Page 341 - Clinical Application of Mechanical Ventilation
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Chapter 11















                      Ventilator Waveform Analysis



                      Frank Dennison


                      Outline



                                             Introduction                          Peak Flow and Tidal Volume
                                             Flow Waveforms during Positive          Relationship in Time-Limited
                                                Pressure Ventilation                 Ventilation
                                             Effects of Constant Flow during       Effects of End-Flow on
                                                Volume-Controlled Ventilation        End-Transairway Pressure
                                               Flow-Time Waveform                  Distribution of Delivered Tidal Volume
                                               Pressure-Time Waveform              CMV during Descending Ramp
                                               Controlled Mandatory Ventilation      Flow Ventilation
                                               Assist Mandatory Volume-Controlled   Waveforms Developed during
                                                 Ventilation                        Pressure-Controlled Ventilation
                                               Mathematical Analysis of Constant-    Pressure-Controlled Ventilation (PCV)
                                                 Flow Ventilation                  Assist Breaths during Pressure-
                                             Spontaneous Ventilation during          Controlled Ventilation
                                                Mechanical Ventilation             Inverse Ratio Pressure-Controlled
                                               Synchronized Intermittent             Ventilation (IRPCV)
                                                 Mandatory Ventilation            Pressure Support and Spontaneous
                                               Continuous Positive Airway Pressure    Ventilation
                                             Effects of Flow, Circuit, and Lung    Pressure Support Ventilation (PSV)
                                                Characteristics on Pressure-Time   Adjusting Rise Time during PSV
                                                Waveforms                          SIMV (CFW) and PSV
                                               Flow and Transairway Pressure       SIMV (DRFW) and PSV
                                               Compliance and Alveolar Pressure   Effects of Lung Characteristics on
                                             Effects of Descending Ramp Flow        Pressure-Controlled Ventilation
                                                Waveform during Volume-             Waveforms
                                                Controlled Ventilation            Using Waveforms for Patient-
                                               Time- and Flow-Limited Ventilation   Ventilator System Assessment



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