Bone marrow megakaryocyte count and classification

The number and classification of bone marrow megakaryocytes is a project of bone marrow cytology. Bone marrow cytology is the most valuable for diagnosing hematopoietic diseases. It is also useful for diagnosing other non-hematopoietic diseases, hepatosplenomegaly with unexplained fever, cachexia and unexplained causes. There is a significant differential diagnosis. Basic Information Specialist classification: cardiovascular examination classification: microscopy Applicable gender: whether men and women apply fasting: not fasting Tips: Preoperative patients should follow the doctor's instructions to position themselves. Normal value 1. The total number is 7 to 35 / (1.5 × 3 cm) 2. 2. Classification Original type 0 (0%). Early and young type 0 ~ 0.05 (0 ~ 5%). The young and medium type is 0.10 to 0.27 (10% to 27%). The late-type is 0.44 to 0.60 (44% to 60%). Naked core 0.08 ~ 0.30 (8% ~ 30%). Denaturation 0.02 (2%). Clinical significance (1) Increased chronic myeloid leukemia, polycythemia vera, essential thrombocythemia, myelofibrosis, hypersplenism, acute massive hemorrhage, etc. (2) to reduce acute and chronic aplastic anemia, various acute leukemia, thrombocytopenic purpura, paroxysmal nocturnal hemoglobinuria. Low results may be diseases: pregnancy with idiopathic thrombocytopenic purpura results may be high disease: secondary thrombocytopenia precautions Preoperative preparation: The patient is placed in accordance with the doctor's instructions. Inspection process Inspection method: bone marrow examination. Inspection process: 1. Select the puncture site. 2. Anesthesia. 3. Fix the length of the needle. 4. The doctor's left thumb and finger are fixed at the puncture site. The right hand-held bone marrow puncture needle is inserted perpendicularly to the bone surface. If the sternum is puncture, it should be inserted at an angle of 30o to 40o with the bone surface. When the needle tip touches the bone, rotate the needle along the long axis of the needle of the needle and push it forward to slowly penetrate the bone. 5. Extract the bone marrow fluid and pull out the needle core, connect the dry syringe (10m1 or 201m1), and use the appropriate force to extract the bone marrow fluid. Not suitable for the crowd Hemophilia and disseminated intravascular coagulation, if there is no special need, do not do bone marrow puncture. Adverse reactions and risks May cause bleeding and infection.