Wiseth R, Rossvoll O, Levang O W, Skjaerpe T, Hatle L
Section of Cardiology, University Hospital, Trondheim, Norway.
Scand J Thorac Cardiovasc Surg. 1993;27(2):87-92. doi: 10.3109/14017439309098696.
To assess the value of two-dimensional echocardiography (2D ECHO) for predicting prosthetic aortic valve size, the diameter of the aortic annulus was measured before implantation of a Medtronic-Hall valve in 24 patients and a Carpentier-Edwards supra-annular valve in 34. In the Medtronic-Hall group, the average prosthesis size was similar to the average annulus diameter, i.e. 23.2 +/- 2.1 vs 23.0 +/- 3.4 mm (NS), 95% confidence interval for the difference -1.0-0.7 mm. In the Carpentier-Edwards group the corresponding figures were 23.5 +/- 2.1 and 22.0 +/- 2.3 mm (p < 0.001), with 95% confidence interval 0.9-2.0 mm. Correlation between annulus diameter indicated by preoperative 2D ECHO and prosthesis size was stronger in the Medtronic-Hall (r = 0.88, p < 0.001) than in the Carpentier-Edwards group (r = 0.73, p < 0.001). The authors conclude that prosthetic aortic valve size may be accurately predicted by 2D ECHO, with Medtronic-Hall valve size similar to, and Carpentier-Edwards prostheses on average 1-2 mm larger than the 2D ECHO-estimated annulus diameter.
为评估二维超声心动图（2D ECHO）预测人工主动脉瓣尺寸的价值，在24例植入美敦力-霍尔瓣膜及34例植入卡彭蒂埃-爱德华兹瓣环上瓣膜的患者中，于植入前测量了主动脉瓣环直径。在美敦力-霍尔组，人工瓣膜的平均尺寸与瓣环平均直径相似，即分别为23.2±2.1与23.0±3.4毫米（无显著性差异），差异的95%可信区间为-1.0至0.7毫米。在卡彭蒂埃-爱德华兹组，相应数据分别为23.5±2.1与22.0±2.3毫米（p<0.001），95%可信区间为0.9至2.0毫米。术前二维超声心动图显示的瓣环直径与人工瓣膜尺寸之间的相关性在美敦力-霍尔组（r = 0.88，p<0.001）比卡彭蒂埃-爱德华兹组（r = 0.73，p<0.001）更强。作者得出结论，二维超声心动图可准确预测人工主动脉瓣尺寸，美敦力-霍尔瓣膜尺寸与预测值相似，而卡彭蒂埃-爱德华兹瓣膜平均比二维超声心动图估计的瓣环直径大1至2毫米。
