Net Filtration Pressure: The Driving Force For Fluid Exchange Across Membranes
Net filtration pressure (NFP) is the driving force for fluid movement across semipermeable membranes. It is calculated as the difference between filtration pressure, determined by hydrostatic and osmotic pressures, and osmotic pressure. Positive NFP promotes fluid movement from the capillary to the interstitial space, while negative NFP draws fluid into the capillary. Understanding NFP is…