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 <p>下图为教学示意，不是患者原始心电图的重建，也不用于自动诊断。点击“播放动画”后，扫描线会沿时间轴移动；点击观察点按钮可以突出相应标注。动画用于说明“连续记录”和“节律间期”的概念，不代表真实心电设备的采样参数。</p>
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 <div class="ecg-demo-head"><div><h3>连续节律示意：窦性心律与房颤</h3><p>教学示意｜动画表示时间轴移动，不代表原始检测记录</p></div><span class="ecg-demo-badge">ECG SKETCH</span></div>
 <div class="ecg-demo-controls" role="group" aria-label="心电图动画控制"><button type="button" data-play data-active="true">暂停动画</button><button type="button" data-focus="all" data-active="true">总览</button><button type="button" data-focus="pwave">P 波 / f 波</button><button type="button" data-focus="rr">R-R 间期</button><button type="button" data-focus="qrs">QRS 波群</button></div>