采用多普勒超声心动图压力减半时间的方法测量二尖瓣瓣膜面积(MVA)已为人们广泛接受。对自身及经过修补的瓣膜面积测定均有帮助。但在某些情况下,如运动、怀孕、主支动瓣关闭不全、左心室顺应性下降或二尖瓣瓣膜成形术后急性期中测量结果不够精确。其结果并非仅由 MVA 决定。而且还受到心脏顺应性和二尖瓣压力阶差的影响。而连续方程法则被认为是一种可信、精确的测量 MVA 的方法。它以能量守恒为基础,理论上与瓣膜压力阶差及心脏顺应性无关。为验证这一说法,作者对这两种方法进行了比较。试验对象为17名左心室功能正常、无心肌梗塞症状。以二尖瓣狭窄为主,伴有低于中度血液返流的患者。年龄为30到83岁。患者都进行了心导管插入术和冠脉造影,24h 做为普勒超声心动图检查。在静息状态下和爷卧踏车运动的(心率增加20～30次/min),分别记录多 It has been widely accepted to measure mitral valve area (MVA) using Doppler echocardiographic pressure in half the time. It is helpful to measure the area of ​​the valve itself and after repair. However, in some cases, such as exercise, pregnancy, the main branch valve regurgitation, decreased left ventricular compliance or acute phase after mitral valvuloplasty in the measurement results are not accurate enough. The result is not just MVA’s decision. But also by cardiac compliance and mitral valve pressure gradient effects. The continuous equation method is considered as a credible and accurate method of measuring MVA. It is based on energy conservation and is theoretically independent of valve pressure gradient and cardiac compliance. To verify this statement, the author compares the two approaches. The subjects were 17 normal left ventricular function, no symptoms of myocardial infarction. Mitral stenosis, accompanied by less than moderate blood reflux in patients. Ages 30 to 83. Patients underwent cardiac catheterization and coronary angiography, 24h as Pule echocardiography. In resting state and roller coaster exercise (heart rate increased 20 ~ 30 times / min), respectively, and more records