Chorionic villus sampling by rigid forceps: experience with 300 cases at risk for thalassemia major.

Abstract:

:In this article we report the results of chorionic villus sampling by a biopsy forceps inserted via the cervix under ultrasonic guidance in 300 pregnancies at risk for thalassemia major. A sufficient amount of chorionic villi for deoxyribonucleic acid analysis by oligonucleotide hybridization was obtained in all cases tested but one, with a success rate of 99.7%. The percentage of fetal loss, expressed as proportion of continuing pregnancies, was 4.8%. To verify the results, we carried out amniocyte deoxyribonucleic acid analysis in all the continuing pregnancies for the first 100 cases and in those in which trophoblast deoxyribonucleic acid analysis showed the heterozygous state for beta-thalassemia for the second 200 cases. At the beginning we had two cases of decidual contamination in such an amount to cause misdiagnosis. Successively more careful elimination of decidual tissue from villi avoided avoided this pitfall. These results indicate that chorionic villus sampling by a rigid forceps is a reliable and relatively safe method for fetal diagnosis of genetic diseases by deoxyribonucleic acid analysis.

journal_name

Am J Obstet Gynecol

authors

Monni G,Ibba RM,Olla G,Rosatelli C,Cao A

doi

10.1016/0002-9378(87)90352-8

subject

Has Abstract

pub_date

1987-04-01 00:00:00

pages

912-4

issue

4

eissn

0002-9378

issn

1097-6868

pii

0002-9378(87)90352-8

journal_volume

156

pub_type

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