Information about Postmature Birth
A postmature birth occurs when a human pregnancy lasts longer than three weeks past the expected delivery date. In such a birth the placenta can begin to fail , causing declining delivery of oxygen and nutrients to the fetus. This can result in the death of the fetus if delivery is not induced. Postmature newborns are typically thin and underweight, with slender limbs, dry wrinkled skin and longer hair and nails.[1] The first few days after delivery are the most critical. Infants that live beyond that period have a high survival rate.
References
1. ^ Clifford SH. Postmaturity with placental dysfunction. Clinical syndromes and pathologic findings. J Pediatr 1954;44:1-13
Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the body of a female mammal such as a human. In a pregnancy, there can be multiple gestations (for example, in the case of twins or triplets).
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The placenta is an ephemeral (temporary) organ present in placental vertebrates, such as some mammals and sharks during gestation (pregnancy).
The placenta develops from the same sperm and egg cells that form the fetus, and functions as a fetomaternal organ with two
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The placenta develops from the same sperm and egg cells that form the fetus, and functions as a fetomaternal organ with two
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2, −1
(neutral oxide)
Electronegativity 3.44 (Pauling scale)
Ionization energies
(more) 1st: 1313.9 kJmol−1
2nd: 3388.3 kJmol−1
3rd: 5300.5 kJmol−1
Atomic radius 60 pm
Atomic radius (calc.
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(neutral oxide)
Electronegativity 3.44 (Pauling scale)
Ionization energies
(more) 1st: 1313.9 kJmol−1
2nd: 3388.3 kJmol−1
3rd: 5300.5 kJmol−1
Atomic radius 60 pm
Atomic radius (calc.
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fetus (or foetus, or fœtus) is a developing mammal or other viviparous vertebrate, after the embryonic stage and before birth. The plural is fetuses (foetuses, fœtuses) or, very rarely, foeti.
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