Pregnancy. Prenatal assessment of the Hyrtl anastomosis and evaluation of its function: Case report
Source: Human Reproduction, Volume 14, Number 7, July 1999 , pp. 1890-1893(4)
Publisher: Oxford University Press
The presence of a communicating vessel, the Hyrtl anastomosis, between the umbilical arteries is well described in pathological studies. Using different injection techniques, it has been speculated that this vessel acts as a pressure-equalizing mechanism between the different lobes of the placenta. However, its detection during fetal life has never been reported. We report on two cases of ultrasonographic detection and Doppler assessment of the Hyrtl anastomosis during pregnancy. A pulsatile blood flow from the umbilical artery with higher resistance to that with lower resistance has been demonstrated at the level of the Hyrtl anastomosis, which was confirmed after delivery. In addition, this report supports the hypothesis that the anastomosis plays an important role in regulating the blood pressure in the placental lobes and in equalizing the blood pressure between umbilical arteries.
Document Type: Original Article
Affiliations: 1: Department of Obstetrics and Gynaecology, Kantonsspital, CH 8596 Münsterlingen, Switzerland, 2: Department of Obstetrics and Gynaecology, University of Insubria, Varese, and 3: Department of Obstetrics and Gynaecology, University of Bari, Bari, Italy
Publication date: 1999-07-01
- Human Reproduction features full-length, peer-reviewed papers reporting original research, clinical case histories, as well as opinions and debates on topical issues. Papers published cover the scientific and medical aspects of reproductive physiology and pathology, endocrinology, andrology, gonad function, gametogenesis, fertilization, embryo development, implantation, pregnancy, genetics, genetic diagnosis, oncology, infectious disease, surgery, contraception, infertility treatment, psychology, ethics and social issues. The highest scientific and editorial standard is maintained throughout the journal along with a rapid rate of publication.