How is bone marrow aspirate performed?

Bone marrow acupuncture is a commonly used examination method in the department of hematology to observe the hematopoietic function of the bone marrow, puncture the bone marrow to extract the bone marrow fluid, and then analyze it under a microscope. The selected site is the posterior iliac, that is, the posterior crotch. Find the puncture site on the pelvis. The posterior iliac is a commonly used site, as well as the anterior superior iliac spine or the sternum. The sternum is generally easy to operate, but the risk is quite high. The sternal puncture injures the large blood vessels behind, putting the patient's life in danger.

Children can choose to perform puncture before the tibia, usually by disinfection, drape, injection of 2 percent lidocaine for local anesthesia, and then use a bone penetrating needle with a core to drill into the bone surface. There will be a sense of breakthrough in the bone marrow cavity. After pulling out the needle core, connect a dry syringe to extract bone marrow fluid. When the bone marrow is extracted, the patient will feel sore and swollen. The extracted bone marrow fluid is smeared on a glass slide for microscopic analysis, and a few milliliters of bone marrow fluid can also be drawn for chromosome, flow and molecular genetic testing to clarify the characterization of the disease.

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