Final answer:
Negative pressure in dialysis refers to the movement of fluid out of the capillary during reabsorption. It is represented by a net filtration pressure (NFP) that is a negative number.
Step-by-step explanation:
Negative pressure in dialysis refers to the movement of fluid out of the capillary during reabsorption. In dialysis, such as hemodialysis, waste molecules and excess water are forced through a semipermeable membrane into a sterile solution called dialysate. This movement of fluid out of the capillary is represented by a net filtration pressure (NFP) that is a negative number. It is calculated by subtracting the capillary hydrostatic pressure (CHP) from the blood colloidal osmotic pressure (BCOP).
Negative pressure in dialysis refers to the pressure used to draw fluid from the blood across a semipermeable membrane into the dialysate, counteracting normal osmotic and hydrostatic pressures to filter out waste molecules and excess water from a patient's blood during hemodialysis.