Smallhorn J F, Sutherland G R, Anderson R H, Macartney F J
Br Heart J. 1982 Oct;48(4):331-41. doi: 10.1136/hrt.48.4.331.
Ninety two patients with both atrioventricular valves attached to the atrial septum, roofing a perimembranous inlet ventricular septal defect, were assessed by cross-sectional echocardiography. In the group, 42 had an isolated perimembranous inlet ventricular septal defect, 31 had atrioventricular discordance, nine an atrioventricular septal defect with intact interatrial septum, and 10 a straddling atrioventricular valve. In all but those with an atrioventricular septal defect the left atrioventricular valve had the appearance of a morphologically mitral valve. In the former lesion the atrioventricular junction was "sprung" and a cleft between the anterior and posterior bridging leaflets was identified in all. A straddling valve was identified by tensor apparatus from one atrioventricular valve in both ventricular chambers. Atrioventricular discordance was diagnosed by identifying the systemic and pulmonary venous atria and then assessing the morphology of the draining atrioventricular valves. Thus, with cross-sectional echocardiography, the constellation of abnormalities that give rise to lack of offsetting of the atrioventricular valves can be reliably identified.
采用横断面超声心动图对92例房室瓣附着于房间隔、覆盖膜周部流入道室间隔缺损的患者进行了评估。该组中，42例为单纯膜周部流入道室间隔缺损，31例为房室不一致，9例为房间隔完整的房室间隔缺损，10例为跨骑式房室瓣。除房室间隔缺损患者外，所有患者的左房室瓣在形态上均类似二尖瓣。在前者病变中，房室连接部“松弛”，所有患者均在前、后桥瓣叶之间发现裂隙。通过张量装置在两个心室腔中识别出一个房室瓣的跨骑瓣。通过识别体循环和肺静脉心房，然后评估引流房室瓣的形态来诊断房室不一致。因此，通过横断面超声心动图，可以可靠地识别导致房室瓣无偏移的一系列异常情况。
