Which condition is most likely to cause formation of edema?
A. Increased plasma osmotic pressure, increased plasma hydrostatic pressure
B. Increased plasma osmotic pressure, decreased plasma hydrostatic pressure
C. Decreased plasma osmotic pressure, increased plasma hydrostatic pressure
D. Decreased plasma osmotic pressure, decreased plasma hydrostatic pressure
C
Both decreased plasma osmotic pressure and increased plasma hydrostatic pressure are forces that tend to move fluid out from the plasma volume and into the interstitial space. Increasing the interstitial fluid volume leads to the formation of visible edema that forms pits when pressure is applied.
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