<prompt> Edema is due to-Increased capillary osmotic pressureDecreased lymph flowDecreased hydrostatic pressure in capillariesBoth of the above  <response>: Pathogenesis of edemaFollowing conditions can cause edema :-1 The increased hydrostatic pressure of capillaries, e.g. in CHF or DVT.2 Decreased plasma osmotic pressure of capillaries: It results from Hypoproteinemia. When total plasma protein is below 5 gmdl normal 6-8 gmdl or albumin is below 2-5 gmdl normal 3.5-5 gmdl edema takes place. Conditions causing hypoproteinemia are nephritic syndrome, liver cirrhosis, protein-losing enteropathy, and PEM.3 Defective removal of interstitial fluid by lymphatics: It is due to lymphatic obstruction, which may be inflammatory, neoplastic, post-surgical and post-irradiation.4 Increased vascular permeability: It occurs in acute and chronic inflammation, and during angiogenesis new vessels are leaky.5 Sodium salt and water retention: The conditions responsible for this type of edema are ARF, acute glomerulonephritis, renal hypoperfusion, and increase renin angiotensin aldosterone systemRAAS activity. 