Question:
During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein ? [Use the density of whole blood from Table 10.1].
Answer:
Density of the whole blood (ρ) = 1.06 x 103 Kg/m3
Pressure (p) = hρg
2000 = h x 1.06 x 103 x 9.8
h = 2000/ 1.06 x 103 x 9.8 = 0.2 m
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