What’s New in the Pulse Physiology Engine 4.4.0
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Burn-Moderate

Moderate Burn

Description

Acute moderate burn across the entire body.

Burn Distribution


Figure 1. Lund-Browder chart showing burn distribution and severity.


Segment Validation

Segment 1

Initiate a moderate burn with 15% TBSA. Run for 1 hr.

Table 1. Data request validation results for Segment 1.
Property Name Validation Engine Value Percent Error Percent Change Notes
ThermalBurn-TotalBodySurfaceArea EqualTo 0.15 [187] 0.150 0.00%   Directly set.
HeartRate(1/min) GreaterThan Mild Segment1 (72.4) [187] 75.3   4.01% Greater tachycardia than mild.
MeanArterialPressure(mmHg) LessThan Mild Segment1 (96.1) [332] 95.5   -0.65% Greater decrease than mild due to burn shock/hypovolemia.
SystolicArterialPressure(mmHg) LessThan Mild Segment1 (115) [332] 114   -0.76% Greater decrease than mild.
DiastolicArterialPressure(mmHg) LessThan Mild Segment1 (74.5) [332] 74.4   -0.12% Greater decrease than mild.
CardiacOutput(L/min) LessThan Mild Segment1 (5.75) [332] 5.92 2.88%   Greater reduction than mild in early burn shock.
SystemicVascularResistance(mmHg_s/mL) GreaterThan Mild Segment1 (0.954) [332] 0.920 -3.52%   Greater compensatory vasoconstriction than mild.
BloodVolume(L) LessThan Mild Segment1 (5.49) [332] 5.48   -0.12% Greater intravascular loss than mild due to capillary leak/third spacing.
CentralVenousPressure(mmHg) LessThan Mild Segment1 (4.69) [332] 4.71 0.37%   Lower preload than mild.
Aorta-Oxygen-PartialPressure(mmHg) EqualTo Mild Segment1 (91.5) [187] 89.2 -2.51%   Oxygenation typically near baseline without inhalation injury.
Aorta-CarbonDioxide-PartialPressure(mmHg) LessThanEqualTo Mild Segment1 (38.0) [187] 38.0 0.12%   Mild hypocapnia may persist with increased ventilatory drive.
OxygenSaturation EqualTo Mild Segment1 (0.975) [187] 0.973 -0.25%   SaO2 should remain near baseline for uncomplicated burn.
RespirationRate(1/min) GreaterThan Mild Segment1 (12.1) [187] 12.4   2.90% Greater respiratory drive than mild.
TotalAlveolarVentilation(L/min) GreaterThan Mild Segment1 (4.43) [187] 4.73   6.80% Higher ventilation than mild.
EndTidalCarbonDioxidePressure(mmHg) LessThan Mild Segment1 (36.5) [187] 36.5 0.01%   Lower ETCO2 than mild with relative hyperventilation.
CoreTemperature(degC) GreaterThan Mild Segment1 (37.1) [186] 37.3   0.48% More pronounced hypermetabolic/stress response than mild.
SkinTemperature(degC) LessThan Mild Segment1 (29.3) [186] 28.2   -3.53% Greater heat loss impact than mild.
TotalMetabolicRate(W) GreaterThan Mild Segment1 (85.4) [186] 91.7   7.39% Greater hypermetabolic response than mild.
UrineProductionRate(mL/min) LessThan Mild Segment1 (0.934) [311] 0.840   -10.05% Lower urine output than mild due to reduced renal perfusion.
ExtracellularFluidVolume(L) GreaterThan Mild Segment1 (8.78) [332] 8.70 -0.89%   Greater third spacing/edema than mild.
ExtravascularFluidVolume(L) GreaterThan Mild Segment1 (34.1) [332] 34.0 -0.23%   Greater capillary leak-driven extravascular fluid than mild.


Figure 2. Vitals monitor for Segment 1.


Table 2. Data requests for Segment 1.
Property Name Engine Value
Patient-Weight(kg) 77.0
ECG-Lead3ElectricPotential(mV) 0.0409
HeartRate(1/min) 75.3
HeartStrokeVolume(mL) 78.5
HeartEjectionFraction 0.560
BloodVolume(L) 5.48
ExtravascularFluidVolume(L) 34.0
ArterialPressure(mmHg) 75.2
MeanArterialPressure(mmHg) 95.5
SystolicArterialPressure(mmHg) 114
DiastolicArterialPressure(mmHg) 74.4
CardiacOutput(L/min) 5.92
HemoglobinContent(g) 821
CentralVenousPressure(mmHg) 4.71
PulmonaryCapillariesWedgePressure(mmHg) 6.37
TidalVolume(mL) 531
TotalLungVolume(mL) 2.24e+03
RespirationRate(1/min) 12.4
OxygenSaturation 0.973
CarbonDioxideSaturation 0.0264
EndTidalCarbonDioxideFraction 0.0480
EndTidalCarbonDioxidePressure(mmHg) 36.5
TotalAlveolarVentilation(L/min) 4.73
TranspulmonaryPressure(cmH2O) 4.92
CoreTemperature(degC) 37.3
SkinTemperature(degC) 28.2
RespiratoryExchangeRatio 0.775
OxygenConsumptionRate(mL/min) 282
CarbonDioxideProductionRate(mL/min) 219
GlomerularFiltrationRate(mL/min) 62.7
RenalBloodFlow(L/min) 0.797
UrineProductionRate(mL/min) 0.840
LeftAfferentArterioleResistance(mmHg_min/mL) 0.0465
RightAfferentArterioleResistance(mmHg_min/mL) 0.0465
SystemicVascularResistance(mmHg_s/mL) 0.920
LeftAlveoli-Pressure(cmH2O) 1.03e+03
RightAlveoli-Pressure(cmH2O) 1.03e+03
Pericardium-Volume(mL) 15.0
Pericardium-Pressure(mmHg) 1.00
Trachea-Oxygen-PartialPressure(mmHg) 115
Trachea-CarbonDioxide-PartialPressure(mmHg) 36.5
LeftLungPulmonary-Oxygen-PartialPressure(mmHg) 115
RightLungPulmonary-Oxygen-PartialPressure(mmHg) 112
LeftLungPulmonary-CarbonDioxide-PartialPressure(mmHg) 37.1
RightLungPulmonary-CarbonDioxide-PartialPressure(mmHg) 38.0
LeftAlveoli-Oxygen-PartialPressure(mmHg) 115
LeftAlveoli-CarbonDioxide-PartialPressure(mmHg) 37.1
RightAlveoli-Oxygen-PartialPressure(mmHg) 112
RightAlveoli-CarbonDioxide-PartialPressure(mmHg) 38.0
Aorta-Oxygen-PartialPressure(mmHg) 89.2
Aorta-CarbonDioxide-PartialPressure(mmHg) 38.0
VenaCava-Oxygen-PartialPressure(mmHg) 37.9
VenaCava-CarbonDioxide-PartialPressure(mmHg) 44.6
RightTubules-Sodium-Concentration(g/L) 4.23
LeftTubules-Sodium-Concentration(g/L) 4.23
Oxygen-AlveolarTransfer(mL/min) 224
CarbonDioxide-AlveolarTransfer(mL/min) -160
Epinephrine-BloodConcentration(ug/L) 0.0354
Epinephrine-SystemicMassCleared(ug) 11.4
Norepinephrine-BloodConcentration(ug/L) 0.233
Norepinephrine-SystemicMassCleared(ug) 40.6

Scenario Output Plots


Figure 3. Select outputs from the scenario.


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