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Review article

Review article Introduction Recent advances in perinatal technology increased tremendously our understanding of early human development. This, in turn, has led investigators to ask numerous searching questions on both maternal and fetal placental hemodynamics. The early beginning of embryonic life is a gestational period of important hemodynamic changes, mainly characterized by establishment of a continuous maternal blood flow in the intervillous space. In this development process, the maternal vascular bed and spiral arterioles form the basis for perfusion of the placenta. Current anatomical knowledge has largely been based upon the classical studies of earlier investigators. In many instances their theories have been confirmed by new information, but, in others, initial errors in observation or conclusion have been brought to light necessitating revision or replacement of the original concepts. Many questions are presently directed to the intervillous space, probing in particular its size and form, its source of blood supply, and the mechanism of circulation within it. In 1962, in an excellent review article [36] on circulation in the intervillous space RAMSEY wrote: "Old ideas die hard, however, even when their validity has been challenged, and it is well known that they frequently maintain their position in textbooks for some time http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Perinatal Medicine de Gruyter

Review article

Journal of Perinatal Medicine , Volume 25 (3) – Jan 1, 1997
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Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0300-5577
eISSN
1619-3997
DOI
10.1515/jpme.1997.25.3.225
Publisher site
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Abstract

Introduction Recent advances in perinatal technology increased tremendously our understanding of early human development. This, in turn, has led investigators to ask numerous searching questions on both maternal and fetal placental hemodynamics. The early beginning of embryonic life is a gestational period of important hemodynamic changes, mainly characterized by establishment of a continuous maternal blood flow in the intervillous space. In this development process, the maternal vascular bed and spiral arterioles form the basis for perfusion of the placenta. Current anatomical knowledge has largely been based upon the classical studies of earlier investigators. In many instances their theories have been confirmed by new information, but, in others, initial errors in observation or conclusion have been brought to light necessitating revision or replacement of the original concepts. Many questions are presently directed to the intervillous space, probing in particular its size and form, its source of blood supply, and the mechanism of circulation within it. In 1962, in an excellent review article [36] on circulation in the intervillous space RAMSEY wrote: "Old ideas die hard, however, even when their validity has been challenged, and it is well known that they frequently maintain their position in textbooks for some time

Journal

Journal of Perinatal Medicine – de Gruyter

Published: Jan 1, 1997

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