After haemodynamic stabilisation, a 70 kg man with little peripheral oedema has chronic hypernatraemia (sodium 164 mmol/L). Estimate his free-water

Question

After haemodynamic stabilisation, a 70 kg man with little peripheral oedema has chronic hypernatraemia (sodium 164 mmol/L). Estimate his free-water deficit using total-body water 0.5 × body weight and a target sodium of 140 mmol/L. Ignore ongoing losses.

Accepted Answer

Approximately 6.0 litres

Answer

Approximately 12.0 litres

Answer

Approximately 3.0 litres

Answer

Approximately 4.2 litres

Answer

Approximately 8.5 litres

Hypernatraemia from dehydration — SCE Acute Medicine MCQ

After haemodynamic stabilisation, a 70 kg man with little peripheral oedema has chronic hypernatraemia (sodium 164 mmol/L). Estimate his free-water deficit using total-body water 0.5 × body weight and a target sodium of 140 mmol/L. Ignore ongoing losses.