Evidence map›Paper›PMID 40810833›Full record

Observational studyClinical and experimental nephrology2025

Acid-base and electrolyte disorders in patients with hyperglycaemia: a monocentric, observational study.

Christoph Schwarz, Fabian Ruttinger, Georg-Christian Funk, Gregor Lindner, Roland Edlinger, Martin Auinger, Thomas Stulnig

Abstract readObservational Study
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In one paragraph

Observational study in Clinical and experimental nephrology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Christoph Schwarz *Department of Internal Medicine 1, Cardiology, Nephrology, and Intensive Care, Pyhrn-Eisenwurzenklinikum Steyr, Steyr, Austria.
Fabian Ruttinger *Department of Medicine III and Karl Landsteiner Institute for Metabolic Diseases and Nephrology, Klinik Hietzing , Vienna, Austria. fabian.ruttinger@gesundheitsverbund.at.ORCID http://orcid.org/0009-0008-6172-5116
Georg-Christian FunkKarl Landsteiner Institut für Lungenforschung und Pneumologische Onkologie, Vienna, Austria.
Gregor LindnerDepartment of Emergency Medicine, Kepler Universitätsklinikum GmbH, Johannes-Kepler-Universität, Linz, Austria.
Roland EdlingerDepartment of Medicine III and Karl Landsteiner Institute for Metabolic Diseases and Nephrology, Klinik Hietzing , Vienna, Austria.
Martin AuingerDepartment of Medicine III and Karl Landsteiner Institute for Metabolic Diseases and Nephrology, Klinik Hietzing , Vienna, Austria.
Thomas StulnigDepartment of Medicine III and Karl Landsteiner Institute for Metabolic Diseases and Nephrology, Klinik Hietzing , Vienna, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAcute hyperglycaemia is often accompanied by acid-base and electrolyte disorders as well as changes in serum osmolality which have a significant clinical impact. This study explores the prevalence of complex acid-base disorders in patients with hyperglycaemia, focusing on the limitations of current diagnostic criteria which primarily rely on pH, serum bicarbonate and anion gap.

methodsA retrospective analysis of 1159 episodes of severe hyperglycaemia was performed. Arterial blood gas analysis, serum osmolality and electrolyte levels were measured at admission to hospital and patient's outcome was observed until day seven. Patients were evaluated for acid-base and electrolyte disorders as well as for changes in measured or calculated serum osmolality.

resultsOur findings reveal that 90.7% of patients exhibited some form of acid-base disorder, mixed acid-base disorders were the most prevalent (75%). Patients with an accompanying respiratory acidosis showed higher mortality rates (12%) than patients with respiratory alkalosis (6%, p = 0.006) or no respiratory disorder (5%, p = 0.003). An elevated serum osmolality was associated with higher mortality when using the calculated, effective osmolality (19% vs 4%, p < 0.001) as well as the measured osmolality (10% vs 4%, p = 0.001). Only 20% of our population had no electrolyte disorder. This group had a significantly lower mortality rate (2%) compared to patients with elevated or decreased sodium, potassium and phosphate levels.

conclusionPatients with severe hyperglycaemia often had complex acid-base and electrolyte disorders but current criteria for diagnosing diabetic ketoacidosis (DKA) and hyperosmolar hyperglycaemic state (HHS) ignore combined disorders of acid-base homeostasis, potentially influencing patient management and outcomes.

Indexed as

Acid-Base EquilibriumAcid-Base ImbalanceHyperglycemiaWater-Electrolyte ImbalanceAdultAgedAged, 80 and overBicarbonatesBiomarkersBlood Gas AnalysisBlood GlucoseElectrolytesFemaleHumansMaleMiddle AgedBicarbonatesBiomarkersBlood GlucoseElectrolytesAcid–base homeostasisDiabetic ketoacidosisHyperosmolar hyperglycaemic stateMortalityOsmolality

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.