由于胸椎缺乏生理性后弯(直背),胸廓的前后径变窄,心脏夹在胸椎和胸骨中间而受压。并向左侧移位和旋转,因而产生心脏杂音,心电图和胸部X线等改变者,称为直背综合征。临床上常与先心病,特别易与房间隔缺损、肺动脉瓣狭窄、特发性肺动脉扩张等相混淆,所以有将它称为“伪心脏病”者。误为器质性心脏病则可造成处理上的错误。本症一般无症状,个别有轻度的劳累后心悸气 Due to the lack of physiological posterior thoracic curvature (straight back), narrow anteroposterior diameter of the thorax, the heart caught in the middle of the thoracic and sternal compression. And to the left shift and rotation, resulting in heart murmur, electrocardiogram and chest X-ray and other changes, known as straight back syndrome. Clinically often congenital heart disease, particularly vulnerable and atrial septal defect, pulmonary valve stenosis, idiopathic pulmonary artery dilation and other confusing, so it will be called “pseudo heart disease” who. Mistaken for organic heart disease can cause processing errors. The symptoms are generally asymptomatic, some have mild fatigue after heart palpitations gas