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Umbilical cord prolapse is when the umbilical cord comes out of the uterus with or before the presenting part of the baby. [2] The concern with cord prolapse is that pressure on the cord from the baby will compromise blood flow to the baby. [2] It usually occurs during labor but can occur anytime after the rupture of membranes. [1] [5]
Before 24 weeks the fetus is still developing its organs, and the amniotic fluid is important for protecting the fetus against infection, physical impact, and for preventing the umbilical cord from becoming compressed. It also allows for fetal movement and breathing that is necessary for the development of the lungs, chest, and bones. [8]
It is thought that vasa previa arises from an early placenta previa. As the pregnancy progresses, the placenta tissue surrounding the vessels over the cervix undergoes atrophy, and the placenta grows preferentially toward the upper portion of the uterus. This leaves unprotected vessels running over the cervix and in the lower uterine segment.
Intrauterine hypoxia (also known as fetal hypoxia) occurs when the fetus is deprived of an adequate supply of oxygen.It may be due to a variety of reasons such as prolapse or occlusion of the umbilical cord, placental infarction, maternal diabetes (prepregnancy or gestational diabetes) [1] and maternal smoking.
Umbilical cord prolapse occurs when the umbilical cord comes out of the uterus with or before the presenting part of the fetus. It is a relatively rare condition and occurs in fewer than 1% of pregnancies. Cord prolapse is more common in women who have had rupture of their amniotic sac.
An obstetric labor complication is a difficulty or abnormality that arises during the process of labor or delivery.. The Trust for America's Health reports that as of 2011, about one third of American births have some complications; many are directly related to the mother's health including increasing rates of obesity, type 2 diabetes, and physical inactivity.
The treatment of obstructed labour may require cesarean section or vacuum extraction with possible surgical opening of the symphysis pubis. [4] Caesarean section is an invasive method but is often the only method that will save the lives of both the mother and the infant. [18] Symphysiotomy is the surgical opening of the symphysis pubis.
In velamentous cord insertion, the vessels of the umbilical cord are improperly inserted in the chorioamniotic membrane, and hence the vessels traverse between the amnion and the chorion towards the placenta. [1] [11] Without Wharton's jelly protecting the vessels, the exposed vessels are susceptible to compression and rupture. [1] [9]