Description
Supplied phase-duration arithmetic with pause time kept separate, without selecting ventilation settings or normal ranges.
A bench or research calculation starts from supplied measurements, reference values, and unit conventions. A transformed value, timing difference, or support fraction describes that model; its clinical meaning depends on measurement validity and a separate professional assessment.
Supplied phase-duration arithmetic with pause time kept separate, without selecting ventilation settings or normal ranges.
When to use this tool
Use it for respiratory cycle inspiratory expiratory ratio when the required inputs and conventions are already available.
How to use the tool and how it works
- Enter inspirationSeconds, expirationSeconds, pauseSeconds. Use the stated units and boundary conventions.
- Run the calculation. Correct any input error before interpreting a result.
- Read cycleSeconds, ieRatio, inspiratoryFraction, breathsPerMinute. Inspect any known, defined, inclusion, or boundary flags before interpreting numeric values.
Require nonnegative inspirationSeconds and pauseSeconds and strictly positive expirationSeconds. Sum cycleSeconds, calculate ieRatio=inspirationSeconds/expirationSeconds, inspiratoryFraction relative to the whole cycle including pause, and breathsPerMinute=60/cycleSeconds.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| inspirationSeconds | Inspiration Seconds | Required. Finite number; minimum 0. |
| expirationSeconds | Expiration Seconds | Required. Finite number; strictly above 0. |
| pauseSeconds | Pause Seconds | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| cycleSeconds | Cycle Seconds | Required. Finite number. |
| ieRatio | Inspiratory duration divided by expiratory duration; pause excluded. | Required. Finite number. |
| inspiratoryFraction | Inspiratory duration divided by total cycle duration including pause. | Required. Finite number. |
| breathsPerMinute | Breaths Per Minute | Required. Finite number. |
{
"input": {
"inspirationSeconds": 1,
"expirationSeconds": 2,
"pauseSeconds": 1
},
"output": {
"cycleSeconds": 4,
"ieRatio": 0.5,
"inspiratoryFraction": 0.25,
"breathsPerMinute": 15
}
}Limitations and assumptions
- The pause affects cycle duration and rate but not the inspiratory-to-expiratory ratio. These are supplied timing terms, not breathing recommendations or a diagnostic interpretation.
- The field tables describe structural bounds; the mechanics also state cross-field requirements. Malformed input shapes, disallowed keys, and invalid domains cause input errors. Results must remain finite and within the declared output contract. A successful false flag or zero placeholder is distinct from an error.
- Numeric arithmetic uses binary floating point. Exact comparisons have no hidden tolerance or decimal rounding; negative zero is exported as zero. Decimal-text integer operations retain the exactness specifically stated above.
Alternative or Complementary methods
For respiratory cycle inspiratory expiratory ratio, check the source records and the supplied rule before comparing the result with another method. Use an appropriately validated measurement or analysis method for clinical interpretation.
References
Similar or alternative tools
- Respiratory Waveform One Cycle Normalization
Unclipped supplied-cycle phase and amplitude normalization with half-open cycle membership, without breath detection.
- Expiratory Stop Marker Precision
Propagate a supplied truncated or nearest-sample marker convention without evaluating a maneuver.