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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 ...
Those born extremely prematurely (22–27 weeks) have an even higher mortality rate of 1.9x to 4.0x. [3] Preterms have increased risks of chronic disorders involving cardiovascular, endocrine/metabolic, respiratory, renal, neurodevelopmental, and psychiatric disorders. [4] [5] Effects of preterm birth do not disappear after age 2. [6]
Late preterm infants are infants born at a gestational age between 34 + 0 ⁄ 7 weeks and 36 + 6 ⁄ 7 weeks. [1] They have higher morbidity and mortality rates than term infants (gestational age ≥37 weeks) due to their relative physiologic and metabolic immaturity, even though they are often the size and weight of some term infants.
Preterm birth. Miscarriage and stillbirth. ... Because of the increased risk of a stillbirth after 40 weeks, it is common for doctors to propose labor induction at 39 to 40 weeks.
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]
However, spontaneous birth after 37 weeks is considered term and is not associated with the same risks of a preterm birth. [60] Planned birth before 39 weeks by caesarean section or labor induction, although "at term", results in an increased risk of complications. [65]
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 weight, or preterm birth. [3]
Preterm birth is the birth of an infant at fewer than 37 weeks gestational age. Globally, about 15 million infants were born before 37 weeks of gestation. [152] Premature birth is the leading cause of death in children under five years of age though many that survive experience disabilities including learning defects and visual and hearing ...