The initial value for calculations of fluid amounts is patient’s dry weight.
As a maximum amount of fluid intake is considered the maximum allowed ultrafiltration during dialysis that should not exceed 900 millilitres per hour.
As a second parameter we consider the maximum recommended patient’s weight gain which should not exceed 5% of one’s dry weight.
The lower of these two values is then used to set one’s maximum limit of fluid intake between two dialysis sessions.
The optimum limit (green numbers) is set to 1 liter of fluids per day plus one’s residual diuresis.