Using ART, what is the risk for preterm birth?
Preterm birth occurs when a woman gives birth before 37 full weeks of pregnancy. Infants born preterm are at greater risk for death in the first few days of life, as well as other adverse health outcomes including mental retardation, visual and hearing impairments, learning disabilities, and behavioral and emotional problems throughout life. Preterm births also cause substantial emotional and economic burdens for families. Figure 11 shows percentages of preterm births resulting from ART cycles that used fresh nondonor eggs or embryos, by the number of infants born. For singletons, it shows separately the preterm percentage for pregnancies that started with one fetus (single-fetus pregnancies) or more than one (multiple-fetus pregnancies). Among singletons, the percentage of preterm births was higher for those from multiple-fetus pregnancies (18%) than those from single-fetus pregnancies (12%). In the general U.S. population, where singletons are almost always the result of a single-fet
Related Questions
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