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A Novel Method: Super-selective Adrenal Venous Sampling
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Adrenal axis in critical illness.

Soledad Sosa1, Karina Danilowicz1, Leonardo F L Rizzo1

  • 1División Endocrinología, Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, Argentina.

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|February 21, 2021
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Summary

Critically ill patients often experience adrenal dysfunction. This review suggests abandoning the concept of relative adrenal insufficiency and avoiding the cosyntropin stimulation test for diagnosis and treatment decisions in critical illness.

Keywords:
adrenal insufficiencycortisolcritical illnessmetabolism

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Area of Science:

  • Endocrinology
  • Critical Care Medicine
  • Pathophysiology

Background:

  • The hypothalamic-pituitary-adrenal (HPA) axis is crucial for managing stress responses, impacting metabolism, cardiovascular function, and immunity.
  • Critical illness triggers complex adaptive mechanisms involving the HPA axis.
  • Understanding HPA axis alterations is vital for managing critically ill patients.

Purpose of the Study:

  • To review pathophysiological changes of the adrenal axis during critical illness.
  • To evaluate the limitations of current methods for assessing adrenal function in critical care.
  • To define clear indications for corticosteroid replacement therapy in critically ill patients.

Main Methods:

  • Literature review focusing on HPA axis function in critical illness.
  • Analysis of diagnostic methods for adrenal insufficiency in this context.
  • Synthesis of evidence for corticosteroid replacement guidelines.

Main Results:

  • The traditional concept of 'relative adrenal insufficiency' is not supported in critical illness.
  • The cosyntropin stimulation test is unreliable for diagnosing adrenal insufficiency in critically ill patients.
  • Current evidence does not support using this test to guide corticosteroid treatment.

Conclusions:

  • The diagnosis and management of adrenal dysfunction in critical illness require a paradigm shift.
  • Abandoning the cosyntropin stimulation test and the concept of relative adrenal insufficiency is recommended.
  • Clinical judgment and specific indications should guide corticosteroid replacement in critically ill patients.