One hundred twin pregnancies in a prenatal diagnosis program.
One hundred pairs of twins were encountered in 8,500 pregnancies having genetic amniocentesis. Only 5 of 27 (18.5%) pairs were recognized before the institution of routine ultrasonic examination, while 69 of 73 (94%) twin pairs were found after ultrasound use. Amniotic fluid was obtained from both sacs in 71 of the 73 (97%) identified twin gestations in which both twins were living at the time of amniocentesis.
D000417:Albinism / Q000235:genetics; D000649:Amniocentesis; D000755:Anemia, Sickle Cell / Q000235:genetics; D002874:Chromosome Mapping; D000013:Congenital Abnormalities / Q000235:genetics*; D004200:Diseases in Twins; D005260:Female; D008040:Genetic Linkage; D006801:Humans; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000235:genetics; D008423:Maternal Age; D009436:Neural Tube Defects / Q000235:genetics; D011247:Pregnancy; D011296:Prenatal Diagnosis; D013789:Thalassemia / Q000235:genetics; D014463:Ultrasonography