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Embryo loss

Early pregnancy loss during the embryo's development

Embryo loss (also known as embryo death) is the death of an embryo at any stage of its development which in humans, is between the second through eighth week after fertilization. Failed development of an embryo often results in the disintegration and assimilation of its tissue in the uterus, known as embryo resorption. Loss during the stages of prenatal development after organogenesis of the fetus generally results in the similar process of fetal resorption or miscarriage. Embryo loss often happens without an awareness of pregnancy, and an estimated 40 to 60% of all embryos do not survive.

01Moral status

There is considerable debate about the moral status of human embryos. These debates are important in relation to abortion and IVF. Some argue that fetuses have the same moral status as infants, children, and adults. However, critics claim that this view is morally inconsistent due to the frequency of embryo loss/miscarriage/spontaneous abortion in general population. Some say that the debate ignores an important biological feature of human embryos, the fact that most human embryos die, before even doctors know they exist.

02Fertility clinics

Within fertility clinics embryo loss is associated with a high number of implanted embryos. The keeping of embryos in tanks can also increase risks of loss in instances where technical malfunctions can occur.

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Sources and credits

This article is adapted from the Wikipedia article Embryo loss, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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Related topics

Perinatal mortality

Perinatal mortality is the death of a fetus or neonate and is the basis for calculation of the perinatal mortality rate. Perinatal means "relating to the period starting a few weeks before birth and including the birth and a few weeks after birth." Variations in the precise definition of the perinatal mortality exist, specifically concerning the issue of inclusion or exclusion of early fetal and late neonatal fatalities.

Reproductive loss

Reproductive loss, sometimes reproductive disappointment or reproductive grief, describes a potential emotional response to unsuccessful attempts at human reproduction or family-building. These experienced losses may include involuntary childlessness generally, pregnancy loss from all causes, perinatal death, stillbirth, infecundity and infertility from all causes (including voluntary, coerced or accidental sterilization, and post-menopausal infertility), failed attempts to conceive, failed fertility treatments, failed gestational surrogacy procedures, and losses related to all dimensions of the adoption process.

Miscarriage

Miscarriage, also known in medical terms as a spontaneous abortion, is an end to pregnancy resulting in the loss and expulsion of an embryo or fetus from the womb before it can survive independently. Miscarriage before six weeks of gestation is defined as biochemical loss by ESHRE. Once ultrasound or histological evidence shows that a pregnancy has existed, the term used is clinical miscarriage, which can be "early" or "late" (between 12 and 21 weeks).