Edema Flashcards
(30 cards)
Edema
Excess fluid build up outside of cell/vascular compartments (i.e. body cavities)
Is edema a disease?
No, it is a symptom
What is the only evidence of edema in tissues?
Increase in organ size
Ascites/hydroperitoneum
Edema in peritoneal cavity
Hydrothorax
Edema in pleural cavity
Hydropericardium
Edema in pericardial sac
Hydrometra
Edema in uterus
Anasarca
Severe and generalized edema with extensive subQ tissue swelling
Interstitium
Space between tissue compartments
Where does tissue edema accumulate
Interstitium
Starling equilibrium
Equation to show fluid movement due to filtration across the capillary walls, balance between filtration and absorption pressure
Colloidal-osmostic pressure
Oncotic
Filtration pressure
Difference between hydrostatic and colloidal osmotic pressure in arterial end of capillaries
Absorption pressure
Difference between hydrostatic and colloidal osmotic pressure in venous end of capillaries
What compensates for the difference between the filtration and absorption pressures
Lymphatics
What systems work together to maintain fluid balance
Circulatory and lymphatic
What happens when water and electrolytes escape the circulatory system faster than they can return
Edema
In edema, there is a decrease in ____ and and increase in ____
Plasma colloidal-osmotic pressure; hydrostatic
Colloidal-osmotic pressure
Effect of large molecules in solution on the chemical potential of water
What exert the main osmotic pressure to oppose the hydrostatic pressure in capillary beds
Proteins, specifically albumin
Hypoalbuminemia
Low albumin, leads to low colloidal-osmotic pressure and edema
If the hydrostatic pressure increases in the venous end of the capillary…
Fluid filtered at the arterial end fails to return to circulation, results in edema
Ascites
Swelling of the abdomen
Pathophysiology of edema
Decreased PCO pressure, increase blood hydrostatic pressure, lymphatic obstruction, vascular permeability
