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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 ...
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]
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.
The study defines pre-term births as those before 37 weeks and very pre-term births as those before 32 weeks of pregnancy. Premature babies no more likely to underperform by end of school ...
The consequences of prematurity result from various factors, including genetic predisposition, conditions during pregnancy and childbirth, the level of neonatal care received, and the home environment. [1] Due to advances in preterm survival rates, adults born preterm are an steadily increasing patient population, though they remain underperceived.
Normal weight at term delivery is 2,500–4,200 g (5 lb 8 oz – 9 lb 4 oz). [citation needed] SGA is not a synonym of low birth weight, very low birth weight, or extremely low birth weight. For example, with a 35-week gestational age delivery, a weight of 2,250 g (4 lb 15 oz) is appropriate for gestational age but is still low birth weight.
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]
In 20 of these studies, they found pregnant people using cannabis were 1.5 times more likely to have a premature delivery, while in 18 studies about low birth weight, pregnant people using ...