Case Studies: Please write your answers on a separate sheet of paper. Case Study

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Case Studies: Please write your answers on a separate sheet of paper. Case Study: You are working in the ICU. Your current patient was in a nasty car accident last night dropping liters on the pavement), it is now 12 hours later and your pa way to do this is to do a blood transfusion: Consider: tient is starting to stabilize. One Part 1:4 points Your patient's blood pressure is low, it is at 104/60. This effects the Starling forces at the capillary. The arteriole blood pressure is 30 mmHg and venous pressure is 12 mmHg. Because they replaced volume with ringers and plasma instead of while blood, so their blood oncotic pressure is a little low at 25 mmHg. The hydrostatic pressure in the tissues remains at 0 mmHg, and the tissue oncotic pressure is still at 3 mmHg A) Calculate the pressures of filtration at the arteriole end and reabsorption at the venous end of the capillary B) What is the net pressure? C) What does this mean for the net flow of water? What will this do for the blood volume?

Explanation / Answer

A.ans)Starling equation gives:

Jv=Kf([Pc-Pi]-?[?c-?i])

Jv =is the net fluid movement between compartments.

[Pc-Pi]-?[?c-?i] is the net driving force

Pc is the capillary hydrostatic pressure

Pi is the interstitial hydrostatic pressure

?c is capillary oncotic ressure

?i is interstitial oncotic ressure

Kf is filtration coefficient.

? is reflection coefficient

B) Net pressure=(NFP): It is the force driving fluid out of the capillary into the tissue spaces measured by the difference of the capillary hydrostatic pressure and the blood colloidal osmotic pressure.

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