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The causes of SIADH are commonly grouped into categories including: central nervous system diseases that directly stimulate the hypothalamus to release ADH, various cancers that synthesize and secrete ectopic ADH, various lung diseases, numerous drugs (carbamazepine, cyclophosphamide, SSRIs) that may stimulate the release of ADH, vasopressin ...
The result is hyponatremia. Please correct the hyponatremia to hypernatremia. —Preceding unsigned comment added by Yama fakhri (talk • contribs) 21:36, 21 December 2009 (UTC) SIADH causes HYPOnatremia not HYPERnatremia, since the nephrons don't allow the loss of as much water as they should.
This means that psychogenic polydipsia may lead to test results (e.g. in a water restriction test) consistent with diabetes insipidus or SIADH, leading to misdiagnosis. [14] Dry mouth is often a side effect of medications used in the treatment of some mental disorders, rather than being caused by the underlying condition. [15]
Mineralcorticoid excess due to a disease state such as Conn's syndrome usually does not lead to hypernatremia unless free water intake is restricted. Salt poisoning is the most common cause in children. [16] [17] It has also been seen in a number of adults with mental health problems. [11] Too much salt can also occur from drinking seawater or ...
More severe hyponatremia (levels less than 120 mEq/L), particularly if it develops rapidly (defined as occurring over less than 48 hours), can cause confusion, seizures and even lead to death ...
This is what causes the hypokalemia, hypertension, and hypernatremia associated with the syndrome. Patients often present with severe hypertension and end-organ changes associated with it like left ventricular hypertrophy, retinal, renal and neurological vascular changes along with growth retardation and failure to thrive.
Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) in turn can be caused by a number of problems. Some forms of cancer can cause SIADH, particularly small cell lung carcinoma but also a number of other tumors. A variety of diseases affecting the brain or the lung (infections, bleeding) can be the driver behind SIADH.
Tolvaptan, sold under the brand name Samsca among others, is an aquaretic drug that functions as a selective, competitive vasopressin receptor 2 (V 2) antagonist used to treat hyponatremia (low blood sodium levels) associated with congestive heart failure, cirrhosis, and the syndrome of inappropriate antidiuretic hormone (SIADH).