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Hyperosmotic therapy is commonly used to treat intracranial hypertension in traumatic brain injury patients. Unfortunately, hyperosmolality also affects other organs. An increase in plasma osmolality may impair kidney, cardiac, and immune function, and increase blood-brain barrier permeability. These effects are related not only to the type of hyperosmotic agents, but also to the level of hyperosmolality. The commonly recommended osmolality of 320 mOsm/kg HO seems to be the maximum level, although an increase in plasma osmolality above 310 mOsm/kg HO may already induce cardiac and immune system disorders. The present review focuses on the adverse effects of hyperosmolality on the function of various organs.
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http://dx.doi.org/10.3390/jcm10184141 | DOI Listing |
J Vet Emerg Crit Care (San Antonio)
August 2025
University of Minnesota College of Veterinary Medicine, St. Paul, Minnesota, USA.
Objective: To compare survival between cats diagnosed with a nonketotic hyperosmolar hyperglycemic state (HHS) and cats diagnosed with diabetic ketoacidosis (DKA), and to determine whether clinical parameters, clinicopathologic data, and insulin type are associated with survival. Secondary objectives were to evaluate whether these parameters were associated with survival in cats undergoing a generalized hyperglycemic diabetic crisis.
Design: Retrospective evaluation of medical records of cats diagnosed with DKA and HHS between 2000 and 2020.
Sex Transm Dis
May 2025
Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Background: Hyperosmolal lubricants may negatively affect the vaginal microenvironment, increasing the risk for bacterial vaginosis (BV). We compared the incidence of Amsel-defined BV in reproductive-age women exposed to hyperosmolal lubricant during transvaginal ultrasound to those without recent lubricant exposure.
Methods: We analyzed two observational cohorts over 10 weeks: 58 lubricant-exposed women from the Gynecology and Lubricants Effects study and 59 lubricant-unexposed women from a University of Alabama Birmingham cohort linked to the University of Maryland Human Microbiome Project.
Sci Rep
May 2025
Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Cell migration, which is often impaired under high glucose (HG) conditions, plays a crucial role in the pathogenesis of various diabetic complications. This study investigates the role of mitochondrial aldehyde dehydrogenase (ALDH2) in the HG-induced migratory inhibition. Using fibroblasts sub-cultured in HG medium as a cell model of chronic hyperglycemia, we found that prolonged exposure to HG stress inhibited cell migration via a novel mechanism independent of oxidative stress or cell death.
View Article and Find Full Text PDFFront Med (Lausanne)
April 2025
Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Objective: The regulation of osmolality levels is controlled by the endocrine system, reflecting the body's water and electrolyte balance. However, the relationship between dynamic osmolality trajectories and the prognosis of septic patients has not yet been reported. This study aims to investigate the predictive value of dynamic osmolality trajectories on mortality among patients with sepsis.
View Article and Find Full Text PDFCureus
April 2025
Department of Anesthesiology, University of Texas Medical Branch, Galveston, USA.
Arginine vasopressin (AVP) disorders (previously called diabetes insipidus) lead to excessive urination due to reduced antidiuretic hormone (ADH) secretion or kidney resistance to ADH. This results in decreased water reabsorption, causing dehydration and electrolyte imbalances. Diagnosing these disorders during general anesthesia is challenging, but close monitoring of electrolytes and urine output, especially during high-risk surgeries such as intracranial procedures, is crucial.
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