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Central nervous system (CNS) disorders or conditions may cause SIADH in 9% of cases, this includes subarachnoid hemorrhage (56% of CNS causes), pituitary surgery (35% of CNS causes), brain cancer, infections, stroke and head trauma. [2] No cause of inappropriate antidiuresis is initially found in 17–60% of cases. [2]
The cornerstone of therapy for SIADH is reduction of water intake. If hyponatremia persists, then demeclocycline (an antibiotic with the side effect of inhibiting ADH) can be used. SIADH can also be treated with specific antagonists of the ADH receptors, such as conivaptan or tolvaptan. [citation needed] Another cause is psychogenic polydipsia. [3]
The treatment of hyponatremia depends on the underlying cause. [12] How quickly treatment is required depends on a person's symptoms. [12] Fluids are typically the cornerstone of initial management. [12] In those with severe disease an increase in sodium of about 5 mmol/L over one to four hours is recommended. [12]
Although hyponatremia is a fairly common condition, many patients have only mildly decreased blood sodium. Dr. Jeff Hersh explains the cause of hyponatremia, and how it should be treated Skip to ...
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).
This syndrome does not appear to be exclusively linked to childbirth, as Sheehan's syndrome has been reported in pregnant patients that experienced massive hemorrhage from non-obstetrical causes. [9] The pituitary gland grows and has a higher metabolic demand during pregnancy because the pituitary needs to rev up the production of certain ...
V 2 R antagonists have become a mainstay of treatment for euvolemic (i.e., SIADH, postoperative hyponatremia) and hypervolemic hyponatremia (i.e., CHF and cirrhosis). [9] V 2 RAs predictably cause aquaresis leading to increased [Na +] in majority of patients with hyponatremia due to SIADH, CHF, and cirrhosis. The optimum use of VRAs has not yet ...
Its cause and management remain controversial. [3] [4] In the current literature across several fields, including neurology, neurosurgery, nephrology, and critical care medicine, there is controversy over whether CSWS is a distinct condition, or a special form of syndrome of inappropriate antidiuretic hormone secretion (SIADH).