ABORTION
EDITED BY: travis poole
SUMMER SCHOOL
August 5, 2009
Spontaneous abortion is a complete spontaneous abortion at about 6 weeks from conception. Spontaneous abortion (also known as miscarriage) is the expulsion of an embryo or fetus due to accidental trauma or natural causes before approximately the 22nd week of gestation; the definition by gestational age varies by country. Most miscarriages are due to incorrect replication of chromosomes; they can also be caused by environmental factors. A pregnancy that ends before 37 weeks of gestation resulting in a live-born infant is known as a “premature birth”. When a fetus dies in the uterus after about 22 weeks, or during delivery, it is usually termed “stillborn”. Premature births and stillbirths are generally not considered to be miscarriages although usage of these terms can sometimes overlap. Between 10% and 50% of pregnancies end in clinically apparent miscarriage, depending upon the age and health of the pregnant……
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