摘要
目的:15例拟行经导管主动脉瓣置换术(TAVI)患者主动脉根部影像学与临床应用的单中心早期临床经验。方法:入选我院2011-03至2013-11拟行TAVI的主动脉瓣重度狭窄患者15例,分别进行计算机断层摄影术(CT)扫描、经胸超声心动图采集主动脉根部解剖数据,并对比主动脉瓣环测量差异。根据CT测量结果选择植入瓣膜型号,通过术后6个月随访,评估术前测量准确性。结果:15例患者术前CT测量主动脉瓣环短径(21.5±2.4)mm,主动脉瓣环长径(27.3±2.7)mm,瓣环平均内径(24.4±2.4)mm,左心室流出道长径(28.3±4.5)mm,左心室流出道平均内经(24.±3.5)mm;升主动脉内径(35.3±4.4)mm。置入A-Venus人工瓣膜26号瓣膜8例,29号瓣膜7例。CT测量主动脉瓣环内径均值大于经胸超声心动图主动脉瓣环内径均值,差异有统计学意义(P<0.001)。经6个月随访,15例患者均未出现主动脉根部破裂、阻挡冠状动脉、主动脉瓣及瓣周中量及以上反流,有4例患者因房室传导阻滞行永久起搏器置入。结论:CT及经胸超声心动图对于主动脉瓣环测量结果存在差异,CT测量可准确有效评估主动脉根部形态及毗邻,为TAVI提供有力支持。
Objective： To study the aortic root imaging and clinical application in 15 patients with transcatheter aortic valve implantation （TAVI）. Methods： A total of 15 patients with severe aortic valve stenosis received TAVI in our hospital from 2011-03 to 2013-11 were studied. The CT scan and transthoracic echocardiography were conducted to measure the aortic root anatomy and the differences of annulus size between CT and echocardiography were calculated. The prosthetic valves were selected based on CT measurement. The pre-operative accuracy of measurement was evaluated by the follow-up study at 6 months after operation. Results： The CT measured pre-operative aortic annulus short diameter was （21.5 ± 2.4） mm, long diameter was （27.3 ± 2.7） mm, the average inner diameter was （24.4 ± 2.4） mm, left ventricular out lfow （LVOF） tract long diameter was （28.3 ± 4.5） mm, the average inner diameter of LVOF was （24 ± 3.5）, ascending aorta diameter was （35.3 ± 4.4） mm. The Venus Medtech A-Valve implanted in 8 patients with #26 and in 7 patients with #29. The average inner diameter of aortic annulus measured by CT was larger than transthoracic echocardiography, P〈0.001. During 6 months follow-up period, no patients had aortic root rupture, coronary obstruction, moderate and severer aortic and peri-aortic regurgitation. There were 4 patients with atrio-ventricular block and received permanent pacemaker implantation. Conclusion： There is a difference for aortic annulus size by CT and transthoracic echocardiography measurements. CT may presisely assess the aortic root morphology and provide strong support for TAVI.
出处
《中国循环杂志》
CSCD
北大核心
2014年第9期714-717,共4页
Chinese Circulation Journal
