What should the nurse do to prevent hemoconcentration when collecting blood specimens?
a. Encourage the patient to drink fluids.
b. Do not keep the tourniquet on the arm too long.
c. Dilute the specimen immediately.
d. Use a large-bore needle.
B
Hemoconcentration is the reduced volume of plasma water and the increased concentration of blood cells, plasma proteins, and protein-bound constituents. It can be caused from prolonged standing or a prolonged time of application of a tourniquet during venipuncture. The nurse should not keep the tourniquet on the patient's arm too long.
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