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Erschienen in:
01.07.2011 | Clinical Quiz
An unusual case of hyperkalaemia in infancy: answer
Erschienen in: Pediatric Nephrology | Ausgabe 7/2011
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1.
The child has presented in infancy with hyperkalaemia associated with a hyperchloraemic metabolic acidosis and a normal anion gap of 11 (normal 10–14). His estimated glomerular filtration rate (eGFR) is normal. Hyperkalaemia in the presence of eGFR >15 mL/min/1.73 m2 is generally due to aldosterone deficiency or aldosterone resistance in the distal nephron.
$$ {\hbox{TTKG}} = \left[ {{\hbox{Urine }}{{\hbox{K}}^{ + }} \times {\hbox{Plasma osm}}} \right]/\left[ {{\hbox{Urine osm}} \times {\hbox{Plasma }}{{\hbox{K}}^{ + }}} \right] $$