1. 입원시 태아심박동 검사상 reactive했던 150례중 음진동자극 검사상 type I을 보인 6예와 type III를 보인 2례, 총 8예(5.33%)에서 태아가사 상태를 보인데 비해 equivocal or ominous 했던 50례중에선 acoustic stimulation test 상 type I을 보인 2예, type II를 보인 5례, type III를 보인 5례, 총 12례(24%)에서 태아가사 상태를 보였다. Reactive한 집단보다는 equivocal or ominous 한 집단에서 태아가사상태의 빈도가 높았다. 2. 음진동 자극 검사상 type 1을 보인 17례중 8례(4.67%)이 태아가사상태를 보인데 비해 type II or III를 보인 29례중 12례(41.37%)에서 태아가사상태를 보였다. type I 보다 type II or type III로 될 수록 유의하게 높음을 알수 있었다 (P<0.01). 3. 따라서 입원시 태아 심박동검사와 음진동자극검사는 상호 보완적으로 위음성률을 줄여 주고 입원시 태아 심박동검사에 의한 태아 건강상태보다는 음진동자극에 의한 정보가 더 중 요함을 보여준다.

Fetal heart rate recation to the fetal acoustic stimulation test were investigated in 200 cases in labor. All had cephalic presentation and were screened with a 15-minuets fetal heart rate recording (admission cardiotocography test ) before the sound stimulation. Three difference type of response were observed on acoustic stimulation test 1. Type I, an accelerative response : type II, no response or prolonged deceleration, A type I response was recorded in 96% of the women after a reactive admission test result, in 79.4% after an equivocal admission test result, and in 19% after an ominous admission test result. Fetal distress in labor occurred in these three groups in 5.3%, 17.3% and 33.3% of cases, respectively. The risk for fetal distress was high after an equivocal or ominous admission test and a type II or type III on the fetal acoustic stimulation test (43.5%). The fetal acoustic stimulation test might be of value in labor and give additional information about fetal well-being in patients previously screened by the admission test.