Description
Signed supplied flow/pressure-gradient conductance and reciprocal resistance, without vascular diagnosis or a perfusion target.
Physiological models use measured signals, reference levels, rates, and physical balances. A content difference, normalized phase, or energy term depends on its unit system and model assumptions. Supplied coefficients and annotations define the calculation but do not establish biological plausibility or measurement accuracy.
Signed supplied flow/pressure-gradient conductance and reciprocal resistance, without vascular diagnosis or a perfusion target.
When to use this tool
Use Skin Blood Flow Conductance Pressure Term when you need this explicit signal, content, phase, flow, or physical-balance term under compatible supplied units.
How to use the tool and how it works
- Enter flow, arterialPressure, venousPressure. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read pressureGradient, conductance, resistance. Use the output convention below.
Require nonzero flow and unequal arterialPressure and venousPressure. Return pressureGradient=arterialPressure-venousPressure, conductance=flow/gradient, and resistance=gradient/flow.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| flow | Flow | Required. Finite number. |
| arterialPressure | Arterial Pressure | Required. Finite number. |
| venousPressure | Venous Pressure | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| pressureGradient | Pressure Gradient | Required. Finite number. |
| conductance | Conductance | Required. Finite number. |
| resistance | Resistance | Required. Finite number. |
{
"input": {
"flow": 10,
"arterialPressure": 100,
"venousPressure": 10
},
"output": {
"pressureGradient": 90,
"conductance": 0.1111111111111111,
"resistance": 9
}
}Limitations and assumptions
- Use matching pressure units and an explicit flow unit. Signed values are allowed and these ratios do not validate a vascular model, measurement quality, or a clinical resistance estimate.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Signed zero is exported as zero.
Alternative or Complementary methods
Choose a physiological and measurement model suited to the signal or experiment. Verify coefficients, unit conversions, baseline definitions, and sampling support before combining local terms.
References
Similar or alternative tools
- Blood Flow Shear Rate Radius Factor
Ideal fully developed laminar Newtonian circular-tube wall shear-rate approximation, preserving signed flow and coherent units.
- Oxygen Consumption Fick One Flow Term
Fick oxygen mass-balance product from independently supplied compatible flow and content observations; no clinical parameter is estimated.