When is a bone marrow aspirate required?

Bone marrow aspiration is a common diagnostic technique for taking bone marrow fluid, and its examination contents include cytology, protozoa and bacteriology. The sites generally selected for bone marrow puncture are (1) anterior superior iliac spine: the puncture point is usually taken 1 to 2 cm behind and above the anterior superior iliac spine, where the bone surface is flat, easy to fix, and safe to operate; (2) posterior superior iliac spine: located in The bony prominence on both sides of the sacral vertebrae and above the buttocks; 3. Manubrium: This place is rich in bone marrow. When the puncture of the above-mentioned parts fails, the manubrium can be punctured, but the bone here is thin, and there are atria and great blood vessels behind , to prevent the danger of penetration, and it is less used; ④ Spinous process of lumbar vertebra: It is located at the protrusion of the spinous process of lumbar vertebrae and is rarely used. The patient should do the corresponding. Position The sternum and the anterior superior iliac spine puncture take the supine position, the former also needs to use a pillow behind the back to make the chest slightly protrude. The lateral decubitus position should be taken during puncture of the posterior superior iliac spine. The lumbar spinous process was punctured in a sitting or lateral position.

Bone marrow examination is suitable for: 1. Diagnosis, differential diagnosis and treatment follow-up of various blood diseases. 2. Unexplained increase or decrease in the number of red blood cells, white blood cells and platelets and morphological abnormalities. 3. The diagnosis and differential diagnosis of unexplained fever can be used for bone marrow culture, bone marrow smear to find parasites, etc.

Bone marrow aspirate is a cytological examination of the bone marrow smear to understand the formation of various cells in the bone marrow, the changes in the morphology and composition of various cells, and the discovery of abnormal cells, so as to confirm the diagnosis, observe the curative effect, and estimate the prognosis.

Bone marrow puncture is a commonly used examination method for the diagnosis of blood diseases. It is necessary in the diagnosis and differential diagnosis of many blood diseases, especially many malignant blood diseases. Some people worry that bone puncture will hurt the body. This kind of worry is unreasonable. The smear test only needs about 0.2 ml of bone marrow fluid, which is negligible for thousands of milliliters of bone marrow fluid in the whole body, and has no effect on the body. Bone marrow biopsy takes only 1 cm of bone marrow tissue and has no effect on the body. Therefore, patients do not have to worry about problems such as a decrease in hematopoietic ability caused by the extraction of bone marrow.

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