Shiu M F, Crowther A, Jenkins B S, Webb-Peploe M M
Br Heart J. 1979 Feb;41(2):139-46. doi: 10.1136/hrt.41.2.139.
M-mode echocardiography was performed in 54 patients 1 month to 3 years after mitral valvotomy for dominant mitral stenosis. The mitral valve closure index (MVCI), an index previously shown to correlate well with the calculated mitral valve area, was used to diagnose residual mitral stenosis. Using the equation MVCI = 33 MVC--12, 12 patients (22%) were deemed to have mild, 4 (7%) moderate, and 2 (4%) severe residual stenosis. Repeat cardiac catheterisation confirmed the diagnosis in 7 patients. The postoperative mitral valve closure index correlated significantly with patients' subjective symptoms and objective exercise indices. It was higher in patients in whom the posterior mitral leaflet movement became normal after valvotomy, and was lower in patients in whom the anterior mitral leaflet excursions below 14 mm before operation. The mitral valve closure index is a sensitive index for diagnosing residual mitral stenosis after valvotomy.
对54例因单纯二尖瓣狭窄行二尖瓣切开术1个月至3年的患者进行了M型超声心动图检查。二尖瓣关闭指数（MVCI）是一种先前已证明与计算出的二尖瓣面积相关性良好的指标，用于诊断残余二尖瓣狭窄。使用公式MVCI = 33MVC - 12，12例患者（22%）被认为有轻度残余狭窄，4例（7%）为中度，2例（4%）为重度。7例患者经重复心导管检查确诊。术后二尖瓣关闭指数与患者的主观症状和客观运动指标显著相关。在二尖瓣切开术后二尖瓣后叶运动恢复正常的患者中该指数较高，而在术前二尖瓣前叶活动度低于14mm的患者中该指数较低。二尖瓣关闭指数是诊断二尖瓣切开术后残余二尖瓣狭窄的敏感指标。
