Base Excess

Used in assessing acid-base status

Base Excess

Used in assessing acid-base status

Base Excess

Used in assessing acid-base status

Base Excess

Used in assessing acid-base status

1.pCO₂
2.pH
Created by on 25/03/2016

By using this site you acknowledge that you have read, understand, and agree to be bound by our terms of use and privacy policy. All content and tools are for educational use only, are not meant to be a substitute for professional advice and should not be used for medical diagnosis and/or medical treatment.

About this Calculator

Base excess is defined as the amount of strong acid that must be added to each liter of fully oxygenated blood to return the pH to 7.40 at a temperature of 37°C and a pCO2 of 40 mmHg (5.3 kPa), while a base deficit (ie. a negative base excess) is defined by the amount of strong base that must be added.

The formula for base deficit is as follows:

Base excess = 0.02786 X pCO2 X 10^(pH - 6.1) + 13.77 X pH - 124.58

References

Siggaard-Andersen O.

An acid-base chart for arterial blood with normal and pathophysiological reference areas.

Scandinavian Journal of Clinical and Laboratory Investigation 1971, 27 (3): 239-45

The Base Excess calculator is created by QxMD.

1. pCO₂

mm Hg
Created by on 25/03/2016

By using this site you acknowledge that you have read, understand, and agree to be bound by our terms of use and privacy policy. All content and tools are for educational use only, are not meant to be a substitute for professional advice and should not be used for medical diagnosis and/or medical treatment.

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