6. 2. Increased Capillary pressure
Excessive retention of salts and water by kidnay
High venous pressure and venous constriction
Decreased arteriolar resistance
7. 3. Decreased plasma proteins
Loss of protein in urine
Due to kidney damage and disorders like nephrotic
syndrome
Loss of protein from burns and wounds
8. 4. Blockage of lymph return
Cancer
Bacterial infection (filiara nematodes)
Surgery
9. Failure of lymph vessels to return fluid and
protein to the blood is called LYMPHEDEMA.
protein conc: Colloid osmotic pressure
More fluid filtered from capillaries causes
edema called lymphedema.
10. Low compliance of interstitium in the negative
pressure range
Continuous lymph flow , which can rises upto
10 – 50 folds
Washing out of interstitial fluid protein
11. Low compliance contributes 7mmhg
Increased lymph flow contributes 7mmhg
Washed out protein 3mmhg
TOTAL 17mmhg
Capillary pressure must rises about this level to
cause edmea.