Day #46 SIADH SIAHD causes euvolemic hyponatremia resulting from increased AHD release independent of serum osmolality. It is associated with CNS disease, pulmonary disease (pneumonia, sarcoid), and small cell carcinoma. Diangosis is based of a urine osmolality >50-100 with a urinary sodium > 20 (demonstrating patient is not hypovolemic). Treatment is fluid restriction and demeclocycline. 

Day #46 SIADH

SIAHD causes euvolemic hyponatremia resulting from increased AHD release independent of serum osmolality. It is associated with CNS disease, pulmonary disease (pneumonia, sarcoid), and small cell carcinoma. Diangosis is based of a urine osmolality >50-100 with a urinary sodium > 20 (demonstrating patient is not hypovolemic). Treatment is fluid restriction and demeclocycline.