The bone marrow puncture site of the bone marrow puncture needle

The posterior superior iliac spine or anterior superior iliac spine of the pelvis is usually selected for bone marrow puncture, which has clear bone markers and no surrounding major blood vessels and nerve trunk, so it is safe. If multiple puncture sampling is not satisfactory, sternal puncture can be selected in a few cases. As long as the oblique marching needle (30° to 45° into the sternum) is performed without penetrating the sternum, it is also relatively safe. Before puncture, local anesthesia should be carried out at the puncture point. The anesthetics come from the skin and subcutaneous to the periosteum on the bone surface, so the puncture will not bring pain to the patient. Skilled operators usually can complete the puncture in more than 10 minutes, so there is no need to have any concerns. Cleaning (including bathing) should not be done 2 to 3 days after local application of sterile dressing to the puncture site to avoid local infection.

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