Zusammenfassung
Ernährungsempfehlungen bei Nierenerkrankungen richten sich nach dem Krankheitsstadium
(CKD-Stadien [CKD: chronische Nierenerkrankung]), den Begleiterkrankungen und den
Sekundärfolgen der Niereninsuffizienz. Diätetische Maßnahmen verfolgen primär präventive
Ziele wie die Progressionshemmung der Niereninsuffizienz, die Aufrechterhaltung eines
adäquaten Ernährungszustands und die Verhinderung von Hyperphosphatämie oder Hyperkaliämie.
Zur Progressionshemmung chronischer Nierenerkrankungen wird neben den etablierten
medikamentösen Interventionen nur noch in den CKD-Stadien 1–3 eine diätetische Eiweißrestriktion
auf 0,6–0,8 g / kg / d empfohlen. Für das Management einer Hyperphosphatämie stehen
sowohl diätetische als auch medikamentöse (Phosphatbinder) Behandlungsoptionen zur
Verfügung. Diätetische Phosphatrestriktionen dürfen den Ernährungszustand allerdings
nicht negativ beeinflussen. In den CKD-Stadien 4 und 5 besteht ein hohes Risiko für
die Entwicklung einer Mangelernährung, die durch einen gesteigerten Proteinkatabolismus
bei gleichzeitig gehemmter Proteinsynthese charakterisiert ist. Die Entwicklung einer
Malnutrition muss frühzeitig erkannt und konsequent behandelt werden. Das Ziel ernährungsmedizinischer
Maßnahmen bei Mangelernährung ist die komplette Abdeckung des individuellen Energie-
und Eiweißbedarfs, im Bedarfsfall auch durch orale oder enterale (PEG [perkutane endoskopische
Gastrostomie]) Verabreichung eiweißreicher und hochkalorischer Zusatznahrung.
Abstract
Dietary recommendations for patients with chronic renal disease need to take into
consideration the CKD stage, the variety of comorbidities, and the plethora of secondary
consequences of renal insufficiency. Primary aims of dietary interventions in kidney
disease include retardation of disease progression, maintenance of a good nutritional
state and prevention of hyperphosphatemia or hyperkalemia. In CKD stages 1–3 retardation
of disease progression can be achieved by medicinal interventions in combination with
dietary protein restriction to 0.6–0.8 g / kg / day. The management of hyperphosphatemia
includes dietary as well as medicinal (phosphate binders) measures. However, dietary
phosphate control should not compromise protein intake. There is an increased risk
for development of malnutrition in CKD stages 4 and 5, which is characterized by stimulation
of muscle proteolysis and inhibition of protein synthesis. The development of malnutrition
needs to be recognized early and addressed with scrutiny. Any dietary interventions
for the management of malnutrition aim at improving energy and protein intake, either
by dietary counselling or, if required, by prescription of oral or enteral (PEG / PEJ)
energy and protein supplements.
Schlüsselwörter
Mangelernährung - Hyperphosphatämie - arterielle Hypertonie - Hyperlipidämie
Keywords
malnutrition - hyperphosphatemia - arterial hypertension - hyperlipidemia
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Prof. Dr. med. Martin K. Kuhlmann
Innere Medizin – Nephrologie, Vivantes Klinikum im Friedrichshain
Landsberger Allee 49
10249 Berlin
eMail: Martin.kuhlmann@vivantes.de