Gibson D G, Traill T A
Herz. 1979 Apr;4(2):220-2.
M-Mode echocardiography in patients with univentricular heart allows the number and relations of the AV valves to be established. The absence of a posterior septum can be documented with some certainty and in many cases a stradding AV valve suspected. In addition, reduced amplitude of diastolic closure velocity is very suggestive of valve atresia or dysplasia. This information is of practical significance if corrective surgery is planned.
单心室心脏患者的M型超声心动图可确定房室瓣的数量及关系。能较为肯定地记录到后间隔缺如，且在许多情况下可怀疑存在跨立型房室瓣。此外，舒张期关闭速度幅度降低很提示瓣膜闭锁或发育异常。如果计划进行矫正手术，该信息具有实际意义。
