정상임신에서 태아의 모체내에서의 행동습성이 분만 후에 미치는 영향을 알아보기 위하여 기초자료로서 임신 제20주부터 41주까지의 정상 임신부 111명에 대할 태아운동의 양상을 weak momement, kicking movement, rolling movement로 나누어 매일 기록 관찰 하였으며, 비정상임신 5예에서의 태아운동 및 분만후의 결과에 대한 관찰을 하였던바 다음과 같은 결과를 얻었다. 1. weak movement 는 임신 20주에서 77.55±4.25% 이었던 것이 임신 30~31주에는 36.50±12.33%로 감소하였다가. 임신 34~35주에는 90.86±4.11%로 급적히 상승하였으며 이후 임신 40~4l주에는 66.14±5.02 %를 보였다. 2. kicking movement는 임신 20주에서 16.32±1.88%이었고 임신 30~31주에서 62.92±12.04% 이었으며, 임신 34~35주에 2.64±3.73%로 최하에 달하였다가, 임신 40~41주에 36.10±6.31%를 보였다. 3. rolling movement 는 임신 20주에 9.5±9.39%이었고. 임신 40~41주까지 서서히 감소하여 2.5±3.37% 이었다. 시 비정상임신 5예에서 , 3예는 즉시 분만을 시도하여 태아사망을 방지할 수 있었으며 2예에서는 자궁내 태아사망이 발생하였다. 이상의 결과로 보아 태아운동중 weak movement 와 kicking movement가 태아 건강상태 평가에 중요하다고 생각된다.

In high risk pregnancy with severe fetal distress, a reduction of fetal movements may take place before fetal death occurs. This decrease is accompanied by a weakening of the fetal movement. Patterns of fetal movements in 111normal and 5 abnormal pregnancies of a gestational period between the 20th and the 4lst week were evaluated. Fetal movements were classified into three types; weak, kick and rolling movements. The weekly recordings of incidence of fetal movements were evaluated by calculating the ratio percentage(mean±SD) of each type of fetal movements to the total movements. The results were as follows: 1. The weak movement started in the 20th weeks of gestation(77.6±4.5%), and gradually decreased until the 30th-31th week(36.5±2.33%) but increased up to the 34th-35th week(90.9±4. 11%), again decreasing till term(66.1±5.02%). 2. The kick movement began to increase in the 20th week of gestation (16.3±1.88%) and lasted until the 30th-31th week (62.9±12.04%) and decreased to the lowerest level(2.5±3. 73%) in the 34th-35th week but slightly increased again till term (36.1±6.31%). 3. Less prominant change was shown in the rolling movement than in the kick and slow movements although there were 2 peak levels in the 22nd-23rd (22.8±3.46%) and the 32nd-33rd week of gestation (19.0±10.55%). 4. In 5 cases of fetal distress, decrease of daily total movement counts and discrepancy in changing pattern, by the gestational week of each type of movements were significant. Considering above results, weak and kick movements are more importants are more important than rolling and decrease of fetal movement in numbers, changes of percentage of eachtype of movement are also very important for a simple and quick evaluation of the fetal well-being.