
小儿窦性心动过速的心电图表现有哪些 有来医生
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心电图在窦性心动过速诊断方面非常重要:
1、心电图示:P波规律出现,形态正常,PR及QT间期相应缩短,有时可伴有继发性ST段轻度压低,或T波振幅降低;
2、窦性心动过速主要表现为心率改变:婴儿心率>140次/分,1-6岁心率>120次/分,6岁以上心率>100次/分;
3、运动或发热后心动过速不特别要求心电图检查;
4、诱发因素多、基础疾病多者,需检查心电图协助观察心脏其他表现。
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