Edema - patho Flashcards
What is edema
excess fluid in the ISF and ICF compartments
What are the 3 reasons that edema occurs
elevated hydrostatic pressure, diminished osmotic pressure, inflammation
How does elevated hydrostatic pressure cause edema
excess water in the bloodstream pushing water out of the bloodstream into interstitial and intracellular spaces
How does diminished osmotic pressure cause edema
a low amount of solutes in the bloodstream, keeps fluid in the ISF/ICF spaces, and does not pull fluid back into the bloodstream
How does inflammation cause edema
inflammation –> increased capillary permeability
How does dependent edema occur
weakened valve systems, lack of muscle contractions, gravitational forces
What is pitting edema
visible indentations when pressure is applied and fluid is displaced
What is third spacing
when fluids become hidden in body cavities normally free of fluids
What complications can third spacing cause
decreased heart and lung function due to a decrease in space to expand, fluid surrounds organs and interferes with functioning
