Niederle P, Feuereisl R, Suchan V, Michaljanic T, Sklenár J, Jezek V, Jezková J
Cor Vasa. 1986;28(6):451-7.
Duplex Doppler echocardiography with high pulse repetition frequency was used to study: group A - 7 patients with mitral stenosis (MS) during cardiac catheterization, and group B - 26 patients with MS in whom the Doppler examination was performed 24 h-3 months prior to catheterization. Using the peak flow velocity within the stenotic flow jet, the pressure drop and mitral valve area (MVA) were calculated and compared with data obtained invasively. The inter-observer variability of the two parameters was 12% and 5%, respectively. The correlation between Doppler pressure drop and invasive measurement was excellent in group A (r = 0.83), while less close in group B (r = 0.71). However, using only MVA estimates (group B), it was possible to recognize most of MS with catheterization MVA less than or equal to 1.0 cm2/m2 (sensitivity and predictive value both of 90%). Therefore, even nonsimultaneous quantitation of MS seems valuable in pre-operative patient evaluation, adding a new information to hitherto existing echocardiographic criteria.
A组为7例在心脏导管插入术期间患有二尖瓣狭窄（MS）的患者，B组为26例在导管插入术前24小时至3个月进行多普勒检查的MS患者。利用狭窄血流束内的峰值流速，计算压力阶差和二尖瓣面积（MVA），并与有创测量获得的数据进行比较。这两个参数的观察者间变异性分别为12%和5%。A组中多普勒压力阶差与有创测量之间的相关性极佳（r = 0.83），而B组中的相关性则没那么密切（r = 0.71）。然而，仅使用MVA估计值（B组），就有可能识别出大多数导管插入术MVA小于或等于1.0 cm2/m2的MS患者（敏感性和预测值均为90%）。因此，即使对MS进行非同步定量在术前患者评估中似乎也很有价值，为迄今已有的超声心动图标准增添了新信息。
