Köhler E, Haerten K, Herzer J, Loogen F, Bircks W
Z Kardiol. 1979 Jan;68(1):17-20.
The study includes two patients with obstruction of prosthetic heart valves by thrombosis. In the first patient, a thrombus attached to the ventricular side of the cage of a Smeloff-Cutter mitral prosthesis caused incomplete excursion of the ball in most cardiac cycles, which was detected by echocardiography. In the second patient a thrombosis of the atrial and ventricular side of a Lillehei-Kaster mitral prosthesis delayed opening of the disc. The initial part of the opening movement was "rounded", the excursion of the disk diminished. The cases presented indicate that in patients whose condition deteriorates after prosthetic valve replacement, echocardiography can help identify the cause. In particular, the technique makes it possible to differentiate between valvular dysfunction and muscular insufficiency of the left ventricle. Comparison with recordings obtained in the early postoperative period facilitate the detection of a malfunctioning prosthesis.
该研究包括两名人工心脏瓣膜因血栓形成而阻塞的患者。在第一名患者中，附着在斯梅洛夫-卡特二尖瓣假体笼心室侧的血栓在大多数心动周期中导致球瓣不完全偏移，这通过超声心动图检测到。在第二名患者中， Lillehei-Kaster二尖瓣假体心房和心室侧的血栓延迟了瓣膜盘的打开。打开运动的初始部分呈“圆形”，瓣膜盘的偏移减小。所呈现的病例表明，在人工瓣膜置换术后病情恶化的患者中，超声心动图有助于确定病因。特别是，该技术能够区分瓣膜功能障碍和左心室肌肉功能不全。与术后早期获得的记录进行比较有助于检测出有故障的假体。
