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A low serum sodium assessed through the patient's fluid status.
Assess fluid status first - it drives the whole differential.
Chronic Kidney Disease
A progressive, irreversible decline in kidney function.
Acute Kidney Injury
A rapid fall in kidney function over hours to days.
Approach to Hyperkalaemia
A high serum potassium that can cause fatal arrhythmia.
Urinary Tract Infection
Infection of the urinary system, usually by gut bacteria, common in women, ranging from a bladder infection to a kidney infection.