Hyponatraemia diagnostic algorithm
- Created by: MazzaW
- Created on: 08-12-19 16:18
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- Hypo-natraemia
- Factitious? (Check glucose)
- Euvolaemic
- Urine Na >40 or osmolality >100
- SIADH, gluco-corticoid deficiency, severe hypo-thyroidism, chronic water load
- Urine Na < 40 or osmolality < 100
- Acute water load, psychogenic polydipsia, tea and toast/beer diet
- Urine Na >40 or osmolality >100
- Hypovolaemic
- Urine Na >20
- Adreno-cortical insufficiency, renal failure or disease, diuretics, cerebral salt wasting
- Urine Na < 20
- Vomiting, diarrhoea, skin losses
- Urine Na >20
- Hyper-volaemic
- Urine Na >20
- Renal failure or disease
- Urine Na < 20
- CCF, cirrhosis, nephrotic syndrome, primary polydipsia
- Urine Na >20
- Euvolaemic
- Factitious? (Check glucose)
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