[患者]男,28岁。因劳累后心悸、胸闷1年,有侧胸背部疼痛半年入院。自发病以来无咳嗽、晕厥及阵发性呼吸困难等症状,能胜任一般劳动。体检:T36℃,P62次/min,血压12/9kPa。一般状况佳,颜面、口唇无发绀,无颈静脉怒张。气管居中,胸廓对称,双肺呼吸音清晰。心界无扩大,心率62次/min,心律规整,心尖部可闻及第四心音。胸骨左缘Ⅱ至Ⅳ肋间可闻及Ⅲ级以上全收缩期喷射性杂音,肺动脉瓣区第二音亢进且呈宽分裂。 [Patient] Male, 28 years old. Due to exertion after heart palpitations, chest tightness, 1 year, chest pain back six months admitted. Since the onset of cough, syncope and paroxysmal dyspnea and other symptoms, capable of general labor. Physical examination: T36 ℃, P62 times / min, blood pressure 12 / 9kPa. General good condition, face, lips cyanosis, no jugular vein engorgement. Tracheal center, symmetrical thoracic, lung breath sounds clear. Heart without expansion, heart rate 62 beats / min, regular heart rhythm, the apex can be heard and the fourth heart sound. The left border of the sternum Ⅱ to Ⅳ intercostal can be heard above grade Ⅲ and more systolic ejection murmur, pulmonary valve area of ​​the second tone hyperthyroidism was wide split.