The Nurse Is Performing Venipuncture on a Client to Obtain

The nurse is performing venipuncture on a client to obtain blood for ordered tests. Which guideline is recommended for this procedure?

A) Apply the tourniquet about 4 to 6 in above the proposed site.
B) Check for the presence of an apical pulse and locate a peripheral vein.
C) Ask the client to open and close the fist, ending with an open fist.
D) If a vein is difficult to access, raise the arm above the level of the heart.