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1.
August 2019

FAQ173, August 2019

When is a baby considered “preterm” or “extremely preterm?” A normal pregnancy lasts about 40 weeks. Babies born before 37 weeks of pregnancy are called “preterm” or “premature.” Babies born before 28 weeks of pregnancy are considered extremely preterm. The earlier a baby is born, the less likely he or she is to survive. Those who do survive often have serious, sometimes long-term, health problems and disabilities.


2.
January 2019

FAQ087, January 2019

What is preterm labor? Preterm labor is defined as regular contractions of the uterus resulting in changes in the cervix that start before 37 weeks of pregnancy. Changes in the cervix include effacement (the cervix thins out) and dilation (the cervix opens so that the fetus can enter the birth canal). In some cases preterm labor can lead to a baby being born too soon.


3.
January 2019

FAQ188, January 2019

How does multiple pregnancy occur? A pregnancy with more than one fetus is called multiple pregnancy. If more than one egg is released during the menstrual cycle and each is fertilized by a sperm, more than one embryo may implant and grow in your uterus. This type of pregnancy results in fraternal twins (or more). When a single fertilized egg splits, it results in multiple identical embryos. This type of pregnancy results in identical twins (or more). Identical twins are less common than fraternal twins.


4.
February 2016

FAQ192, February 2016

What is assisted vaginal delivery? Assisted vaginal delivery is vaginal delivery of a baby performed with the help of forceps or a vacuum device. It sometimes is called operative vaginal delivery.


American College of Obstetricians and Gynecologists
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