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患者男性,21岁,主诉心悸1年。曾2次住院治疗诊断为病毒性心肌炎。多次心电图诊断为窦性心动过速伴Ⅰ°房室传导阻滞。心率120次/min左右,P-R间期0.54s,P波位于T波升支内。经仔细观察,病人心率并非持续过速,间歇期心率仅为55次/min左右,且P-R间期正常为0.16s。乏氏动作亦可使过速的心率骤降至55次/min左右。提示心动过速由折返引起。以后我们于心动过速
Male patient, 21 years old, complained of heart palpitations for 1 year. Had 2 hospitalized diagnosis of viral myocarditis. Multiple electrocardiographic diagnosis of sinus tachycardia with Ⅰ ° atrioventricular block. Heart rate 120 beats / min or so, P-R interval 0.54s, P wave in the ascending branch of T wave. After careful observation, the patient’s heart rate is not sustained over-speed, intermittent heart rate was only 55 beats / min, and the P-R interval was normal 0.16s. Forsythia can also make overshoot heart rate dropped to 55 beats / min or so. Tips Tachycardia caused by the turn back. After we have tachycardia