<prompt> Edema occurs when plasma protein level is below?5 mgdl15 mgdl10 mgdl20 mgdl  <response>: Following conditions can cause edema:-1 The increased hydrostatic pressure of capillaries: It causes an increase in outward driving force. It may bedue to impaired venous return e.g. in CHF or DVT.2 Decreased plasma osmotic pressure of capillaries: It causes decrease in inward driving force.It results from Hypoproteinemia. When total plasma protein is below 5 gmdl normal 6-8gmdl oralbumin is below 25 gmdl normal 3.5-5 gmdl edema takes place. Conditions causinghypoproteinemia are a nephrotic 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: It causes expansion of plasma volume hydrostatic pressure and dilution of plasma proteins osmotic pressure. The conditions responsible for this type of edema are ARF, acute glomerulonephritis, renal hypoperfusion, and increase renin angiotensin aldosterone system RAAS activity. 