机械通气图ppt课件.ppt

Essentials of Ventilator Graphics ?2000 RespiMedu DECREASED COMPLIANCE Time (sec) Paw (cm H2O) Low Compliance PIP PPlat Normal PIP PPlat Normal PPlat (Normal Compliance) Increased PPlat (Decreased Compliance) Normal PIP Essentials of Ventilator Graphics ?2000 RespiMedu Inadequate Inspiratory Flow Adequate Flow Time (sec) Inadequate Flow Paw (cm H2O) Essentials of Ventilator Graphics ?2000 RespiMedu Pressure-Volume Flow-Volume LOOPS Essentials of Ventilator Graphics ?2000 RespiMedu Pressure-Volume Loop (Type of Breath) Controlled Assisted Spontaneous Vol (ml) Paw (cm H2O) I: Inspiration E: Expiration I E E E I I Essentials of Ventilator Graphics ?2000 RespiMedu FRC and PV Loop FRC VOLUME TLC Negative Positive 0 DISTENDING PRESSURE Normal Compliance FRC Essentials of Ventilator Graphics ?2000 RespiMedu Components of Pressure-Volume Loop Volume (mL) Inspiration Expiration PIP VT Paw (cm H2O) Essentials of Ventilator Graphics ?2000 RespiMedu PEEP and P-V Loop Volume (mL) VT PIP Paw (cm H2O) PEEP Essentials of Ventilator Graphics ?2000 RespiMedu Work of Breathing A: Resistive Work B: Elastic Work Pressure (cm H2O) Volume (ml) B A Essentials of Ventilator Graphics ?2000 RespiMedu Inflection Points Pressure (cm H2O) Volume (mL) Upper Inflection Point Lower Inflection Point Essentials of Ventilator Graphics ?2000 RespiMedu Inadequate Sensitivity Volume (mL) Paw (cm H2O) Increased WOB Essentials of Ventilator Graphics ?2000 RespiMedu Air Leak Volume (ml) Pressure (cm H2O) Air Leak Essentials of Ventilator Graphics