SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state

Abstract Background Central diabetes insipidus (CDI) is a rare complication following a hyperglycemic hyperosmolar state (HHS) in patients with type 2 diabetes mellitus (T2DM). The coexistence of T2DM and CDI can lead to diagnostic challenges, particularly when the patients present with persistent h...

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Main Authors: Shu Liu, Wenqiang Chen, Yanru Zhao, Shaohui Ma, Bingyin Shi, Hui Guo
Format: Article
Language:English
Published: BMC 2025-04-01
Series:BMC Endocrine Disorders
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Online Access:https://doi.org/10.1186/s12902-025-01924-1
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author Shu Liu
Wenqiang Chen
Yanru Zhao
Shaohui Ma
Bingyin Shi
Hui Guo
author_facet Shu Liu
Wenqiang Chen
Yanru Zhao
Shaohui Ma
Bingyin Shi
Hui Guo
author_sort Shu Liu
collection DOAJ
description Abstract Background Central diabetes insipidus (CDI) is a rare complication following a hyperglycemic hyperosmolar state (HHS) in patients with type 2 diabetes mellitus (T2DM). The coexistence of T2DM and CDI can lead to diagnostic challenges, particularly when the patients present with persistent hypernatremia without a sense of thirst. Case presentation This case report describes a young woman with T2DM and HHS who developed persistent hypernatremia without thirst. The diagnosis of CDI was delayed until she exhibited polydipsia, consuming up to 10 L of water per day, following the administration of dapagliflozin for glucose control. Initially, the low specific gravity of urine was not evident during dapagliflozin treatment. However, after discontinuing dapagliflozin for 48 h, CDI was confirmed through a water deprivation test, which revealed polyuria with low urine specific gravity and osmolality. The patient was successfully treated with oral desmopressin. Conclusions This case highlights that SGLT2 inhibitors, such as dapagliflozin, may accelerate polyuria and alter urine osmolality by inhibiting glucose and sodium reabsorption in the proximal tubular. Therefore, it is crucial to discontinue SGLT2 inhibitors when CDI is suspected or diagnosed.
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spelling doaj-art-d36f9a0695a54d93ac07b8d810fd130e2025-08-20T02:19:57ZengBMCBMC Endocrine Disorders1472-68232025-04-012511710.1186/s12902-025-01924-1SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic stateShu Liu0Wenqiang Chen1Yanru Zhao2Shaohui Ma3Bingyin Shi4Hui Guo5Department of Endocrinology, the First Affiliated Hospital of Xian Jiaotong UniversityDepartment of Endocrinology, the First Affiliated Hospital of Xian Jiaotong UniversityDepartment of Endocrinology, the First Affiliated Hospital of Xian Jiaotong UniversityDepartment of Medical Imaging, the First Affiliated Hospital of Xian Jiaotong UniversityDepartment of Endocrinology, the First Affiliated Hospital of Xian Jiaotong UniversityDepartment of Endocrinology, the First Affiliated Hospital of Xian Jiaotong UniversityAbstract Background Central diabetes insipidus (CDI) is a rare complication following a hyperglycemic hyperosmolar state (HHS) in patients with type 2 diabetes mellitus (T2DM). The coexistence of T2DM and CDI can lead to diagnostic challenges, particularly when the patients present with persistent hypernatremia without a sense of thirst. Case presentation This case report describes a young woman with T2DM and HHS who developed persistent hypernatremia without thirst. The diagnosis of CDI was delayed until she exhibited polydipsia, consuming up to 10 L of water per day, following the administration of dapagliflozin for glucose control. Initially, the low specific gravity of urine was not evident during dapagliflozin treatment. However, after discontinuing dapagliflozin for 48 h, CDI was confirmed through a water deprivation test, which revealed polyuria with low urine specific gravity and osmolality. The patient was successfully treated with oral desmopressin. Conclusions This case highlights that SGLT2 inhibitors, such as dapagliflozin, may accelerate polyuria and alter urine osmolality by inhibiting glucose and sodium reabsorption in the proximal tubular. Therefore, it is crucial to discontinue SGLT2 inhibitors when CDI is suspected or diagnosed.https://doi.org/10.1186/s12902-025-01924-1T2DMHyperosmolar hyperglycemic stateCentral diabetes insipidusSGLT2 inhibitors
spellingShingle Shu Liu
Wenqiang Chen
Yanru Zhao
Shaohui Ma
Bingyin Shi
Hui Guo
SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
BMC Endocrine Disorders
T2DM
Hyperosmolar hyperglycemic state
Central diabetes insipidus
SGLT2 inhibitors
title SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
title_full SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
title_fullStr SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
title_full_unstemmed SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
title_short SGLT2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
title_sort sglt2 inhibitor in a type 2 diabetes mellitus patient coexisted with central diabetes insipidus following hyperosmolar hyperglycemic state
topic T2DM
Hyperosmolar hyperglycemic state
Central diabetes insipidus
SGLT2 inhibitors
url https://doi.org/10.1186/s12902-025-01924-1
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