how to calculate net filtration pressure of capillary?

H

Hanifa

New member
Capillary hydrostatic pressure at arterial end 35 mmHg
Plasma colloid osmotic pressure 15 mmHg
Interstitial fluid hydrostatic pressure 1 mmHg
Interstitial fluid osmotic pressure 3 mmHg
cheers
is the net filtration pressure greater at the arterial end of the capillary than the venous end or is it equal?? I am really confused helpppp
 
To calculate NFP at arteriole end
capillary hydrostatic pressure (35 mmhg) + interstitial fluid osmotic pressure (3 mmhg) = 38 mmhg.
plasma colloid osmotic pressure (15 mmhg) + interstitial fluid hydrostatic pressure (1 mmhg)=16 mmhg

Subtract 38 mmhg from 16 mmhg to get 22 mmhg.

To calculate at venuos end
capillary hydrostatic pressure (16 mmhg) + interstitial fluid osmotic pressure (3 mmhg) = 19 mmhg.
plasma colloid osmotic pressure (15 mmhg) + interstitial fluid hydrostatic pressure (1 mmhg)=16 mmhg

Subtract 19 mmhg from 16 mmhg to get 3 mmhg.

So the Net Filtration Pressure is greater at the arterial end (22 mmhg) than the venous end (3 mmhg)
 
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