TY - CHAP M1 - Book, Section TI - Hyponatremia A1 - Arora, Nayan A1 - Jefferson, J. Ashley A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. PY - 2022 T2 - Current Medical Diagnosis & Treatment 2022 AB - ESSENTIALS OF DIAGNOSISMust know volume status as well as serum and urine osmolality to determine etiology.Hyponatremia usually reflects excess water retention rather than sodium deficiency. The serum sodium concentration is not a measure of total body sodium.Hyponatremia in hospitalized patients commonly is caused by administration of hypotonic fluids. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1184182464 ER -