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Oocyte abnormalities can be caused by a variety of genetic factors affecting different stages in meiosis. [1] Moreover, ageing is associated with oocyte abnormalities since higher maternal age is associated with oocytes with a reduced gene expression of spindle assembly checkpoints which are important in maintaining stability in the genome.
Maternal death or maternal mortality is defined in slightly different ways by several different health organizations. The World Health Organization (WHO) defines maternal death as the death of a pregnant mother due to complications related to pregnancy, underlying conditions worsened by the pregnancy or management of these conditions.
Alcohol: Use during pregnancy can cause fetal alcohol syndrome and fetal alcohol spectrum disorder. [67] Tobacco use: During pregnancy, causes twice the risk of premature rupture of membranes, placental abruption and placenta previa. [68] Also, it increases the odds of the baby being born prematurely by 30%. [69]
Kate Cox's legal fight to get an abortion in Texas exposes the difficulties of determining who qualifies for a medical exemption to its abortion ban.
Sheehan's syndrome, also known as postpartum pituitary gland necrosis, occurs when the pituitary gland is damaged due to significant blood loss and hypovolemic shock (ischemic necrosis) or stroke, originally described during or after childbirth leading to decreased functioning of the pituitary gland (hypopituitarism). [1]
Prolonged obstructed labour can lead to stillbirth, obstetric fistula, and maternal death. [19] Fetal death can be caused by asphyxia. [1] Obstructed labor is the leading cause of uterine rupture worldwide. [1] Maternal death can result from uterine rupture, complications during caesarean section, or sepsis. [18]
In anembryonic pregnancy, levels of the pregnancy hormone human chorionic gonadotropin (hCG) typically rise for a time, which can cause positive pregnancy test results and pregnancy symptoms such as tender breasts. [2] [7] Because of the presence of hCG, an ultrasound is typically necessary to diagnose an anembryonic pregnancy. [3]
A national study examined the death rates from pregnancy in white and black women. The study found that for five particular pregnancy problems, the death risk was 2.4 to 3.3 times higher among black women. Preeclampsia, placenta abruptio, placenta previa, and postpartum hemorrhage were among them (Howell, 2018).