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J Am Soc Nephrol. 2007 Sep;18(9):2429-31. Epub 2007 Jul 26.

Use of the DeltaAG/DeltaHCO3- ratio in the diagnosis of mixed acid-base disorders.

Author information

1
Department of Medicine, Yale University School of Medicine, New Haven, Connecticut, USA. asghar.rastegar@yale.edu

Abstract

When a strong acid is added to plasma, one expects a quantitative relationship between excess anion gap (DeltaAG) and bicarbonate deficit (DeltaHCO(3)(-)) with the DeltaAG/DeltaHCO(3)(-) ratio close to unity. If true, then this ratio could be used to diagnose mixed acid-base disorders in patients with metabolic acidosis. Although the mean ratio in selected patients is close to unity, this ratio also has a wide range, making its use in individual patients problematic. The ratio should therefore be used cautiously in making a diagnosis of mixed acid-base disorders.

PMID:
17656477
DOI:
10.1681/ASN.2006121408
[Indexed for MEDLINE]
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