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超声心动图

ID: ANW10009chis
医学动画文字记录:超声心动图是一种常用的检查方法,它利用声波绘制出心脏的形状和大小,从而让医生了解心脏泵血的状况,并可探查心脏瓣膜和心室的异常。在做经胸超声心动图时,超声医师会在你的胸部涂抹冷凝胶(偶合剂),然后在凝胶上稳稳地移动换能器,将无痛的声波传送到心脏。声波从心脏反射回来,并回波到换能器。声波转换成在屏幕上显示的心脏肌肉、心室和瓣膜的动态影像。多普勒超声心动图可记录血细胞回声。血液流动的速度和方向表明血液在心脏内部流动的情况。负荷超声心动图可以评估运动前后,或者使用模拟运动的药物后的心脏影像。比较运动前后的回声结果,可以提供给医生某些心脏疾病的信息,如只会在运动时发生的冠状动脉性心脏病。经食管超声心动图检查需在麻醉状态下进行,换能器缓缓地经过喉部向下将声波传送入体内。该检查更加靠近心脏,可对心脏进行更详尽的评估。

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