Examples of gestation in the following topics:
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- Maternal insulin resistance can lead to gestational diabetes.
- Gestational diabetes (or gestational diabetes mellitus, GDM) is a condition in which women without previously diagnosed diabetes exhibit high blood glucose levels during pregnancy (especially during the third trimester).
- Gestational diabetes is caused when the insulin receptors do not function properly.
- Gestational diabetes generally has few symptoms and it is most commonly diagnosed by screening during pregnancy.
- Babies born to mothers with untreated gestational diabetes are typically at increased risk of problems such as being large for gestational age (which may lead to delivery complications), low blood sugar, and jaundice.
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- At four weeks gestation, simple ectoderm epithelium forms.
- Epidermal ridges (e.g. fingerprints) begin to develop around 10 weeks gestation and are completed by 17 weeks gestation.
- At 16 weeks gestation, the basement membrane folds.
- At 20 weeks gestation, hair begins to grow from sebaceous glands, while sweat glands are formed from coiled cords.
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- There are many forms of pregnancy-induced hypertension (increased arterial blood pressure after 20 weeks gestation), of varying severity.
- Gestational hypertension or pregnancy-induced hypertension (PIH) is defined as the development of new arterial hypertension in a pregnant woman after 20 weeks gestation without the presence of protein in the urine.
- Pre-eclampsia may develop from 20 weeks' gestation (it is considered early onset before 32 weeks, which is associated with increased morbidity).
- HELLP usually begins during the third trimester; rare cases have been reported as early as 23 weeks gestation.
- In gestational hypertension, the muscle of the maternal blood vessels feeding the placenta is larger than it should be due to inflammation.
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- Weeks five to eight of gestation develops the major organs, including the circulatory, nervous, and gastrointestinal systems.
- Weeks five through eight of gestation are characterized by the development of the major organ systems, including the circulatory, nervous, lymphatic, and gastrointestinal systems.
- Gestational age is the time
that has passed since the onset of the last menstruation, which occurs two weeks
before the actual fertilization.
- Thus, the first week of embryonic age is already week three
counting with gestational age.
- By week eight of gestation, the embryo measures 13 millimeters in length.
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- Early medical abortions account for the majority of abortions before 9 weeks gestation in Britain, France, Switzerland, and the Nordic countries.
- Up to 15 weeks' gestation, suction-aspiration or vacuum aspiration are the most common surgical methods of induced abortion.
- From the 15th week of gestation until approximately the 26th, other techniques must be used.
- The risk of abortion-related mortality increases with gestational age, but remains lower than that of childbirth through at least 21 weeks' gestation.
- The use of abortion procedures is dictated primarily by gestational time period.
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- The yolk sac is the first element seen in the gestational sac during pregnancy.
- In humans, it is usually visible at five weeks of gestation.
- Identifying a true gestation sac is a critical landmark, and is reliably seen in early pregnancy through ultrasound.
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- The fourth week of gestation is characterized by the flexion of the superior portion of the neural tube to create the mesencephalon.
- Late in the fourth week of gestation, the superior part of the neural tube flexes at the level of the future midbrain, the mesencephalon.
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- With obstetric ultrasonography the gestational sac sometimes can be visualized as early as four and a half weeks of gestation (approximately two and a half weeks after ovulation) and the yolk sac at about five weeks' gestation.
- The heartbeat may be seen as early as six weeks, and is usually visible by seven weeks' gestation.
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- Early in gestation, a fetus has a cartilaginous skeleton that becomes skeletal bones in the gradual process of endochondral ossification.
- Early in gestation, a fetus has a cartilaginous skeleton from which the long bones and most other bones gradually form throughout the remaining gestation period and for years after birth in a process called endochondral ossification.
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- Pregnancy is the period of gestation from the fertilization of an egg, through development of a fetus, and ending at birth.
- The term embryo is used primarily for developing humans up
to eight weeks after fertilization (to the 10th week of gestation).
- In a pregnancy, there can be multiple gestations, as in the case of twins or triplets.