Base excess can be misleading in acute respiratory acidosis
2011

Base Excess and HCO3 in Critically Ill Patients

Sample size: 88 publication Evidence: moderate

Author Information

Author(s): Kocsi S, Kiss K, Szerdahelyi B, Demeter M, Molnar Z

Primary Institution: University of Szeged, Hungary

Hypothesis

The study aimed to investigate the relationship between base excess (BE) and HCO3 in critically ill patients immediately after admission to the ICU.

Conclusion

The study found that HCO3 is a more reliable parameter for analyzing acid-base balance in acute respiratory acidosis than BE.

Supporting Evidence

  • There was a strong, significant correlation between BE and HCO3 (r2 = 0.93, P < 0.001).
  • In cases of acute respiratory acidosis, BE indicated metabolic acidosis with high sensitivity.
  • HCO3 showed high specificity but low sensitivity for predicting acidosis.

Takeaway

Doctors looked at blood samples from sick patients to see how two measurements, BE and HCO3, relate to each other. They found that HCO3 is better for understanding acid problems in the body.

Methodology

Retrospective evaluation of arterial blood gas samples taken within 1 hour of ICU admission, analyzing pH, HCO3, pCO2, and BE.

Participant Demographics

Critically ill patients admitted to the ICU.

Statistical Information

P-Value

<0.001

Statistical Significance

p<0.001

Digital Object Identifier (DOI)

10.1186/cc9556

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