No changes necessary. No changes necessary. Put on surgical gown. Bone-marrow aspiration causes pain when the instrument passes through bone and when bone marrow is aspirated. Local anesthesia helps but doesn't completely relieve discomfort.
Discomfort disappears when the test is finished.
Sterile, disposable equipment prevents contamination or spread of infection. There is no risk of becoming infected with the hepatitis virus, AIDS virus or any other germ. Bone-marrow biopsy needle. Skin over the vein to be stuck is cleaned with alcohol or other antiseptic on a piece of cotton. When blood is drawn from a vein, the operator feels the vein to be used then punctures both the skin and vein in one quick stroke.