Blood filtration via convection across semipermeable membrane (null)

Blood filtration via convection across a semipermeable membrane refers to the process used in therapies such as hemofiltration, where blood is passed through an extracorporeal circuit containing a synthetic or biological semipermeable membrane. Under positive hydrostatic pressure, water and dissolved solutes are forced across the membrane by convection—meaning they are carried along with the flow of water—while larger components like cells and most proteins are retained. This method is distinct from diffusion-based dialysis because it can remove both small and large molecular weight solutes efficiently. The filtered waste products and excess fluid are discarded as ultrafiltrate, while replacement fluid may be added before returning the cleansed blood to the patient. This technique is primarily used for renal replacement therapy in acute or chronic kidney failure settings[5][6]. It does not refer to any specific molecule or receptor but rather describes an engineered physiological process that mimics natural glomerular filtration in kidneys. Note: This entry does *not* correspond to a single molecule, protein, receptor, enzyme, transporter, or other canonical therapeutic target class. Instead it describes a medical procedure/process using physical principles of fluid movement across membranes for clinical benefit. Therefore: - is_target: false — this is not considered a therapeutic target at the molecular level. - is_incorrect: true — this entry should not be treated as an individual druggable target; it represents technology/procedure rather than biology at the molecular level. If you require information on specific molecules involved in natural renal filtration (e.g., aquaporins or glomerular basement membrane proteins), please specify further.

Other names

HemofiltrationConvective blood filtrationRenal replacement therapy (by convection)Extracorporeal blood purification (convective)

Convection-driven solute and water removal through a semipermeable membrane under hydrostatic pressure[5]