Titlebook: Spontaneous Abortion; E. S. E. Hafez (Executive Director) Book 1984 MTP Press Limited 1984 Yoni.abortion.embryo.endocrinology.endometriosi

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Early embryonic loss: physiology an appropriate physiological term due to difficulty in the clinical evaluation of any spontaneous embryonic loss which may occur before implantation of the blastocyst (Figure 7.1). Such conceptus has no apparent effect on the length of the subsequent menstrual cycle. Three embryonic developmental s

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Repeated abortions and chromosome analysisryonic losses occurred even prior to clinically recognized pregnancies (Hertig and Rock, 1949). The principal etiological factor in spontaneous abortion was an intrinsic abnormality in the fertilized ovum. There have been numerous reports of abnormalities which cause fetal wastage (Carr, 1970; Boué

有惡意

Chromosome mutations and fetal wastageric and structural chromosome aberrations and in polyploid (mostly triploid and tetraploid) embryos (Boué ..,1975; Kajii .., 1973). About 50% of all spontaneous abortions are caused by such a chromosomal abnormality (Byrd .., 1977; Breuker .., 1978; Tsenghi ..,1976; Kim .., 1975; Turleau .., 1979),

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Endometriosis and spontaneous abortion recognized as a cause of spontaneous abortion (Petersohn, 1970; Jones and Jones, 1971; Rock .., 1981; Naples .., 1981; Olive .., 1982). This has important therapeutic implications; treatment of endometriosis in the infertile couple should correct both problems — the inability to conceive and the fe

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