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导管消融

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ID: ANH14137chis
医学动画文字记录:根据不同的活动水平,心脏每分钟跳动60~100次。运动时可能更快,休息时可能变得更慢。正常的心率和节律可以确保富氧血液输送到身体的所有器官,如大脑和肺。心脏中的一组细胞叫做心脏传导系统,它利用电脉冲来控制每次心跳的速度和节奏。当心脏传导系统出现问题时,就会出现不正常的心率或节律,称为心律失常。心动过速是心跳过快的一种心律失常。纤维性颤动是一种心律失常,心跳不规律,可能太快。对于某些类型的心律失常,导管消融手术可能是必要的,以阻止心脏组织损伤引起的心律失常。在用针麻醉腹股沟的一小块区域后,医生会将一根叫做导管鞘的短空心管插入股静脉中。接下来,通过导管鞘插入一根长而灵活的管子,称为导管。医生将引导导管通过一根称为下腔静脉的血管进入心脏。监测导管的位置和进展。当导管到达心脏,医生将它引导到引起心律失常的区域。医生将使用病人心脏电活动的3D图来发现问题区域。导管的尖端会发出热能量或冷能量来消融该区域的组织。消融使治疗区域停止工作。对于房性心律失常,医生会消融引起心律失常的心房组织。如果受影响的组织是小的,明确的区域,这个过程被称为局灶消融。或者,如果受影响的组织面积更大,节律紊乱更复杂,医生可能会进行消融重塑手术。这两种消融术都能恢复正常的电脉冲,防止心律失常的发生。如果心律失常的原因是在心室,医生可以做局灶性消融或消融重建来治疗更复杂的心室心律失常。

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