Details

Autor(en) / Beteiligte

• El Amouri, Amina
• Delva, Kato
• Foulon, Aurélie
• Vande Moortel, Charlotte
• Van Hoeck, Koen
• Glorieux, Griet
• Van Biesen, Wim
• Vande Walle, Johan
• Raes, Ann
• Snauwaert, Evelien
• Eloot, Sunny

Titel

Potassium and fiber: a controversial couple in the nutritional management of children with chronic kidney disease

Ist Teil von

• Pediatric nephrology (Berlin, West), 2022-07, Vol.37 (7), p.1657-1665

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2022

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Background Fruit and vegetable intake is commonly discouraged in children with chronic kidney disease (CKD) to avoid hyperkalemia. However, direct evidence in support of this widespread practice is lacking. Furthermore, the resultant restricted fiber exposure may deprive CKD patients from potential health benefits associated with the latter. Therefore, we investigated associations between dietary potassium intake, fiber intake, and serum potassium levels in pediatric CKD. Methods This study is a longitudinal analysis of a 2-year, prospective, multi-institutional study, following children with CKD at 3-month intervals. At each visit, dietary potassium and fiber intake were assessed, using 24-h recalls and 3-day food records. On the same occasion, serum potassium concentrations were determined. Associations between dietary potassium intake, dietary fiber intake, and serum potassium concentrations were determined using linear mixed models. Results Fifty-two CKD patients (7 transplant recipients, none on dialysis) aged 9 [4;14] years with an estimated glomerular filtration rate (eGFR) of 49 [25;68] mL/min/1.73 m 2 were included. For every g/day decrease in dietary potassium intake, the estimated mean daily fiber intake was 5.1 g lower (95% confidence interval (CI), 4.3–5.9 g/day; p  < 0.001). Neither dietary potassium intake ( p  = 0.40) nor dietary fiber intake ( p  = 0.43) was associated with circulating potassium in a model adjusted for time point, eGFR, treatment with a renin–angiotensin–aldosterone system blocker, serum bicarbonate concentration, and body surface area. Conclusions Dietary potassium and fiber intake are closely related but were not associated with circulating potassium levels in pediatric CKD. Graphical abstract A higher-resolution version of the graphical abstract is available as Supplementary information.