NBME 10. 180Q amniocentesis 02-13 (1) Flashcards
what weeks performed amniocentesis?
15-18 weeks.
amniocentesis definition?
invasive sampling of amniotic fluid through the abdominal wall
The procedure is performed under ultrasound guidance, taking care to avoid the placenta, fetal vessels, and fetus, in addition to the maternal bowel and bladder.
when amniocentesis considered?
after an abnormal prenatal quad screen to detect chromosomal abnormalities by a genetic analysis of the amniotic fluid
amniocentesis commonly recommended when as well?
when ultrasonography is concerning for a neural tube defect, since it can further assess the presence of a neural tube defect through detecting the presence of amniotic fluid acetylcholinesterase.
complications of amniocentesis?
premature rupture of membranes, fetal injury, fetal demise, and infection of the mother or fetus.
premature rupture of membranes - post amniocentesis is common!!
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In some cases, amniocentesis can be associated with chronic leakage of fluid, and the mother must undergo routine ultrasonography to monitor amniotic fluid volume
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