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空腹采血不是饥饿采血

2017-01-03 佚名 检验医学

空腹血糖可反映胰岛功能,一般代表基础胰岛素的分泌功能,是临床上常用的一个指标。但在日常生活中,有不少患者对“空腹”有诸多误解,有的认为空腹就是要饿肚子,饿得时间越长指标越准,也有的患者害怕指标会高,在抽血的前一天晚上不吃或少吃,或拖延到第二天上午10点钟以后才去抽血。其实,空腹并不是要饿肚子,人的机体有强大的自我调节功能,当身体处在饥饿状态时,体内各项机能指标都会发生变化,这样采集到的血样标本就会

空腹血糖可反映胰岛功能,一般代表基础胰岛素的分泌功能,是临床上常用的一个指标。

但在日常生活中,有不少患者对“空腹”有诸多误解,有的认为空腹就是要饿肚子,饿得时间越长指标越准,也有的患者害怕指标会高,在抽血的前一天晚上不吃或少吃,或拖延到第二天上午10点钟以后才去抽血。

其实,空腹并不是要饿肚子,人的机体有强大的自我调节功能,当身体处在饥饿状态时,体内各项机能指标都会发生变化,这样采集到的血样标本就会失真,从数字上看结果可能“正常”,但背后可能掩盖患者真实的病情。

大量的临床实践证明,糖尿病患者空腹时间太长,血糖化验结果会出现两种情况:

一是低于实际指标,容易被误认为血糖控制得很好;

二是有些糖尿病患者自身血糖调节极其敏感,饥饿时间一长,会立即调动体内糖元以供急需,导致血糖水平反而比平时高出许多。

这两种假象都会影响医生做出正确的诊断而误诊误治。更值得注意的是饿得时间太长,有的糖尿病患者会出现低血糖甚至昏厥而危及生命。

空腹血糖检查注意事项:

化验空腹血糖的时间最好在餐后8~12个小时之间,抽血的前一天晚上,应保持平时的生活习惯正常饮食,饭菜宜清淡,不要喝酒,饭后不喝咖啡、浓茶,10点钟之后不要进食,并保证充足睡眠。

测空腹血糖最好在清晨6:00~8:00取血,采血前不用降糖药、不吃早餐、不运动。如果空腹抽血的时间太晚,所测的血糖值很难真实反映患者的治疗效果,其结果可能偏高或偏低。

有些患者主要表现餐后血糖升高,而空腹血糖正常,因此需测餐后血糖才能真正了解病情。糖尿病的血糖控制是全时间的,即不但空腹血糖要达标,而且餐后血糖亦应降至一定水平。


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    2017-01-17 1e1ccaf9m08(暂无匿称)

    还有很多人以为啥检查都要空腹

    0

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  4. [GetPortalCommentsPageByObjectIdResponse(id=170964, encodeId=acf91e096433, content=还有很多人以为啥检查都要空腹, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=32262001953, createdName=1e1ccaf9m08(暂无匿称), createdTime=Tue Jan 17 18:20:28 CST 2017, time=2017-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1362034, encodeId=5a301362034f8, content=<a href='/topic/show?id=b3d195659ce' target=_blank style='color:#2F92EE;'>#采血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=95659, encryptionId=b3d195659ce, topicName=采血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6c3a189, createdName=longqijun248, createdTime=Thu Jan 05 05:08:00 CST 2017, time=2017-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1454736, encodeId=12a41454e3666, content=<a href='/topic/show?id=d370101185d7' target=_blank style='color:#2F92EE;'>#饥饿#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101185, encryptionId=d370101185d7, topicName=饥饿)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5c9a5593064, createdName=guojianrong, createdTime=Thu Jan 05 05:08:00 CST 2017, time=2017-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167772, encodeId=7c4316e772c6, content=空腹采血不是饥饿采血, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20151226/IMG567EB873985DE3928.jpg, createdBy=ea941622301, createdName=inter158, createdTime=Tue Jan 03 22:52:30 CST 2017, time=2017-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167757, encodeId=1ad716e757f1, content=这个讲的很透彻, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20170206/IMG589879E392F941842.jpg, createdBy=f4d469996, createdName=wangyunyb, createdTime=Tue Jan 03 21:47:37 CST 2017, time=2017-01-03, status=1, ipAttribution=)]
    2017-01-03 inter158

    空腹采血不是饥饿采血

    0

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    2017-01-03 wangyunyb

    这个讲的很透彻

    0

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