title: Transabdominal chorionic villus sampling in the second trimester.
abstract: Transabdominal chorionic villus sampling under ultrasound guidance was carried out in 19 patients in the second trimester. We found that needle size combination 17/19 provided the best results with consistently adequate samples of tissue. Transabdominal chorionic villus sampling is a potentially useful technique for providing relatively rapid prenatal genetic diagnosis in patients at high risk in the second trimester.
authors.affiliation: Department of Obstetrics and Gynecology, Toronto General Hospital, Ontario, Canada.
authors.forename: C K
authors.initials: CK
authors.lastname: Hogdall
authors.forename: T A
authors.initials: TA
authors.lastname: Doran
authors.forename: J
authors.initials: J
authors.lastname: Shime
authors.forename: S
authors.initials: S
authors.lastname: Wilson
authors.forename: I
authors.initials: I
authors.lastname: Teshima
mesh_terms: D001706:Biopsy / Q000379:methods; D002824:Chorionic Villi / Q000473:pathology*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D005820:Genetic Testing; D006801:Humans; D007621:Karyotyping; D009339:Needles; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D012307:Risk Factors; D014463:Ultrasonography