The Effect of Curative Treatment on Hyperglycemia in Patients With Cushing Syndrome

Justine Herndon1, Ravinder Jeet Kaur2, Mark Romportl1

  • 1Division of Endocrinology, Diabetes and Nutrition, Mayo Clinic, Rochester, Minnesota 55905, USA.

Insights

Curative procedures significantly improve hyperglycemia in Cushing syndrome (CS) patients. Two-thirds experienced resolution or improvement, highlighting the need for monitoring during recovery.

Area of Science:

  • Endocrinology
  • Metabolic Disorders
  • Surgical Outcomes

Background:

  • Hyperglycemia is a frequent complication of Cushing syndrome (CS).
  • Effective management of hyperglycemia in CS is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the impact of curative procedures on hyperglycemia and its treatment in patients with Cushing syndrome.
  • To identify factors associated with hyperglycemia improvement post-treatment.

Main Methods:

  • Retrospective longitudinal cohort study of adult patients with endogenous CS and hyperglycemia (2000-2019).
  • Assessed changes in glycated hemoglobin A1c (HbA1c), hyperglycemia therapy intensity, and overall improvement.
  • Analyzed outcomes based on CS subtype and hypercortisolism severity.

Main Results:

  • Following curative procedures, 21% of patients achieved hyperglycemia resolution, and 47% showed improvement.
  • HbA1c levels decreased by 0.84% (P < .001), and insulin dosage reduced by 30 units (P < .001).
  • Severe hypercortisolism and non-adrenal CS subtypes were associated with better hyperglycemia improvement.

Conclusions:

  • Curative procedures offer significant benefits for hyperglycemia in a majority of Cushing syndrome patients.
  • Close monitoring and adjustment of hyperglycemia therapy are essential during the recovery phase after CS treatment.
Abstract

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