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The sign is usually present from 4–6 weeks [2] until the 12th week of pregnancy. Hegar's sign is more difficult to recognize in multiparous women. Interpretation: On bimanual examination (two fingers in the anterior fornix and two fingers below the uterus per abdomen), the abdominal and vaginal fingers seem to oppose below the body of uterus ...
[citation needed] For example, the obstetric history of a female who has had two pregnancies (both of which resulted in live births) would be noted as G 2 P 2. The obstetric history of a female who has had four pregnancies, one of which was a miscarriage before 20 weeks, would be noted in the GPA system as G 4 P 3 A 1 and in the GP system as G ...
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
Women who are underweight (BMI of less than 18.5), should gain between 12.7 and 18 kg (28–40 lb), while those who are overweight (BMI of 25–29.9) are advised to gain between 6.8 and 11.3 kg (15–25 lb) and those who are obese (BMI ≥ 30) should gain between 5–9 kg (11–20 lb). [105]
NER 66 Aerolite is an example of a 2-2-4 locomotive. In Whyte notation, a 2-2-4T is a steam locomotive that has two leading wheels followed by two coupled driving wheels and four trailing wheels. This was an unusual wheel arrangement, only used on a few specialised locomotives. This wheel arrangement is only used for tank locomotives.
The argon found in Earth's atmosphere is 99.6% 40 Ar; whereas the argon in the Sun – and presumably in the primordial material that condensed into the planets – is mostly 36 Ar, with less than 15% of 38 Ar. It follows that most of Earth's argon derives from potassium-40 that decayed into argon-40, which eventually escaped to the atmosphere.