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Urine Retention Versus Post-obstructive Diuresis as a Potential Cause of Acute Hyponatremia: A Case Report.
J Community Hosp Intern Med Perspect
January 2025
Critical Care Medicine, Freeman Health System, Joplin, MO, USA.
Acute urine retention is a common urologic emergency that is frequently seen in the Emergency room (ER). Standard treatment includes placing a urinary catheter or a suprapubic catheter with outpatient urologic follow-up. Urine retention can cause complications, such as hyponatremia and post-obstructive diuresis.
View Article and Find Full Text PDFRelationship between plasma urea and copeptin in response to arginine stimulation in healthy adults, patients with vasopressin deficiency and primary polydipsia.
Pituitary
January 2025
Departments of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland.
Background: Arginine infusion stimulates copeptin secretion, a surrogate marker of arginine vasopressin (AVP), thereby serving as a diagnostic test in the differential diagnosis of suspected AVP deficiency (AVP-D). Yet, the precise mechanism underlying the stimulatory effect of arginine on the vasopressinergic system remains elusive. Arginine plays a significant role in the urea cycle and increases the production of urea.
View Article and Find Full Text PDFCentral and nephrogenic diabetes insipidus: updates on diagnosis and management.
Front Endocrinol (Lausanne)
January 2025
Department of Endocrinology, Walter Reed National Military Medical Center, Bethesda, MD, United States.
Diabetes insipidus (DI) is a rare endocrine disease involving antidiuretic hormone (ADH), encompassing both central and nephrogenic causes. Inability to respond to or produce ADH leads to inability of the kidneys to reabsorb water, resulting in hypotonic polyuria and, if lack of hydration, hypernatremia. DI cannot be cured and is an unfamiliar disease process to many clinicians.
View Article and Find Full Text PDFOrally administered prednisolone decreases plasma arginine vasopressin and serum copeptin concentrations in healthy dogs.
J Vet Intern Med
January 2025
Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Background: The pathophysiology of polyuria and polydipsia secondary to exogenous glucocorticoid excess is incompletely understood.
Objective: Investigate plasma AVP (pAVP) and serum CoP (sCoP) concentrations in healthy dogs before, during, and after abrupt discontinuation of a long-term course of orally administered prednisolone.
Animals: Eight healthy neutered young adult research Beagles.
Diagnosis of arginine vasopressin deficiency in a patient with 10 years of polyuria and polydipsia following an Epstein-Barr virus infection.
BMJ Case Rep
January 2025
Biochemistry, North West Anglia NHS Foundation Trust, Peterborough, UK.
Polyuria-polydipsia syndrome is composed of arginine vasopressin deficiency, arginine vasopressin resistance and primary polydipsia and are characterised by severe polyuria with hypotonic urine. The water deprivation test is commonly used to indirectly assess the vasopressin response to water deprivation. We report a woman in her 20s who demonstrated severe polyuria (11-12 L/day) on submitting a 24-hour urine sample for analysis.
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