Changes in Pressure Waveforms Effects of Lung-Thorax Compliance
during Respiratory Mechanics on PVL
Measurement Effects of Airflow Resistance on PVL
Dyssynchrony during Lower Inflection Point on PVL and
Pressure-Controlled Ventilation Titration of PEEP
Using Expiratory Flow and Pressure Upper Inflection Point on PVL and
Waveforms as Diagnostic Tools Adjustment of V T
Increased Airway Resistance Effects of Airway Status on Flow-
Loss of Elastic Recoil Volume Loop (FVL)
Decreased Lung-Thorax Summary
Compliance (C ) Self-Assessment Questions
LT
Gas Trapping and Uncounted Answers to Self-Assessment Questions
Breathing Efforts References
Troubleshooting Ventilator Function Additional Resources
Key Terms
airway opening pressure (P ) peak alveolar pressure (Peak P ;
ALV
AO
alveolar pressure (P ALV ) plateau pressure)
constant flow waveform (CFW) peak inspiratory pressure (PIP)
controlled mandatory ventilation plateau pressure (P PLAT ; peak
(CMV) alveolar pressure)
descending ramp flow waveform pressure-controlled ventilation (PCV)
(DRFW) pressure-volume loop (PVL)
expiratory time (T ) synchronized intermittent mandatory
E
flow-volume loop (FVL) ventilation (SIMV)
inspiratory time (T ) tidal volume (V )
T
I
inverse ratio pressure-controlled total cycle time (TCT)
ventilation (IRPCV) transairway pressure (P )
TA
lung-thorax compliance (C ) volume-controlled ventilation (VCV)
LT
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