Wearer's Garden

测血糖时为何不能挤压手指?

Time:2016-09-08 0
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核心提示:糖尿病发展到一定程度,胰岛的功能会大大降低。此时,空腹血糖已经受损,测量这项数据的意义已经不大。相反,餐后血糖的重要性就体现出来了。

  空腹血糖小于7,不代表没糖尿病一般的健康体检,大都只测空腹血糖。很多人于是想当然地认为,空腹血糖小于7,就表明没有糖尿病。而事实上,临床上的一些糖尿病患者,空腹血糖常在正常区间,餐后血糖却高得惊人。这是为什么呢?

  糖尿病发展到一定程度,胰岛的功能会大大降低。此时,空腹血糖已经受损,测量这项数据的意义已经不大。相反,餐后血糖的重要性就体现出来了。对于空腹血糖正常、餐后血糖偏高的人群来说,如果不及时采取治疗,就意味着每天至少有一半的时间都处于高血糖的危害中,一经发现,往往已出现并发症。

  此外,还有一项数据同样重要--糖化血红蛋白,它代表的是血糖和血红蛋白结合的水平,越高越危险。由于这项数据的变化需要3个月左右的反应时间,因此常被用来监测血糖控制的情况,对康复期患者具有很重要的意义。这三项数据合并成血糖检测的"金三角",单看任何一项都是不够全面的。

  测血糖时挤压手指,可致结果失准随着家用血糖仪的普及,很多糖尿病患者都养成了勤测血糖的好习惯。然而,测得勤,不一定就测得准。"有的老人来医院,一测血糖就直叫唤'我家里测没有那么高啊!是不是机器不准啊?'一聊细节才发现,不是家里的仪器不好,而是没用对。举个例子,很多人在测血糖时都有挤压手指的习惯。看似没什么。但挤压手指,使血量充分的同时,也带出了组织液。这样一来,血液被稀释,测出来的血糖值自然也就低了。"庄祥康告诉记者,如果发现出血量不够,可在扎针后,轻轻推压手指两侧血管至前端的三分之一处,让血液慢慢溢出。


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