Precautions for bone marrow aspiration needle

1. The blood clotting time check should be done before the operation, and special attention should be paid to the operation in patients with bleeding tendency. Bone marrow aspiration is prohibited for patients with hemophilia.

2. The syringe and puncture needle must be dry to avoid hemolysis.

3. After the puncture needle enters the bone, avoid swinging too much to avoid breaking; sternal puncture should not use too much force to prevent penetration of the inner bone plate.

4. If the amount of aspirated fluid is used for cell morphology inspection, it should not be too much, as too much will dilute the bone marrow fluid and affect the judgment of nucleated cell proliferation, cell count and classification results.

5. The bone marrow fluid should be smeared immediately after taking it out, otherwise it will coagulate quickly and make the smear failure.

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