Temesvari A, Mohl W, Kupilik N
Hungarian Institute of Cardiology, Budapest, Hungary.
J Am Soc Echocardiogr. 1997 Mar;10(2):155-8. doi: 10.1016/s0894-7317(97)70088-9.
To assess normal prosthetic mitral valve function, multiplane transesophageal Doppler echocardiographic studies were performed on 22 patients with Monostrut tilting disk valves. Mean follow-up after implantation was 63 +/- 12 months. Two holosystolic red low-velocity regurgitant jets were detected in all but one case. The length of these jets ranged from 0.8 to 6.9 cm and the area ranged from 0.5 to 10.1 cm2 in various planes. The origin of the jets was inside the rings of the prosthetic valves and started with a mosaic spot of 2 mm maximum diameter. In this mosaic spot, jet velocity by the high pulse-repetition frequency mode measured greater than 4 m/sec. Thin, high-velocity regurgitant jets originating outside the sewing ring were present in three cases. In one case we found a high-velocity turbulent jet originating outside the ring corresponding to a paravalvular regurgitation of moderate degree. The low-velocity jets were obscured in the patient with moderate paravalvular leak but not in patients with trivial paravalvular leaks.
为评估正常人工二尖瓣功能，对22例植入Monostrut倾斜盘式瓣膜的患者进行了多平面经食管多普勒超声心动图研究。植入后的平均随访时间为63±12个月。除1例患者外，其余所有患者均检测到两个全收缩期红色低速反流束。这些反流束的长度在不同平面上为0.8至6.9 cm，面积为0.5至10.1 cm²。反流束起源于人工瓣膜环内，起始于最大直径为2 mm的镶嵌斑。在这个镶嵌斑中，通过高脉冲重复频率模式测量的射流速度大于4 m/秒。3例患者存在起源于缝合环外的细、高速反流束。在1例患者中，我们发现起源于环外的高速湍流束，对应于中度瓣周反流。在中度瓣周漏的患者中，低速反流束被掩盖，但在轻度瓣周漏的患者中则未被掩盖。
