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Re: ultrasound prenasal thickness From: Laureano Folgar (lfolgar@vianwe.com) Wed Aug 22 17:27:45 2007 Messages sorted by: [ date ][ thread ][ subject ][ author ] Next message: Dean Huffman .: "NPR Examines Hospitals That Prohibit Vaginal Births After C-Sections" Previous message: Joe: "Re: Pregnancy At Altitude" In reply to: mark decker: "Re: ultrasound prenasal thickness" Next in thread: Dr. John Provatopoulos B.Sc. M.D.C.M. F.R.S.C.: "Re: Gyn: CIS/positive margin" Thanks, the complete scenario is that i am involved in a Hispanic database of prenatal diagnoses which calculate Down syndrome risk whit PAPP-A, HCG, inhibin and no conjugated estriol. Now they are development a genetic sonogram for the 20 weeks echo using some parameters. Other parameters are registered for research , one of them is prenasal thickness, and i could read nothing about how to do it or a picture, and i hate to live in total darkness, thats all. mark decker escribió: > to be more specific - i saspect you are referencing prenasal thickness > in down's - tri 21 dx - > > the articles from 8-11/2005 are from one author and i can't find > follow up studies prekaryotype on follow up - the short pieces of the > articles i found don't discuss full incorporation into a quat screen > scenario per se - just comparing nb and nb abd prenasal measurements > with a 70% pick up rate at a 5% error rate with a combined screen > > nb screening is mentioned - varied results > > last full review i saw on tri 21 screening - looking at multiple > studies was from may 2007 > > hope this is useful to you > > thanks > > mdmd > > in short - validation studies not done yet - > > btw - fyi - maymon's study was on 21 down's infants and 500 controls > > At 06:33 AM 8/22/2007, you wrote: >> does anyone have experience in that subject?. >> I do not use actually >> l. folgar > Next message: Dean Huffman .: "NPR Examines Hospitals That Prohibit Vaginal Births After C-Sections" Previous message: Joe: "Re: Pregnancy At Altitude" In reply to: mark decker: "Re: ultrasound prenasal thickness" Next in thread: Dr. John Provatopoulos B.Sc. M.D.C.M. F.R.S.C.: "Re: Gyn: CIS/positive margin"

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