实验诊断学

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laboratory. diagnostics. 实验诊断学. 临床. 选择检验项目(筛选). 分析检验结果. 进一步选择检验项目(鉴别、诊断). 诊断. 血液一般检查. general examination of blood. RBC neutrophil hematocyte eosinophil (45%) WBC basophil blood monocyte platelet lymphocyte Fg plasma water (55%) serum - PowerPoint PPT Presentation

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  • general examination of blood

  • RBC neutrophil hematocyte eosinophil 45% WBC basophilblood monocyte platelet lymphocyte Fg plasma water 55% serum solid element

  • 1.blood cell counterythrocyte countmethod reference interval clinical significanceleukocyte countplatelet countreticulocyte count

  • 1)

    (1)()

    0.38ml 20ul

  • Neubauer

  • 3mm WBC WBC

    WBC WBC

    1mm WBC/L=N/41010620

  • (2)automated hematology analyzer,AHAprincipal of coulter hematology ststemhistogram

  • erythrocyte histrogam

    normalcyte

    microcyte macrocyte

    36 360 fl

  • leukocyte histogram

    L M N 35 90 160 450 fl

  • platelet histogram

    2 20 fl

  • 3.5~51012/L 4~5.51012/L2)

  • 1anemia

  • 2

  • granulocyte poolMitotic poolMaturation poolStorage poolMargin poolCirculating pool

    10 Bone marrow 10h 1~2)

  • 4~10109/L

  • 2.determining the concentration of hemoglobinHemoglobin Structuremethodhemiglobincyanide (HiCN)method

  • THE NORMAL HUMAN HEMOGLOBENS

    HemoglobinGlobin ChainsMajor SourceEmbryoNeonateAdult%%%Gower12/2Yolk sac5000Gower22/2Yolk sac2500Portland2/2Yolk sac2500Hb F2/G2aLiver,spleen07512/A2Hba2/2Bone marrow02597HbA22/2Bone marrow013

  • 120160g /L110150g/L170200g/L7094.2122.2g/L86.5111.8g/L

  • layer after blood centrifuged 3. hematocrit(packed cell volume) definition Relative volume of blood occupied by erythrocytes. An average figure for humans is 45 per cent, i.e. A packed red cell volume of 45ml in 100ml of blood.

  • 0.470.04 0.420.05 3HematocritCentrifugingHematocrit is % of total volume made of cellsAHAHCT=RBCMCV

  • 4.erythrocyte indicesMean corpuscular volume MCV=Hct1031012/RBC fL 80~90fLmean corpuscular hemoglobin MCH=Hb1012/RBCPg 27~32Pgmena corpuscular hemoglobin concentration MCHC=Hb/Hct 320~360

  • MCV(fl) MCH(pg) MCHC (%) >100 >31 32-36

    82-95 27-31 32-36

  • 5.red blood cell volume distribution width, RDWCV 11.6%14.6%

  • 1) 1983BessmanMCVRDW 2)iron deficiency anemia, IDA RDW95% 3) RDW-RDW

  • 6.Erythrocyte sedimentation rate(ESR310min40minThe ESR measures the distance a red blood cell falls in a vertical tube over a given period of time.

  • 1)2) () 18~50010mm/h020mm/h >65510mm/h

  • 3HIVESRSLEESRNHLHLM

  • 7. reticulocyte(Ret ribomucleic acidRNAbrilliant cresyl blue79mICSH4:0.20.3IV0.70.8III

  • 1) 2) -YRNAflow cytometryFCM 3)

    0.005~0.015 (24~84)109/L

  • RetRctRct%mean reticulocyte volume, MCVrreticulocyte hemoglobin distribution width , HDWrreticulocyte hemoglobin content , CHrmean reticulocyte hemoglobin concentration , MCHCrLFRMFRHFRreticulocyte maturity index RMIRMI=MFR+HFR/LFR100

  • 1 122 Ret3 clinical significance of reticulocyte count

  • 8blood film examinationmaking and staining blood film:

  • obseve erythrocyte form and distributionobserve leukocyte formobserve platelet formobserve parasite

  • observe erythrocytecoloursizeshapeabnormal structure normal erythrocytered cell observed under electric microscope

  • (rouleaux formation)

  • observe leukocytedifferential leukocyte count abnormal white cell

  • (5%)10%25%1)shift to the left()

  • 2)shift to the right53%

  • (1)(neutrophilia)70%7l09/L

  • (1020) l09/L(2030) l09/L

  • ()1236h ,10l09/L12d112h(1020) l09/L

  • (acute myelogenous leukemiaAML)(acute lymphocytic leukemiaALL)(1050) l09/L100l09/L10%(100600) l09/L 50l09/L

  • 2neutropenia l09/Lgranulocytopenia0.5l09/L(agranulocytosis)

  • 12(aleukemic leukemia)34systemic lupus erythematosusSLE5

  • 4

    /

  • 1DhlePelgerHuetChediakHigashiMayHegglinAlder-Reilly

  • 21abnormal lymphocyte23ALLCLL

  • 3(plasma cellflame cell

  • Dacie and Lewis PRACRICAL HAEMATOLOGY TENTH EDITIONClinical Laboratory MedicineKenneth D. McClatchey

  • ?Coulter,???Hct??Ret???