声音振动刺激试验在临床上的应用

CLINICAL EVALUATION OF ANTEPARTUM VIBRATORY ACOUSTIC STIMULATION TEST

应用声振仪对１９９２年２个月～１９９３年６个月单胎３６～４３周妊娠孕妇１５０例进行了声音振动刺激试验（ＶＡＳ－Ｔ）并与无负荷试验（ＮＳＴ）对照。对此结果ＶＡＳ－Ｔ（＋）１４６例，（－）４例，ＮＳＴ反应型９６例，无反应型５４例。ＮＳＴ无反应型预测价值８％，假阴性率９２％。ＮＳＴ无反应型经声音刺激后５０例成ＶＡＳ－Ｔ（＋）。ＶＡＳ－Ｔ预测价值９９．３％。ＮＳＴ有效率６６％，ＶＡＳ－Ｔ有效率９９％。ＮＳＴ至少需做２０ｍｉｎ，ＶＡＳ－Ｔ９５％在３ｍｉｎ内达到标准，最长１５ｍｉｎ。为避免ＮＳＴ假无反应型，应进行ＶＡＳ－Ｔ。

From February, 1992 to June, 1993 a comparative study between antepartum vibratory acoustic stimulation test(VAS-T) and nonstress test(NST) was done in monocyesis women with 36th weeks.Of the 150 cases, 146 of VAS-T were positive and 4 negative. 96 of NST were positive and 54 NST were negative. The predictive value of negative NST was 8%, with 92% false negative rate. 54 of negatiive NST passed vibratory stimulation 50 of them changed to VAS-T positive. The predictive value of VAS-T was 99.3%, The efective rate of NST was 66%. The efective rate of VAS-T was 99%(P<0.01). A time for doing NST need for 20 minutes at least. A time of 95% doing VAS-T. achieve standad in 3 minutes, longest time was 15 minutes. Avioiding false negative cases of NST, it should do VAS-T.