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胃底折叠术

ID: ANH00011chis
医学动画文字记录:医生可能会做胃底折叠术来治疗胃食管反流病,或修复裂孔疝。消化始于口腔。当牙齿把食物咬成小块时,唾液会释放消化酶。当食物被吞下时,它会进入食管,这是一根长长的肌肉管,将食物从口腔送到胃里进一步消化。食管的收缩称为蠕动,将食物推下食管。在食管底部,食物通过称为食管下括约肌(LES)的肌肉瓣膜进入胃。胃部分泌的消化液是高度酸性的。当胃收缩将食物送至肠道时,食管下括约肌会紧紧闭合,以防止这些酸性汁液返回食管,从而造成损害。一块称为横膈的呼吸肌将胸部和腹部分开。食管要穿过横膈的裂孔环才能到达胃。如果你患有胃食管反流病(GERD),食管下括约肌不能正常闭合,导致酸性胃内容物反流到食管。如果胃食管反流病不治疗,会导致各种食管问题,包括:溃疡;出血;狭窄或狭小;巴雷特食管,食管内的肠道型细胞异常生长,可导致癌症。如果你有裂孔疝,胃的一部分将通过膈肌的开口凸出到胸腔。裂孔疝可影响食管下括约肌,并增加胃食管反流病的风险和严重程度。手术开始前,在手臂上建立静脉通路以提供液体和药物。可能会在膀胱内放置一根导尿管来排尿。手术采用全身麻醉,使你在整个手术过程中处于睡眠状态。一旦你入睡,会经口腔进行气管插管,以帮助你在术中呼吸。可采用两种方法中的一种来进行胃底折叠术。在传统的开放式手术中,医生首先要在腹部切开一个8英寸(约20厘米)的切口,暴露出胃和食管下部。在将胃与附近的结构分离后,医生会将胃底或胃上部包裹在食管下部,并将其缝合到位。这样的包裹作为一个带子,收紧和加强食管下括约肌。在腹腔镜手术中,医生首先会在你的腹部开五个小的锁孔,每个约半英寸长(约1.3厘米)。医生将通过一个切口插入腹腔镜,这是一根长而细的管子,配有光源和摄像机。摄像机将图像发送到视频屏幕上供医生查看。向腹部注入气体,使医生能更清楚地看到你的内脏。通过其他切口,医生将使用器械将胃底从周围的环境中分离出来,将它包裹在食管下部,并将其缝合到位。如果你有裂孔疝,医生会将胃疝的部分拉回腹部的正常位置,并收紧横膈上的裂孔环以防止再次发生疝。这可以通过开放手术或腹腔镜手术来完成。手术结束后,腹部切口要用缝线或缝合钉缝合。当你从手术中醒来时,会发现一根穿过鼻腔进入胃的小管子。这根管子帮助排除手术部位的液体和气体,通常在2天内能够排除干净。医生会鼓励你在手术当天就起床活动。

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