Edema Dr. Khurram Irshad

Diffusion between Intracellular, Interestitial fluid and Plasma

Arterial end of Capillary Outward Forces Capillary Hydrostatic pressure Pc=30 mm of Hg Negative Interestetial fluid pressure Pif =3 mm of Hg Interestitial fluid colloid osmotic pressure =8 mm of Hg Total Outward Force =41 mm of Hg Inward Forces Plasma Colloiud Osmotic pressure=28 mm of Hg Net Filtration Pressure (41 – 28) = 13 mm of Hg

Venous end of Capillary Outward Forces Capillary Hydrostatic pressure Pc=10 mm of Hg Negative Interestetial fluid pressure Pif =3 mm of Hg Interestitial fluid colloid osmotic pressure =8 mm of Hg Total Outward Force =21 mm of Hg Inward Forces Plasma Colloiud Osmotic pressure=28 mm of Hg Net Reabsorption Pressure (28 – 21) = 7 mm of Hg

Starling Equilibrium for capillary Exchange Outward Forces Mean Capillary Pressure =17.3 mm of Hg Negative Interestetial fluid pressure Pif =3 mm of Hg Interestitial fluid colloid osmotic pressure =8 mm of Hg Total Outward Force =28.3 mm of Hg Inward Forces Plasma Colloiud Osmotic pressure=28 mm of Hg Net Outward Force (28 .3– 28) = 0.3 mm of Hg

Edema Excessive Accumulation of Fluid in Interestitial Space

Edema Feet

Pitting Edema

Elephantiasis