A Patient with Pancytopenia Has a Bone Marrow Aspiration from the Left

A patient with pancytopenia has a bone marrow aspiration from the left posterior iliac crest.Which action would be important for the nurse to take after the procedure?

A) Elevate the head of the bed to 45 degrees.
B) Apply a sterile 2-inch gauze dressing to the site.
C) Use a half-inch sterile gauze to pack the wound.
D) Have the patient lie on the left side for 1 hour.