Causes Of Failure Of Bone Marrow Puncture Needle
Dec 08, 2015
1. Bone marrow necrosis
Sometimes when leukemia cells proliferate in the bone marrow in large quantities, they are also accompanied by massive lysis and necrosis, which is called bone marrow necrosis. At this time, the bone marrow fluid is very thin, and there are almost no complete cells in the smear observation, and only the remaining broken cells are left, which cannot be identified or diagnosed. Fortunately, this kind of situation is very rare, hundreds of punctures can only happen once.
2. Dry pumping
(1) Excessive cell proliferation Leukemia cells proliferate excessively in the bone marrow, the cells are very crowded, and they are difficult to extract through negative pressure, which is called "dry pumping".
(2) The number of nucleated cells in the bone marrow of a small number of acute leukemia patients with hypoplasia or fibrous tissue proliferation is significantly reduced, and the absolute number of leukemia cells is also significantly reduced. Hypoproliferative acute leukemia, "dry pumping" can also occur.
Bone marrow biopsy can be used to solve the problem in the latter two cases. A thicker bone marrow puncture needle with a device that can hook bone marrow tissue is installed at the front end. The specific operation steps are roughly the same as those of bone marrow puncture, which will not increase the number of patients. s pain. The extracted bone marrow tissue can be smeared at the same time, and the pathological section can be made after fixation, and the diagnosis can be made.
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