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钡灌肠

ID: ANH00006chis
医学动画文字记录:钡灌肠检查或下消化道造影是一种 X 线检查方法,用于显示大肠或结肠和直肠的内部解剖结构。消化道由口腔、食管、胃、小肠、结肠和直肠组成。食物按此顺序通过消化道。结肠的主要功能是吸收水分到体内,将液体废物转变为固体废物(粪便),并将粪便储存起来,直到积累足够的粪便通过排便从肛门排出。结肠可能会发生病变,如结肠癌、息肉、憩室(结肠肠壁向外凸出)、溃疡或狭窄。如果你出现不明原因的便血、腹痛或排便习惯改变,医生可能会建议你进行钡灌肠检查。检查前,你需要躺在 X 线台上。医生将一根润滑过的管子小心地插入你的直肠。管子上连接装有钡剂的袋子,钡剂可注入结肠。当足量的钡剂注入结肠后,要求在 X 线检查的整个过程中尽量不要排出任何钡剂。传送钡剂的管子上连接有一个小气囊,气囊膨胀可以防止钡剂在检查期间漏出。在拍摄 X 线光片时,你需要左右翻身或站立。这可以让钡剂流到不同的区域,以便整个结肠能够拍摄完全。在拍摄了多张X 光照片后,你可以用便盆或到浴室,尽可能多地将钡剂排出。将大部分钡剂排出后,会再拍几张 X 线光片,因为少量剩余的钡剂可以清楚地显示结肠的轮廓。做完检查后就可以回家了。多数情况下你能够恢复正常饮食。大多数放射科医生会告知患者在一段时间内增加液体摄入量,以确保所有钡剂都能排出。你排气可能会比平时增多,并在接下来的几次排便中看到钡剂。

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