“Initial ultrasound evaluation at 20 weeks gestation revealed a male fetus with a significantly enlarged bladder, severely decreased amniotic fluid volume (oligohydramnios) and bilateral hydronephrosis.”
“View larger image » If the serial fetal bladder drainages for urinary electrolytes and protein components come back favorable and if there is a recent history of decreased to no amniotic fluid (oligohydramnios, anhydramnios) and no chromosomal abnormalities in a male fetus, the family may be offered fetal intervention with a vesicoamniotic shunt placement or fetal cystoscopy to further evaluate the source of fetal urinary tract obstruction.”
“During the third trimester, the baby is at risk for gastroschisis-related complications such as bowel dilatation (stretching), decreased fetal growth rate, oligohydramnios (low volume of amniotic fluid, indicating reduced fetal kidney function), and, in only very rare cases, death.”
“Natural history studies in pregnancies with early urinary tract obstruction and oligohydramnios suggest the chances of survival to be less than 5 percent, with expectations for severe renal impairment.”
“Amongst the twins with twin-twin transfusion syndrome, the donor twin had mild oligohydramnios, a small bladder, marginal insertion of the umbilical cord into the placenta and an elevated umbilical artery Doppler velocimetry findings suggesting increased placental resistance to blood flow.”
“The patient returned at 19 weeks for reevaluation, which now demonstrated minimal amniotic fluid (severe oligohydramnios) around the donor fetus, as well as a tiny, non-filling bladder and significantly abnormal Doppler findings with absence of end-diastolic flow in the umbilical artery, suggesting increased placental resistance compared to her prior studies of twin-twin transfusion syndrome.”
“The donor twin had already begun to reestablish normal amniotic fluid volume within its amniotic sac, and the bladder was of normal size (it had previously had severe oligohydramnios and a tiny, non-filling bladder).”
“Adzick NS, Harrison MR, Glick PL, Villa RL, Finkbeiner W: Experimental pulmonary hypoplasia and oligohydramnios: Relative contributions of lung fluid and fetal breathing movements.”
“When fetal urination is impaired, the opposite complication, oligohydramnios, usually occurs.”
“A condition where there is too little amniotic fluid in the sac is called oligohydramnios.”
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