1. 1978년 10월부터 1980년 8월까지 고위험도군 97예에 대하여 143회의 CST를 시행하였다. 2. CST를 시행한 97예의 적응증은 과숙아가 46예로 제일 높은 분포를 보였으며 그 외 임신 성 고혈압 (24예) 조기파막(10예), 양수양막염 등의 순이었다. 3. CST시행 당시의 평균 임신주수는 39.9주(33-47주)이였으며, 36주 미만은 13예(13.4%), 과 숙임신아 46예로 47.4%를 차지하였다. 4. 검사결과의 분포는 음성 73예(115회), 양성 14예(16회) 및 의양성은 10예(12회)이었다. 5. CST음성 73예의 신생아 Apgar score는 7이상인 경우 1분에서 68예(93.1%) 5분에서 72예 (98.6%)를 보여 위험인자에도 불구하고 좋은 Apgar score를 보였다.

The contraction stress test (CST) is widely used in the management of highrisk pregnancies. Appearance of a repetitive late deceleration following uterine contractions is regarded as an indicator of fetal compromise from impaired uteroplacental respiratory funcions. A restrospecitve study was made on 143 contraction stress test and fetal outcome, which were perfomed on 97 pregnancies from Oct. 1, 1978 to Sep. 30, 1980. The results were as follows; 1. Indications of CST were 46 postmaturities, 24 hypertensive pregnancy, 10 premature rupture of membrane with spontaneous contraction etc. 2. Mean gestational week at the time of initial test was 39.9 week with the range of 33 to 47 week. 3. Number of cases under 36 weeks of pregnancy was 13(13.4%) while that of postdate over 42 weeks was 46(41.4%) 4. Distribution of the interpretation showed 115 negative in 73cases, 16 positive in 14 cases and 12 suspicious in 10 cases 5. Inspite of the various risk factors, newborn of the 73 cases with negative CST had normal Apgar score; 68(93.1%), and 72(95.6%) at 1 and 5 minute respectively.