Cohen B E, Winer H E, Kronzon I
Am J Cardiol. 1979 Jul;44(1):158-61. doi: 10.1016/0002-9149(79)90265-0.
Three patients with a left superior vena cava draining into a dilated coronary sinus were studied with cardiac catheterization and echocardiography. The diagnosis was confirmed at operation in two patients. A posterior echo-free space was filled with echoes during injection of contrast medium into the left but not the right arm. This echo-free space was localized to the left atrioventricular groove. This technique established the presence of a left superior vena cava communicating with the coronary sinus and excluded pericardial effusion as the source of the posterior echo-free space.
对3例左上腔静脉汇入扩张冠状窦的患者进行了心导管检查和超声心动图检查。其中2例患者的诊断在手术中得到证实。向左侧而非右侧手臂注射造影剂时，一个无回声区被回声填充。该无回声区位于左房室沟。这项技术证实了左上腔静脉与冠状窦相通的存在，并排除了心包积液是后方无回声区的来源。
