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Fetal viability is the ability of a human fetus to survive outside the uterus. Viability depends upon factors such as birth weight , gestational age, and the availability of advanced medical care . In low-income countries , more than 90% of extremely preterm newborns (less than 28 weeks gestational age ) die due to a lack of said medical care ...
In the developed world, overall survival is about 90% while in low-income countries survival rates are about 10%. [191] Some children will adjust well during childhood and adolescence, [180] although disability is more likely nearer the limits of viability. A large study followed children born between 22 and 25 weeks until the age of 6 years old.
Fetal viability refers to a point in fetal development at which the fetus may survive outside the womb. The lower limit of viability is approximately 5 + 3 ⁄ 4 months gestational age and is usually later. [20] There is no sharp limit of development, age, or weight at which a fetus automatically becomes viable. [21]
A baby's chances for survival increases 3–4% per day between 23 and 24 weeks of gestation and about 2–3% per day between 24 and 26 weeks of gestation. After 26 weeks the rate of survival increases at a much slower rate because survival is high already. [15]
Maternal-fetal conflict, also known as obstetric conflict, occurs when a pregnant woman’s (maternal) interests conflict with the interests of the fetus.Legal and ethical considerations involving women's rights and the rights of the fetus as a patient and future child, have become more complicated with advances in medicine and technology.
Spontaneous fetal termination after 20 weeks of gestation is known as a stillbirth. [15] The term miscarriage is sometimes used to refer to all forms of pregnancy loss and pregnancy with abortive outcomes before 20 weeks of gestation. The most common symptom of a miscarriage is vaginal bleeding, with or without pain. [1]
Viability is usually placed at about seven months (28 weeks) but may occur earlier, even at 24 weeks". When the court ruled in 1973, the then-current medical technology suggested that viability could occur as early as 24 weeks. Advances over the past three decades allow survival of some babies born at 22 weeks. [167]
The fetal origins hypothesis (differentiated from the Developmental Origins of Health and Disease hypothesis, which emphasizes environmental conditions both before and immediately after birth) proposes that the period of gestation has significant impacts on the developmental health and wellbeing outcomes for an individual ranging from infancy to adulthood.
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