Wilcox W D, Seward J B, Hagler D J, Mair D D, Tajik A J
Mayo Clin Proc. 1980 Jul;55(7):425-33.
Clinical and M-mode echocardiographic features of discrete subaortic stenosis are indirect and nonspecific. Cardiac catheterization and angiography have invariably been necessary for substantiation of the diagnosis. Our experience with two-dimensional echocardiography in 10 patients with discrete subaortic stenosis indicates that this technique is more sensitive than angiography for the recognition and characterization of the obstruction. Although catheterization is superior in determining the severity of obstruction, two-dimensional echocardiography is at least as sensitivie in assessing ventricular hypertrophy and contractility and is a superior technique for appreciation of the morphologic spectrum of the lesion causing discrete subaortic stenosis.
孤立性主动脉瓣下狭窄的临床及M型超声心动图特征是间接且非特异性的。以往确诊往往需要进行心导管检查和血管造影。我们对10例孤立性主动脉瓣下狭窄患者进行二维超声心动图检查的经验表明，该技术在识别和描述梗阻方面比血管造影更敏感。虽然心导管检查在确定梗阻严重程度方面更具优势，但二维超声心动图在评估心室肥厚和收缩力方面至少同样敏感，并且在了解导致孤立性主动脉瓣下狭窄病变的形态学范围方面是一种更优越的技术。
