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Re: nasal bones and Down's SyndromeFrom: Chris Harris (chris@astraia.com)Wed Nov 28 13:32:55 2001
At Sun, 25 Nov 2001, dr nayana parange wrote: > >hello ! >nasal bone measurements seem quite interesting and easy to image.what i >wanted to know was,are there any nomograms/centile charts available for >different gestational age? >are the results same in all types of population? >i observed that the study has been done in the western women.is there a >difference in asian poplulation? >what is the cut-off limit?(like for nuchal translucency)? >or should we consider nasal bone aplasia as more reliable? >have there been studies where all the markers-viz.increased nuchal >translucency,ducus venosus,nasal bone measurements,crl,heart rate etc >have been combined and compared with biochemical markers? >are all these parameters independent of each other or do they co-exist? >i am really interested in all thes parameters since in our set-up i have >to make do with ultrasound alone as our women do not have access to >other expensivesophisticated methods of prenatal diagnosis.i would be >really grateful to have a clarification of all my doubts so that i can >incorporate this into my daily practice.thanks , >with regards, >nayana,india > Dear Dr. Parange You raise a lot of interesting questions, which are probably best addressed to Dr. Cicero and her colleagues. Try mailing fmf@technocom.com Best wishes
-- Chris Harris astraia software, Munich, Germany
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