Edema occurs when there is a decrease in plasma oncotic pressure, an increase in hydrostatic pressure, an increase in capillary permeability, or a combination of these factors. Edema also can be present when lymphatic flow is obstructed.
What is meant by Oncotic pressure?
Oncotic pressure, or colloid osmotic-pressure, is a form of osmotic pressure induced by the proteins, notably albumin, in a blood vessel’s plasma (blood/liquid) that displaces water molecules, thus creating a relative water molecule deficit with water molecules moving back into the circulatory system within the lower …
What is the difference between hydrostatic pressure and blood pressure?
Hydrostatic pressure refers to the pressure that any fluid in a confined space exerts. … The pressure that blood exerts in the capillaries is known as blood pressure.