Hyponatraemia-induced rhabdomyolysis complicated by anuric acute kidney injury: a renal replacement conundrum

Hyponatraemia-induced rhabdomyolysis is a rare, but reported phenomenon, particularly in patients with chronic schizophrenia on depot antipsychotics prone to psychogenic polydipsia. To the best of our knowledge, there are no reported cases of hyponatraemia-induced rhabdomyolysis complicated by oligo-anuric acute kidney injury (AKI) requiring continuous renal replacement therapy (CRRT). The initiation of CRRT is complicated in severe hyponatraemia, predominantly due to the need to avoid rapid changes in tonicity associated with rapid changes in sodium. We report a case of severe hyponatraemia (104 mmol/L) complicated by oligo-anuric rhabdomyolysis-induced AKI and our management of the renal prescription.

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