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805,800 [ 7 ] 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 ...
Fetal viability. Fetal viability is the ability of a human fetus to survive outside the uterus. Viability depends upon factors such as birth weight, gestational age, and the availability of advanced medical care. In low-income countries, more than 90% of extremely preterm newborns (less than 28 weeks gestational age) die due to a lack of said ...
The terms preterm and postterm have largely replaced earlier terms of premature and postmature. Preterm and postterm are defined above, whereas premature and postmature have historical meaning and relate more to the infant's size and state of development rather than to the stage of pregnancy. [25] [26]
Rarely, in cases of preterm PROM, amniotic fluid will stop leaking and the amniotic fluid volume will return to normal. [11] If PROM occurs before 37 weeks, it is called preterm prelabor rupture of membranes (PPROM), and the baby and mother are at greater risk of complications. PPROM causes one-third of all preterm births. [22]
According to the WHO, a preterm birth is defined as "babies born alive before 37 weeks of pregnancy are completed." [20] According to this classification, there are three sub-categories of preterm birth, based on gestational age: extremely preterm (fewer than 28 weeks), very preterm (28 to 32 weeks), moderate to late preterm (32 to 37 weeks). [20]
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.
Childbirth, also known as labour, parturition and delivery, is the completion of pregnancy where one or more babies exits the internal environment of the mother via vaginal delivery or caesarean section. [7] In 2019, there were about 140.11 million human births globally. [9] In the developed countries, most deliveries occur in hospitals, [10 ...
Pre-labor consists of the early signs before labor starts. It is the body's preparation for real labor. Prodromal labor has been misnamed as “false labor." Prodromal labor begins much as traditional labor but does not progress to the birth of the baby. Not everyone feels this stage of labor, though it does always occur.