It is Halloween! Your best buddy was chased down by a vampire, and was caught. T

Question

It is Halloween! Your best buddy was chased down by a vampire, and was caught. The vampire 'fed' on your buddy, but your buddy did not taste very good to the vampire, so the vampire only ate 1.5 L of blood before letting your buddy go. Assume that the vampire saliva did not have any components in it that would interfere with the normal physiological response to hemorrhage. Use the table below (describing events related to hemorrhage) Total blood volume (mL) Erythrocyte volume (mL) Plasma volume (mL) normal 1 hour after hemorrhage 18 hours post hemorrhage 5000 2300 2700 4000 1840 2160 4900 1840 3060

Explanation / Answer

Hematocrit means volume percentage of erythrocytes in blood..

Heamatocrit ={erythrocytes volume ÷total blood volume] ×100

So at t=0 hematocrit =2300/5000 ×100=46%

At t=18hrs after haemorrhage hematocrit =1840/4900 ×100=37.55%

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