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Low sodium and high potassium suggest aldosterone deficit. Low $\mathrm{N}{\mathrm{a}}^{+}$, high ${\mathrm{K}}^{+}$, kidney dysfunction and severe inflammatory disturbance point toward impaired adrenal cortical function. The adrenal cortex secretes aldosterone, which promotes $\mathrm{N}{\mathrm{a}}^{+}$ reabsorption and ${\mathrm{K}}^{+}$ excretion, and glucocorticoids that suppress excessive inflammation.