Echographic changes with placental ageing
β Scribed by F. Winsberg
- Book ID
- 102330507
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 369 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0091-2751
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β¦ Synopsis
Abstract
After 36 weeks gestation the placenta has a distinct echographic appearance which is characterized by rounded transonic areas measuring 1.5 to 4.5 cm. in diameter. Anatomic and histologic study of seven placentas with this echographic appearance has snown no abnormalities or characteristic findings. The recognition of the mature placenta is of clinical use in the determination of dysmaturity and growth retardation, where a single fetal head measurement may be misleading. The changes in the internal consistency of the placenta are most easily identified with a realβtime, water bath, linear scanner (Siemens Vidoson) but may also be seen with a compound contact scanner if nonβstorage recording is employed.
π SIMILAR VOLUMES
The secretion of placental isoferritin (PLF) during pregnancy could be responsible for the diminished immunoreaction of maternal lymphocytes against the embryo. In this study, serum levels of PLF in 335 pregnant women were correlated with birth weight, percentile of birth weight, gestational age, an