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例1 男,17岁。因阵发性心悸1年、晕厥2次入院。平素健康。体检:血压14/9kPa(106/68mmHg),神志清,口唇发绀,无颈静脉怒张,双肺呼吸音清,心界向两侧扩大。心率190次/分,律齐,心音低,无杂音,肝肋下未触及,双下肢无水肿。心电图呈左束支阻滞型室性心动过速,QRS电轴+95°。用利多卡因、硫酸镁等药物治疗,室速消失,恢复窦性心律,QRS电轴+90°,肢导低电压,V_1～V_3导联T波倒置,偶有室早,形态与室速发作时相同。X线胸片:心影向两侧扩大,心尖圆钝,右室扩大.肺无瘀血。超声心动图:左房内径20mm,左室内径40mm,
Example 1 male, 17 years old. 1 year due to paroxysmal palpitations, syncope 2 admitted. Usually healthy. Physical examination: blood pressure 14 / 9kPa (106/68 mmHg), clear mind, lips cyanosis, no jugular vein engorgement, lung breath sounds clear, heart to expand on both sides. Heart rate 190 beats / min, law Qi, low heart sound, no noise, liver ribs not touched, no lower extremity edema. ECG showed left bundle branch block ventricular tachycardia, QRS axis + 95 °. With lidocaine, magnesium sulfate and other drugs, ventricular tachycardia disappeared, recovery of sinus rhythm, QRS axis + 90 °, low limb lead voltage, V_1 ~ V_3 lead T wave inversion, occasional premature ventricular morphology and ventricular tachycardia The same attack. X-ray: heart shadow to both sides of the expansion, apex obtuse, the right ventricle to expand lung no blood stasis. Echocardiography: Left atrial diameter 20mm, left ventricular diameter 40mm,