Assertion: amniocentesis | /r/HasProperty | technique
Facets:
value: under continuous ultrasound guidance
type: OTHER
value: via a transabdominal approach
type: MANNER
value: for withdrawing amniotic fluid
type: PURPOSE
Source sentences:
text: Amniocentesis is a technique for withdrawing amniotic fluid from the uterine cavity using a needle, via a transabdominal approach and under continuous ultrasound guidance, in order to obtain a sample of fetal exfoliated cells, transudates, urine or secretions.