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Amnioinfusion is a method in which isotonic fluid is instilled into the uterine cavity.. It was introduced in the 1960s as a means of terminating pregnancy and inducing labor in intrauterine death, but is currently used as a treatment in order to correct fetal heart rate changes caused by umbilical cord compression, indicated by variable decelerations seen on fetal heart rate monitoring.
Meconium induces an inflammatory reaction within the lungs as there is an increase of autophagocytic cells and levels of caspase 3 after exposure. After 8 hours of meconium exposure, in rabbit foetuses, the total amount of apoptotic cells is 54%. [15] Therefore, the majority of meconium-induced lung damage may be due to the apoptosis of lung ...
Causes include hypoxia, meconium aspiration, and respiratory distress syndrome. Left untreated, this can lead to hypoxic respiratory failure (HRF). [1] Decreased diameter of pulmonary vessels with hypertrophy of vessel walls: This has a poor prognosis, as it is a fixed abnormality.
Complications can include meconium, respiratory distress, anemia, and stillbirth. [1] Multiple wraps are associated with greater risk. [3] The diagnosis may be suspected if there is a decrease in the baby's heart rate during delivery. [1] Nuchal cords are typically checked for by running the finger over the baby's neck once the head has ...
Post-maturity is more likely to happen when a mother has had a post-term pregnancy before. After one post-term pregnancy, the risk of a second post-term birth increases by 2 to 3 times. [8] Other, minor risk factors include an older or obese mother, a white mother, male baby, or a family history of post-maturity. [9]
Postterm pregnancy is when a woman has not yet delivered her baby after 42 weeks of gestation, two weeks beyond the typical 40-week duration of pregnancy. [1] Postmature births carry risks for both the mother and the baby, including fetal malnutrition, meconium aspiration syndrome, and stillbirths. [2]
It is characterized by changes in fetal movement, growth, heart rate, and presence of meconium stained fluid. [4] Risk factors for fetal distress/non-reassuring fetal status include anemia, restriction of fetal growth, maternal hypertension or cardiovascular disease, low amniotic fluid or meconium in the amniotic fluid, or a post-term pregnancy.
Amnioinfusion: This treatment attempts to replace the lost amniotic fluid from the uterus by infusing normal saline fluid into the uterine cavity. This can be done through the vagina and cervix (transcervical amnioinfusion) or by passing a needle through the abdominal wall (transabdominal amnioinfusion).