Fluid replacement device

A fluid therapy system, comprising:

• a urine measurement device configured to measure urine output from a patient;
• a pump configured to provide a fluid to the patient;
• one or more processors;
• and
• tangible, non-transitory computer-readable media having instructions that, when executed by the one or more processors, cause the fluid therapy system to perform operations comprising
• causing the fluid to be infused to the patient at a first infusion rate;
• obtaining a first urine output rate of the patient via the urine measurement device;
• based at least in part on the first urine output rate, obtaining an actual fluid balance of the patient;
• receiving an input corresponding to a desired fluid balance of the patient;
• and
• based on a difference of the actual fluid balance and the desired fluid balance, causing the fluid to be infused to the patient via the pump at a second infusion rate,
• wherein
• the first infusion rate is less than the first urine output rate by a first predetermined threshold,
• the second infusion rate is less than a second urine output rate by a second predetermined threshold,
• the second urine output rate is greater than the first urine output rate, and
• the second predetermined threshold is greater than the first predetermined threshold.