Endocrine Abstracts

Introduction: Hypoaldosteronism is characterized by the development of hyperkalemia, but can also induce hypovolemic hyponatremia. Trimethroprim can cause hypoaldosteronism through mineralocorticoid resistance. That hypoaldosteronism can induce hyponatremia in absence of Addison’s disease has been questioned. We studied the electrolyte disturbances found following initiation of trimetroprim therapy.Material and methods: Retrospective, analytical. La...

Inroduction: Polydipsia -excessive oral intake of liquids, with/without thirst- can induce euvolemic hyponatremia. Adequate inhibition of AVP secretion induced by low plasma osmolality (POsm) is reflected in a urinary osmolality (UOsm) ≤100 mOsm/kg. However, increased fluid intake can also reveal underlying non-osmotic AVP secretion, induced by pain, nausea, and/or SIADH, with UOsm >100. Iatrogenic polydipsia is characterized by increased liquid intake without thirst...

Introduction: Primary hyperaldosteronism (PH) is characterized by autonomous adrenal aldosterone (A) hypersecretion. Unilateral adrenalectomy is the treatment of choice, when adrenal vein sampling (AVS) indicates lateralization of A secretion. To assure that each adrenal vein (AV) has been correctly sampled, cortisol levels in each adrenal vein must be higher than in the inferior vena cava. The adrenal gland cortisol/vena cava cortisol ratio is referred to as the selectivity i...