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  2. Environmental toxicants and fetal development - Wikipedia

    en.wikipedia.org/wiki/Environmental_toxicants...

    One in ten US babies is born preterm and about 5% have low birth weight. Preterm birth, defined as birth at less than 37 weeks of gestation, is a major basis of infant mortality throughout childhood. Exposures to environmental toxins such as lead, tobacco smoke, and DDT have been linked with an increased risk for spontaneous abortion, low birth ...

  3. Miscarriage - Wikipedia

    en.wikipedia.org/wiki/Miscarriage

    [1] [7] [60] [123] A 2012 review found the risk of miscarriage between 5 and 20 weeks from 11% to 22%. [157] Up to the 13th week of pregnancy, the risk of miscarriage each week was around 2%, dropping to 1% in week 14 and reducing slowly between 14 and 20 weeks. [157]

  4. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and post-term at or beyond 42 weeks of gestation. The American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks ...

  5. Preterm birth - Wikipedia

    en.wikipedia.org/wiki/Preterm_birth

    Preterm birth, also known as premature birth, is the birth of a baby at fewer than 37 weeks gestational age, as opposed to full-term delivery at approximately 40 weeks. [1] Extreme preterm [ 2 ] is less than 28 weeks, very early preterm birth is between 28 and 32 weeks, early preterm birth occurs between 32 and 34 weeks, late preterm birth is ...

  6. Prelabor rupture of membranes - Wikipedia

    en.wikipedia.org/wiki/Prelabor_rupture_of_membranes

    When the fetus is 34 to 37 weeks gestation, the risk of being born prematurely must be weighed against the risk of PROM. Previously it was recommended that delivery be carried out as if the baby was term. [11] [8] A 2017 Cochrane review however found waiting resulted in better outcomes when pregnancy is before 37 weeks. [5]

  7. Fetal viability - Wikipedia

    en.wikipedia.org/wiki/Fetal_viability

    A preterm birth, also known as premature birth, is defined as babies born alive before 37 weeks of pregnancy are completed. [40] There are three types of preterm births: extremely preterm (less than 28 weeks), very preterm (28 to 32 weeks) and moderate to late preterm (32 to 37 weeks). [40]

  8. Miscarriage risks - Wikipedia

    en.wikipedia.org/wiki/Miscarriage_risks

    Miscarriage risks are those circumstances, conditions, and substances that increase the risk of miscarriage. Some risks are modifiable and can be changed. Other risks cannot be modified and can't be changed. Risks can be firmly tied to miscarriages and others are still under investigation. In addition, there are those circumstances and ...

  9. Complications of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Complications_of_pregnancy

    The infant may be seriously affected and have a variety of birth defects. Complications in the mother and fetus can include pre-eclampsia, anemia, miscarriage, low birth weight, still birth, congestive heart failure, impaired neurointellectual development, and if severe, congenital iodine deficiency syndrome.