《血常规检测》PPT课件.ppt
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1、,谢 海 啸 The first affiliated hospital of WMC,Blood routine test(BRT)-血常规检验,P250,标本采集Sample collecting,mostly the sample is colleted from vein,After sterilize with iodine tincture and alcohol,It can also be collected from capillary by pricking the fingertip,heel or earlobe,But we always choose vein as
2、 the pricking position,样本采集后的处理,立即加入加有抗凝剂的试管内,并混匀抗凝剂:EDTA-K2,Contents(3 parts),RBCs(red blood cells)红细胞WBCs(white blood cells)白细胞PLTs(platelets)血小板,The number of red blood cells(RBCs)The amount of hemoglobin in the blood(Hb)Hematocrit(Hct)mean corpuscular volume(MCV)Mean corpuscular hemoglobin(MCH)M
3、ean corpuscular hemoglobin concentration(MCHC)7.Red blood cell volume distribution width(RDW),RBC related parameters,the report of BRT for a girl,it showsRBC:3.0 1012/L Hb:108 g/L MCV:70fl MCHC:290g/L MCH:22pg,case,We can judge,The girl gets anemia.We can primary diagnose that maybe she is IDA,or ch
4、ronic blood loss.Combined with her clinical manifestation and other examinations,we can get the last diagnosis.,Back,回顾content1,Normal valuesRBC:Male:4.0-5.5 1012/L Female:3.5-5.0 1012/LHb:Male:120-160 g/L Female:110-150 g/L,RBC and Hb,临床意义:,增多:a.相对性增多(脱水):如呕吐、烧伤、大量 出汗时致血液浓缩。b.绝对增多:继发性红细胞增多症如 各种心肺疾病
5、所致红细胞代偿性或非 代偿性增加、真性红细胞增多症。,减少:a.生理性减少如儿童、妊娠、老年等。b.病理性减少见于各种贫血。,Back,课外了解,HCT(P262),Back,Definition:抗凝全血经离心沉淀后测得的红细胞占全血的容积百分比,calculate formula:血细胞体积/全血体积,HCT:0.40.5左右,临床意义同RBC和Hb,血细胞比容,MCV(mean corpuscular volume)平均红细胞容积系指全血中每个红细胞的平均体积,以飞升(fl)为单位(unit:1L103ml=106ul、109nl、1012pl=1015fl)1滴血有500万个红细胞MC
6、V=HCT/RBC(个数)反映平均红细胞的体积,参考范围80-100fl,MCV,MCH,MCHC(P262),MCH(mean corpuscular hemoglobin)平均红细胞血红蛋白量系指每个红细胞内所含血红蛋白的平均量,以皮克(pg)为单位。(unit:pg10-12g)MCH=Hb/RBC(个数)反映了每个红细胞内的平均血红蛋白含量,参考范围27-34pg,MCHC(mean corpuscular hemoglobin concentration)平均红细胞血红蛋白浓度系指每升血液中平均所含血红蛋白浓度,以g/L表示MCHC=Hb/HCT(MCH/MCV=HbRBC/HCTR
7、BC)反映了血液中血红蛋白浓度 参考范围320-360g/L(32-36%),MCV,MCH and MCHC reflect the size and hemoglobin concentration of individual RBC It is useful in the diagnosis of various types of anemiaApplication:P263,table 4-2-4,MCV、MCH、MCHC在贫血的形态学分类上具重要意义,Back,RDW(RBC volume distribution width)红细胞体积分布宽度反映红细胞体积大小的变异性,变异性大,
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