<prompt> Hypeonic dehydration would result from:G.I. fluid lossDiabetes mellitusPrimary hypoadrenocoicalismSIADH  <response>: ECF disturbance are of 2 types: Dehydration Overhydration DEHYDRATION: Isotonic dehydration Water Na lost in equal propoion no shift of H2O ko isotonicity of ECF seen in: GI fluid loss Burns Hemorrhage Hypeonic dehydration: H2O lost from ECF ECF becomes hypeonic H2O moves from ICF to ECF, and intracellular volume decreases seen in: Alcoholism Diabetes mellitus, diabetes insipidus. Hypotonic dehydration: H2O Na lost but Na loss H2O loss ECF becomes hypotonic, H2O moves to ICF compament causing secondary increase in ICF volume seen in: 1deg hypoaldosteronism 1deg hypoadrenocoicism OVERHYDRATION VOLUME EXPANSION: Isotonic overhydration: ko administration of oral IV isotonic saline Hypeonic overhydration: Administration of oral IV hypeonic saline Hypotonic overhydration: SIADH - excess ADH secreted in euvolemic states that result in hypervolemia 