Zusammenfassung
Aufgrund von vielfältigen altersphysiologischen und auch krankheitsbedingten Veränderungen sind geriatrische Patienten prädisponiert für Störungen des Elektrolyt- und Wasserhaushalts, insbesondere für das Auftreten einer Hyponatriämie. Bereits eine milde chronische Hyponatriämie kann zu kognitiven Einschränkungen und Gangunsicherheit führen und ist mit erhöhten Raten an Stürzen und Frakturen assoziiert. Zusätzlich legen experimentelle und epidemiologische Daten nahe, dass die Hyponatriämie die Knochenresorption begünstigen kann und daher das Risiko für Osteoporose steigert. Hypernatriämie verursacht häufig nur unspezifische Symptome, ist jedoch mit einer deutlich erhöhten Mortalität assoziiert. Hypomagnesiämie kann Sarkopenie und Osteoporose begünstigen. Da Elektrolytstörungen bei geriatrischen Patienten eine hohe Prävalenz aufweisen und zu geriatrischen Syndromen beitragen können, sollte der Ausschluss relevanter Elektrolytveränderungen bei allen geriatrischen Patienten erfolgen, insbesondere nach Umstellung der Medikation.
Abstract
Disturbances of water and electrolyte balance are commonly encountered in older patients due to a multitude of physiological changes and preexisting morbidities with hyponatremia being the most common disorder. Even mild chronic hyponatremia can lead to cognitive deficits and gait instability and is associated with an increased rate of falls and fractures. Additionally, experimental and epidemiological data suggest that hyponatremia promotes bone resorption and therefore increases the risk of osteoporosis. Furthermore, osteoporosis and sarcopenia can be stimulated by hypomagnesemia. Hypernatremia often only results in unspecific symptoms but the condition is associated with a clearly increased mortality. As electrolyte disturbances have a high prevalence in the geriatric population and can contribute to geriatric syndromes and frailty, relevant electrolyte alterations should be excluded in all geriatric patients, in particular after a change in medication schedules.
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F. Grundmann hat Reisekostenunterstützung sowie Beraterhonorar durch die Otsuka Pharma GmbH erhalten.
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Grundmann, F. Elektrolytveränderungen im Alter mit Fokus auf Hyponatriämie. Z Gerontol Geriat 49, 477–482 (2016). https://doi.org/10.1007/s00391-016-1117-y
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DOI: https://doi.org/10.1007/s00391-016-1117-y