Arthritis & Rheumatism

Is fish intake linked to juvenile idiopathic arthritis?

Juvenile idiopathic arthritis (JIA) results from a complex interplay of genetic and environmental factors. Past efforts to identify JIA's environmental risk factors have been restricted due to limited high-quality data and ...

Diseases, Conditions, Syndromes

How human-derived RNA fragments help the hepatitis E virus

Why does hepatitis E become chronic in some patients, and why do medications not work? To find out, an international research team led by scientists from Bochum observed a patient with chronic hepatitis E infection over a ...

Obstetrics & gynaecology

Many US women unhappy with maternal health care, poll finds

Many women are unhappy with the state of U.S. maternal health care, but a major new poll finds most Americans don't understand how badly the nation lags behind other wealthy countries in this area.

Obstetrics & gynaecology

Study finds perineal cut reduces the risk of serious birth injury

In first-time mothers requiring vacuum-assisted delivery, a lateral episiotomy (angled cut) in the tissue between the vaginal and anal opening more than halves the risk of obstetric anal sphincter injury, a severe form of ...

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Pregnancy

Pregnancy (latin graviditas) is the carrying of one or more offspring, known as a fetus or embryo, inside the uterus of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Obstetrics is the surgical field that studies and cares for high risk pregnancy. Midwifery is the non-surgical field that cares for pregnancy and pregnant women.

Childbirth usually occurs about 38 weeks after conception; i.e., approximately 40 weeks from the last normal menstrual period (LNMP) in humans. The World Health Organization defines normal term for delivery as between 37 weeks and 42 weeks. The calculation of this date involves the assumption of a regular 28-day period.

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