患者女,50岁。胸闷、气促4年,再发1d就诊。体检:心界范围扩大,心率72次/min,律齐,胸骨左缘第2~3肋间闻及粗糙的连续性机器样杂音,无紫绀。心电图示:B型心室预激。超声心动图:全心增大,以左心增大为甚。降主动脉与左肺动脉之间可见管道样结构相通,相通口肺动脉侧最大内径约11mm(图1)。左室心尖部、侧壁及下壁肌小梁增 Female patient, 50 years old. Chest tightness, shortness of breath 4 years, 1d recurrence treatment. Physical examination: heart range, heart rate 72 beats / min, law Qi, sternal left 2 to 3 intercostal smell and rough continuous machine-like noise, no cyanosis. ECG shows: B-type ventricular pre-excitation. Echocardiography: Whole-hearted to increase the left heart is even worse. The descending aorta and the left pulmonary artery can be seen between the pipe-like structure, communicating port pulmonary artery maximum diameter of about 11mm (Figure 1). Left ventricular apical, lateral and inferior wall muscle trabeculae increased