Tomov I, Daskalova D, Topalov V, Tsolov S, Tŭrnovska R
Vutr Boles. 1988;27(2):34-42.
84 persons were examined: 61 patients with rheumatic mitral valve stenosis (21 men and 40 women), mean age 39.38 +/- 11.2 years and 23 healthy controls (14 men and 9 women), mean age 25.62 +/- 3.8 years. The morphologic and quantitative characteristics of the diastolic part of the pulse Doppler echocardiographic signal of mitral circulation analyzed by histogram of the time intervals show highly significant statistical differences between the patients with mitral valve stenosis and the healthy controls (100% specificity and sensitivity). The differentiation of mild and moderate from severe mitral stenosis by pulse Doppler echocardiography of mitral valve circulation, analyzed by histogram of the time intervals, is achieved with satisfactory precision by determination of the speed of the circulation fall in the early 1/3 of the diastole. The pulse Doppler echocardiograph performed by a transducer with 2.5 mHz frequency and the simultaneous M-echocardiography, the Doppler effect being analyzed by histogram of the time intervals, do not allow the precise determination of the degree of mitral valve stenosis.
共对84人进行了检查：61例风湿性二尖瓣狭窄患者（21名男性和40名女性），平均年龄39.38±11.2岁，以及23名健康对照者（14名男性和9名女性），平均年龄25.62±3.8岁。通过时间间隔直方图分析二尖瓣循环脉冲多普勒超声心动图信号舒张期部分的形态学和定量特征，结果显示二尖瓣狭窄患者与健康对照者之间存在高度显著的统计学差异（特异性和敏感性均为100%）。通过时间间隔直方图分析二尖瓣循环的脉冲多普勒超声心动图，通过测定舒张期前1/3时间段内循环下降速度，能够以令人满意的精度区分轻度和中度二尖瓣狭窄与重度二尖瓣狭窄。使用频率为2.5MHz的换能器进行脉冲多普勒超声心动图检查，并同时进行M型超声心动图检查，通过时间间隔直方图分析多普勒效应，无法精确确定二尖瓣狭窄的程度。
