ULTRASONOGRAPHIC STUDIES ON PLACENTOGRAPHY AND ITS CLINICAL EVALUATION

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In order to study the clinical significance of placental localization, the junction of the mother and fetus, we have performed ultrasonographic examination after 37 weeks of gestation and made studies using various clinical parameters in vaginal delivery 213 cases and cesarean section 72 cases (include 34 cases of repeated cesarean section) for a total of 285 cases, the results of which are as follows. 1) The center of placental site in utero was confirmed to lie mainly in the right-anterior (Group 1) and left-anterior (Group 2) of the anterior wall of the corpus uteri and right-posterior (Group 3) and left-posterior (Group 4) of the upper segment of corpus uteri on the posterior uterine wall. The incidence stood at 29.1 per cent in Group 1, 24.9 per cent in Group 2, 21.1 per cent in Group 3, 15.5 per cent in Group 4 and 9.40 per cent in others. 2) Referring to the relationship between the placental localization and gestation, there was a tendency for the duration of gestation to be lengthened from the anterior to left-anterior, left side and to be shortened from the posterior to right side on the transverse scan. 3) As regards the weight of new born, it was the largest in the Group 4, getting smaller in Group 3, 1 and 2 in this order. While the mean weight for the anterior wall localization (Groups 1 and 2) was 3312g, that for the posterior wall localization (Groups 3 and 4) was 3410g, the difference being as much as 100g. Besides, studied were made on age, frequency of pregnancy, frequency of labor and Apgar score. As a result, it was suggested that the location of placenta is of great significance throughout gestation and labor.
社団法人日本産科婦人科学会の論文
1978-04-01

ULTRASONOGRAPHIC STUDIES ON PLACENTOGRAPHY AND ITS CLINICAL EVALUATION

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