During a venipuncture, if the area surrounding the vein begins to swell, creating a hematoma, you should first:
O probe to get back into the vein.
.
O
remove the tourniquet.
O take the needle out of the arm.
o
finish collecting the specimens needed.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.