Add new attachment

Only authorized users are allowed to upload new attachments.

This page (revision-8) was last changed on 15-Oct-2013 15:27 by 1614216108

This page was created on 05-Dec-2012 14:12 by 1614216108

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Difference between version and

At line 1 added 12 lines
%%tabbedSection
%%tab-概述
巨幼细胞性贫血(megaloblastieanemia,MA)是由于维生素Bu、叶酸、内因子等缺乏导致DNA合成障碍,使细胞核(主要造血细胞和胃肠道内皮细胞)发育障碍所致的一类贫血。其骨髓中粒系、红系、巨系均呈巨幼变,这种细胞未发育到成熟即在骨髓内破坏(称为无效造血),而外周血表现为大细胞性贫血并有粒细胞和血小板数减少。
/%
%%tab-实验室检查
1.贫血可表现为单一红系减少,也可表现全血细胞减少。细胞形态学特征是本病诊断的主要依据。外周血中大卵圆形细胞、中性粒细胞核分叶过多,5叶者>5%,如见6叶者就应考虑有巨幼细胞贫血的可能。\\
2.骨髓呈增生象,巨幼红细胞占30%~50%,其中巨原、早红细胞可达半数以上,可见巨晚及巨杆状粒细胞;成熟巨核细胞核与核之间不相连呈分核状。\\
3.血清叶酸水平<6.81nmol/L(<3ng/L),红细胞叶酸<227nmol/L(<100ng/ml)可诊断为叶酸缺乏症\\
4.血清维生素B12<74~103pmol/L(<100~140pg/ml)、伴有红细胞叶酸低于正常,可诊断为维生素B12缺乏。10%~20%的维生素B12缺乏者,血清维生素B12水平是正常的,在N2O中毒、先天性TCⅡ缺乏者及伴有骨髓增生性疾患者,血清维生素B12水平可正常。此类患者应做维生素B12吸收试验,正常人排出量>7%,巨幼细胞贫血患者<7%,恶性贫血患者<5%。
/%
%%tab-检验项目及组合列表
[红细胞形态检查]\\
At line 2 changed 4 lines
[维生素B12]\\
所属分类\\
[红细胞疾病]
[血清维生素B12测定]
/%
/%
[贫血]
Version Date Modified Size Author Changes ... Change note
8 15-Oct-2013 15:27 0.688 kB 1614216108 to previous 红细胞形态检查 ==> 异常红细胞形态检查
7 29-Jul-2013 11:06 0.686 kB 1614216108 to previous | to last
6 09-Jul-2013 10:20 0.684 kB 1614216108 to previous | to last 维生素B12测定 ==> 血清维生素B12测定
5 09-Jul-2013 10:20 0.682 kB 1614216108 to previous | to last 血清维生素B12测定 ==> 维生素B12测定
4 04-Jul-2013 10:50 0.684 kB 1614216108 to previous | to last
3 05-Feb-2013 14:59 0.707 kB 1614216108 to previous | to last
2 05-Dec-2012 14:12 0.041 kB 1614216108 to previous | to last 叶酸 ==> 叶酸测定
1 05-Dec-2012 14:12 0.039 kB 1614216108 to last
« This page (revision-8) was last changed on 15-Oct-2013 15:27 by 1614216108