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阵发性室上性心动过速(PSVT)大部分由折返引起,折返可发生在传导系统各部位。隐匿性房室反复性心动过速占PSVT的13～17％,仅次于结内折返性心动过速。本病可见于任何年龄,20～40岁较多见,且易复发。本例患者男、2岁,因发热呕吐伴心动过速2天住院。无发绀,咽充血,心肺查无著变,心率240次/分,律整,心各瓣膜未及杂音、肝大右肋缘下6cm,WBC21×10~9/L,S80％、L20％,诊为上感合并心动过速。除对症治疗外并用异搏停。治疗前心电图P波可见呈逆行传导,
Paroxysmal supraventricular tachycardia (PSVT) caused by the majority of reentry, reentry can occur in various parts of the conduction system. Recurrent atrioventricular tachycardia accounted for 13 to 17% of PSVT, second only to nodal reentrant tachycardia. The disease can be seen at any age, 20 to 40-year-old more common, and easy to relapse. The patient male, 2 years old, was hospitalized for fever and vomiting with tachycardia for 2 days. No cyanosis, pharyngeal congestion, no change in heart and lung check, heart rate 240 beats / min, the law, the heart of the valve without noise, right under the liver 6cm, WBC21 × 10 ~ 9 / L, S80%, L20% The diagnosis of a combination of tachycardia. In addition to symptomatic treatment and use of verapamil. P wave before treatment can be seen retrograde conduction,