%0 Journal Article %A Ruiz-Sánchez, Jorge Gabriel %A Cuesta, Martín %A Gómez-Hoyos, Emilia %A Cárdenas-Salas, Jersy %A Rubio-Herrera, Miguel Ángel %A Martínez-González, Estefanía %A De Miguel Novoa, Paz %A Ternero-Vega, Jara Eloisa %A Calle-Pascual, Alfonso Luis %A Runkle, Isabelle %T Changes in Serum Creatinine Levels Can Help Distinguish Hypovolemic from Euvolemic Hyponatremia. %D 2022 %U http://hdl.handle.net/10668/21426 %X Background and Objectives: Differentiating between hypovolemic (HH) and euvolemic hyponatremia (EH) is crucial for correct diagnosis and therapy, but can be a challenge. We aim to ascertain whether changes in serum creatinine (SC) can be helpful in distinguishing HH from EH. Materials and Methods: Retrospective analysis of patients followed in a monographic hyponatremia outpatient clinic of a tertiary hospital during 1 January 2014−30 November 2019. SC changes during HH and EH from eunatremia were studied. The diagnostic accuracy of the SC change from eunatremia to hyponatremia (∆SC) was analyzed. Results: A total of 122 hyponatremic patients, median age 79 years (70−85), 46.7% women. In total, 70/122 patients had EH, 52/122 HH. During hyponatremia, median SC levels increased in the HH group: +0.18 mg/dL [0.09−0.39, p %K SIAD %K euvolemic hyponatremia %K hyponatremia %K hypovolemic hyponatremia %K serum creatinine %~