MechanicalVentilator-Recruitment
MechanicalVentilatorRecruitment
Description
A standard patient is mechanically ventilated with moderate ARDS. The PEEP is increased to test the effects of improved lung recruitment. Ventilator setting and expected values were largely determined from Karbing et al [186] Table 2.
Segment Validation
Segment 1
Diagnosis: ARDS
Ventilator settings are set for TV = 6.9 mL/kg (ideal) and I:E = 0.5:
Mode | VT (mL) | PIP (cmH2O) | Flow (L/min) | I:E | TI (s) | RR (bpm) | PEEP (cmH2O) | FiO2 |
---|---|---|---|---|---|---|---|---|
PC-CMV | 520 | Adjust | NA | NA | 0.87 | 23 | 5 | 0.5 |
Property Name | Validation | Engine Value | Percent Error | Percent Change | Notes |
---|---|---|---|---|---|
MechanicalVentilator-TidalVolume(mL) | EqualTo 520 [186] | 508 | 2.40% | VT (measured) | |
HorowitzIndex(mmHg) | [72.0,188] [186] | 126 | 0.00% | PaO2/FiO2 (130 +/- 58) | |
ClinicalShuntFraction | [0.180,0.480] [186] | 0.335 | 0.00% | QS/QT (determined from blood gas values) (0.33 +/- 0.15) |
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Property Name | Engine Value |
---|---|
Patient-Height(in) | 71.0 |
Patient-IdealBodyWeight(kg) | 75.3 |
InspiratoryRespiratoryResistance(cmH2O_s/L) | 12.1 |
ExpiratoryRespiratoryResistance(cmH2O_s/L) | 12.1 |
RespiratoryCompliance(mL/cmH2O) | 34.9 |
ClinicalPhysiologicDeadSpaceTidalVolumeRatio | 0.521 |
ClinicalShuntFraction | 0.335 |
MechanicalVentilator-TidalVolume(L) | 0.508 |
BloodPH | 7.38 |
Aorta-Oxygen-PartialPressure(mmHg) | 63.1 |
Aorta-CarbonDioxide-PartialPressure(mmHg) | 43.6 |
Aorta-Bicarbonate-Molarity(mEq/L) | 26.1 |
OxygenSaturation | 0.930 |
HorowitzIndex(mmHg) | 126 |
IntrinsicPositiveEndExpiratoryPressure(cmH2O) | 0.225 |
MechanicalVentilator-RespirationRate(1/min) | 22.9 |
MechanicalVentilator-MeanAirwayPressure(cmH2O) | 10.6 |
MechanicalVentilator-PeakInspiratoryPressure(cmH2O) | 22.0 |
MechanicalVentilator-PlateauPressure(cmH2O) | 20.0 |
HeartRate(1/min) | 87.8 |
SystolicArterialPressure(mmHg) | 112 |
DiastolicArterialPressure(mmHg) | 77.7 |
MechanicalVentilator-TotalPulmonaryVentilation(L/min) | 11.6 |
MechanicalVentilator-InspiratoryResistance(cmH2O_s/L) | 12.1 |
MechanicalVentilator-ExpiratoryResistance(cmH2O_s/L) | 12.1 |
MechanicalVentilator-StaticRespiratoryCompliance(mL/cmH2O) | 34.2 |
MechanicalVentilator-DynamicRespiratoryCompliance(mL/cmH2O) | 29.9 |
MechanicalVentilator-EndTidalCarbonDioxidePressure(mmHg) | 30.9 |
MechanicalVentilator-EndTidalOxygenPressure(mmHg) | 347 |
MechanicalVentilator-ExpiratoryTidalVolume(L) | 0.508 |
MechanicalVentilator-InspiratoryExpiratoryRatio | 0.506 |
MechanicalVentilator-InspiratoryTidalVolume(L) | 0.508 |
MechanicalVentilator-PeakExpiratoryFlow(L/s) | 0.962 |
MechanicalVentilator-LeakFraction | 6.87e-14 |
MechanicalVentilator-IntrinsicPositiveEndExpiratoryPressure(cmH2O) | 0.225 |
MechanicalVentilator-ExtrinsicPositiveEndExpiratoryPressure(cmH2O) | 5.00 |
MechanicalVentilator-TotalPositiveEndExpiratoryPressure(cmH2O) | 5.22 |
PhysiologicDeadSpaceTidalVolumeRatio | 0.541 |
PhysiologicShuntFraction | 0.342 |
TotalRespiratoryModelInspiratoryResistance(cmH2O_s/L) | 12.1 |
TotalRespiratoryModelExpiratoryResistance(cmH2O_s/L) | 12.1 |
TotalRespiratoryModelCompliance(mL/cmH2O) | 40.4 |
ExtrinsicPositiveEndExpiratoryPressure(cmH2O) | 5.00 |
TotalPositiveEndExpiratoryPressure(cmH2O) | 5.23 |
EndTidalCarbonDioxidePressure(mmHg) | 33.3 |
PhysiologicDeadSpace(mL) | 285 |
AlveolarArterialGradient(mmHg) | 273 |
AlveolarDeadSpace(mL) | 134 |
AnatomicDeadSpace(mL) | 151 |
ChestWallCompliance(L/cmH2O) | 0.112 |
FractionOfInspiredOxygen | 0.500 |
LungCompliance(L/cmH2O) | 0.0525 |
VentilationPerfusionRatio | 2.00 |
HeartStrokeVolume(mL) | 67.9 |
HeartEjectionFraction | 0.520 |
BloodVolume(L) | 5.51 |
MeanArterialPressure(mmHg) | 95.6 |
PulsePressure(mmHg) | 34.5 |
CardiacOutput(L/min) | 5.96 |
CarbonDioxideSaturation | 0.0913 |
RespiratoryExchangeRatio | 0.815 |
SystemicVascularResistance(mmHg_s/mL) | 0.915 |
OxygenConsumptionRate(mL/min) | 243 |
CarbonDioxideProductionRate(mL/min) | 198 |
Patient-AlveoliSurfaceArea(m^2) | 20.5 |
Patient-ExpiratoryReserveVolume(L) | 0.849 |
Patient-FunctionalResidualCapacity(L) | 1.35 |
Patient-InspiratoryCapacity(L) | 3.03 |
Patient-InspiratoryReserveVolume(L) | 2.49 |
Patient-ResidualVolume(L) | 0.504 |
Patient-TidalVolumeBaseline(L) | 0.537 |
Patient-TotalLungCapacity(L) | 4.38 |
Patient-VitalCapacity(L) | 3.88 |
Segment 2
PEEP is increased for improved recruitment with PIP set to maintain target TV:
Mode | VT (mL) | PIP (cmH2O) | Flow (L/min) | I:E | TI (s) | RR (bpm) | PEEP (cmH2O) | FiO2 |
---|---|---|---|---|---|---|---|---|
PC-CMV | 520 | Adjust | NA | NA | 0.87 | 23 | 18 | 0.5 |
Property Name | Validation | Engine Value | Percent Error | Percent Change | Notes |
---|---|---|---|---|---|
MechanicalVentilator-TidalVolume(mL) | EqualTo 520 [186] | 518 | 0.402% | VT (measured) | |
Aorta-CarbonDioxide-PartialPressure(mmHg) | EqualTo Segment1 (43.6) [255] | 43.7 | 0.183% | PaCO2 | |
Aorta-Oxygen-PartialPressure(mmHg) | GreaterThan Segment1 (63.1) [186] | 95.5 | 51.2% | PaO2 | |
HorowitzIndex(mmHg) | [138,302] [186] | 191 | 0.00% | PaO2/FiO2 (220 +/- 82) | |
HorowitzIndex(mmHg) | GreaterThan Segment1 (126) [186] | 191 | 51.2% | PaO2/FiO2 | |
ClinicalShuntFraction | [0.0800,0.360] [186] | 0.190 | 0.00% | QS/QT (determined from blood gas values) (0.22 +/- 0.14) | |
ClinicalShuntFraction | LessThan Segment1 (0.335) [186] | 0.190 | -43.3% | QS/QT (determined from blood gas values) |
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Property Name | Engine Value |
---|---|
Patient-Height(in) | 71.0 |
Patient-IdealBodyWeight(kg) | 75.3 |
InspiratoryRespiratoryResistance(cmH2O_s/L) | 12.1 |
ExpiratoryRespiratoryResistance(cmH2O_s/L) | 12.1 |
RespiratoryCompliance(mL/cmH2O) | 41.2 |
ClinicalPhysiologicDeadSpaceTidalVolumeRatio | 0.510 |
ClinicalShuntFraction | 0.190 |
MechanicalVentilator-TidalVolume(L) | 0.518 |
BloodPH | 7.38 |
Aorta-Oxygen-PartialPressure(mmHg) | 95.5 |
Aorta-CarbonDioxide-PartialPressure(mmHg) | 43.7 |
Aorta-Bicarbonate-Molarity(mEq/L) | 26.1 |
OxygenSaturation | 0.976 |
HorowitzIndex(mmHg) | 191 |
IntrinsicPositiveEndExpiratoryPressure(cmH2O) | 0.411 |
MechanicalVentilator-RespirationRate(1/min) | 22.9 |
MechanicalVentilator-MeanAirwayPressure(cmH2O) | 23.3 |
MechanicalVentilator-PeakInspiratoryPressure(cmH2O) | 34.0 |
MechanicalVentilator-PlateauPressure(cmH2O) | 31.0 |
HeartRate(1/min) | 70.7 |
SystolicArterialPressure(mmHg) | 115 |
DiastolicArterialPressure(mmHg) | 74.5 |
MechanicalVentilator-TotalPulmonaryVentilation(L/min) | 11.9 |
MechanicalVentilator-InspiratoryResistance(cmH2O_s/L) | 12.1 |
MechanicalVentilator-ExpiratoryResistance(cmH2O_s/L) | 12.1 |
MechanicalVentilator-StaticRespiratoryCompliance(mL/cmH2O) | 40.9 |
MechanicalVentilator-DynamicRespiratoryCompliance(mL/cmH2O) | 32.4 |
MechanicalVentilator-EndTidalCarbonDioxidePressure(mmHg) | 32.4 |
MechanicalVentilator-EndTidalOxygenPressure(mmHg) | 350 |
MechanicalVentilator-ExpiratoryTidalVolume(L) | 0.518 |
MechanicalVentilator-InspiratoryExpiratoryRatio | 0.506 |
MechanicalVentilator-InspiratoryTidalVolume(L) | 0.518 |
MechanicalVentilator-PeakExpiratoryFlow(L/s) | 0.875 |
MechanicalVentilator-LeakFraction | 3.00e-14 |
MechanicalVentilator-IntrinsicPositiveEndExpiratoryPressure(cmH2O) | 0.379 |
MechanicalVentilator-ExtrinsicPositiveEndExpiratoryPressure(cmH2O) | 18.0 |
MechanicalVentilator-TotalPositiveEndExpiratoryPressure(cmH2O) | 18.4 |
PhysiologicDeadSpaceTidalVolumeRatio | 0.541 |
PhysiologicShuntFraction | 0.197 |
TotalRespiratoryModelInspiratoryResistance(cmH2O_s/L) | 12.1 |
TotalRespiratoryModelExpiratoryResistance(cmH2O_s/L) | 12.1 |
TotalRespiratoryModelCompliance(mL/cmH2O) | 43.0 |
ExtrinsicPositiveEndExpiratoryPressure(cmH2O) | 18.0 |
TotalPositiveEndExpiratoryPressure(cmH2O) | 18.4 |
EndTidalCarbonDioxidePressure(mmHg) | 34.9 |
PhysiologicDeadSpace(mL) | 285 |
AlveolarArterialGradient(mmHg) | 245 |
AlveolarDeadSpace(mL) | 134 |
AnatomicDeadSpace(mL) | 151 |
ChestWallCompliance(L/cmH2O) | 0.197 |
FractionOfInspiredOxygen | 0.500 |
LungCompliance(L/cmH2O) | 0.0525 |
VentilationPerfusionRatio | 2.13 |
HeartStrokeVolume(mL) | 81.1 |
HeartEjectionFraction | 0.566 |
BloodVolume(L) | 5.54 |
MeanArterialPressure(mmHg) | 96.3 |
PulsePressure(mmHg) | 41.0 |
CardiacOutput(L/min) | 5.73 |
CarbonDioxideSaturation | 0.0942 |
RespiratoryExchangeRatio | 0.818 |
SystemicVascularResistance(mmHg_s/mL) | 0.958 |
OxygenConsumptionRate(mL/min) | 249 |
CarbonDioxideProductionRate(mL/min) | 204 |
Patient-AlveoliSurfaceArea(m^2) | 20.5 |
Patient-ExpiratoryReserveVolume(L) | 0.849 |
Patient-FunctionalResidualCapacity(L) | 1.35 |
Patient-InspiratoryCapacity(L) | 3.03 |
Patient-InspiratoryReserveVolume(L) | 2.49 |
Patient-ResidualVolume(L) | 0.504 |
Patient-TidalVolumeBaseline(L) | 0.537 |
Patient-TotalLungCapacity(L) | 4.38 |
Patient-VitalCapacity(L) | 3.88 |
Scenario Output Plots
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