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Advantages & limitations of chorionic villous samp

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Advantages & limitations of chorionic villous samp

Postby caryn » Wed Nov 04, 2009 12:00 am

by caryn (10124 Posts), Wed Nov 04, 2009 12:00 am

...When used to screen for preeclamsia (prevalence 29.6% in the sample), the sensitivity and specificity of placental biopsy were respectively 56.8% and 87.2% (76.9% in case of intra-uterine growth retardation). When used to screen for chromosomal aberrations (prevalence 7.4%), the specificity was 14.3% and the sensitivity 93.2%...

http://www.ncbi.nlm.nih.gov/pubmed/19883018

As tests for preeclampsia go, the sensitivity and specificity of CVS are actually not too bad. They're not ideal, but considering the dearth of tests they're not worthless -- especially if you're getting CVS anyway.

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