OI Variant With PEEP
Compute an oxygenation index variant as mean airway pressure times the inspired oxygen percentage divided by arterial oxygen tension, without a scaling factor of 100.
Description
Compute an oxygenation index variant as mean airway pressure times the inspired oxygen percentage divided by arterial oxygen tension, without a scaling factor of 100.
OI Variant With PEEP is a focused biology tool that compute an oxygenation index variant as mean airway pressure times the inspired oxygen percentage divided by arterial oxygen tension, without a scaling factor of 100. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use OI Variant With PEEP
Use OI Variant With PEEP when you need to compute an oxygenation index variant as mean airway pressure times the inspired oxygen percentage divided by arterial oxygen tension, without a scaling factor of 100. Enter Mean airway pressure, Inspired oxygen percent, and Arterial O2 using the definitions and units below so the result can be reproduced.
- Mean airway pressure
- A finite measured or assumed value, expressed in cmH2O.
- Inspired oxygen percent
- Entered as a plain percentage number such as 40 instead of a fraction.
- Arterial O2
- A finite measured or assumed value, expressed in mmHg.
How OI Variant With PEEP calculates the result
The published tool contract uses this rule: Compute an oxygenation index variant as mean airway pressure times the inspired oxygen percentage divided by arterial oxygen tension, without a scaling factor of 100.
- Oxygenation index variant
- The calculated oxygenation index variant.
Limitations of OI Variant With PEEP
A ratio or percentage can conceal the scale of its numerator and denominator and becomes sensitive to measurement error when the denominator is small. Inspired oxygen percent must remain between 1 and 100.
Alternative or Complementary measurements
Retain the original Mean airway pressure, Inspired oxygen percent, and Arterial O2 values and their units alongside the result. Oxygenation Index OI is useful when you instead need to compute the oxygenation index as mean airway pressure x FiO2 x 100 divided by arterial oxygen tension. Vigorous Seedling Index provides another view by helping you compute the vigorous seedling index as seedling dry mass in milligrams times the germination percentage divided by one hundred.
References
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Oxygenation index — Wikipedia contributors
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