Bachenberg T C, Shub C, Hauck A J, Edwards W D
Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905.
Echocardiography. 1991 Jan;8(1):9-15. doi: 10.1111/j.1540-8175.1991.tb01399.x.
To evaluate the accuracy of M-mode echocardiography in the assessment of left ventricular mass, we compared various echocardiography-derived regression equations for left ventricular mass to postmortem left ventricular weights in 93 patients (mean age 68 +/- 11 years) who had autopsy within 30 days of technically adequate two-dimensional guided M-mode echocardiography and who had normal left ventricular shape. The left ventricle was enlarged in 36 patients (39%) and was involved by chronic ischemic disease in 48 patients (52%). Only a modest correlation was found between M-mode echocardiography and anatomical left ventricular mass (range of correlation coefficients, 0.58 to 0.67). Each echocardiographic formula demonstrated increasing deviations as left ventricular mass increased. A previously suggested correction formula lessened overestimation, but considerable data dispersion remained. Regional wall-motion abnormalities, present in 22%, did not affect the correlation. We conclude that M-mode echocardiography, performed with standard methods, does not reliably estimate anatomical left ventricular mass, especially in patients with large hearts.
为评估M型超声心动图在评估左心室质量方面的准确性，我们比较了通过超声心动图得出的多种左心室质量回归方程与93例患者（平均年龄68±11岁）尸检时左心室重量的差异。这些患者在技术上充分的二维引导M型超声心动图检查后30天内接受了尸检，且左心室形态正常。36例患者（39%）左心室增大，48例患者（52%）患有慢性缺血性疾病。M型超声心动图与解剖学左心室质量之间仅发现适度相关性（相关系数范围为0.58至0.67）。随着左心室质量增加，每个超声心动图公式显示出越来越大的偏差。先前提出的校正公式减少了高估，但仍存在相当大的数据离散。22%的患者存在节段性室壁运动异常，这并未影响相关性。我们得出结论，采用标准方法进行的M型超声心动图不能可靠地估计解剖学左心室质量，尤其是在心脏较大的患者中。
