A Reproductive Lexicon


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breech birth

A breech birth is the birth of a baby from a breech presentation, which refers to the baby exiting the pelvis feet or buttocks first. It accounts for about 3-4 % of all singleton deliveries. Factors associated with breech birth include high parity with uterine relaxation, twin or multiple fetuses, preterm labor, changes in amniotic fluid volume (poly- or oligo-hydramnios), previous breech birth, placental anomalies (placenta previa or fundal placental implantation), fetal head anomalies (hydrocephaly or anencephaly), uterine anomalies, and pelvic tumors. Generally, a baby in the breech position will be delivered by Caesarean section, as vaginal delivery is associated with high risks to the life of the mother and child.