A Patient Has a Bone Marrow Aspiration from the Posterior

A patient has a bone marrow aspiration from the posterior iliac crest. Before the procedure, the patient's vital signs were blood pressure 132/82 mm Hg and pulse 88 beats/min. One hour after the procedure, the blood pressure is 108/70 mm Hg and pulse is 96 beats/min. Which assessment is the least important for the patient at this time?

A) Observe the puncture site.
B) Check the patient's most recent CBC report.
C) Ask the patient about feelings of lightheadedness or dizziness.
D) Determine if the patient had any medications before the procedure.