--- abstract: 'The study was conducted to determine the desirability or otherwise of mathematically correcting every normal foetal head shape to an ideal shape prior to dating using the biparietal diameter (BPD). Transabdominal Sonography was performed in 118 pregnant women in their second- and third- trimesters. The BPDs and fronto-occipital diameters (FODs) were measured. A study of 100 foetuses with normal head shapes was used to derive in this environment, a regression equation for an area corrected BPD (BPDa): BPDa = - 2. 853 + 0.483 (BPD + FOD). The BPDa of 18 foetuses with normal head shapes, were computed with this equation. Z test was performed to compare the mean BPD and Mean BPDa. Z statistic showed no significant difference (p>0.5) between BPDa and BPD in this group of foetuses with normal head shapes. There is no need to mathematically correct normocephalic foetal head shapes to ideal shapes before dating using the BPDs' altloc: - http://www.ojhas.org/issue26/2008-2-5.htm chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: - tonybullng@yahoo.ca - ~ - ~ - ~ creators_name: - family: Ugwu given: AC honourific: '' lineage: '' - family: Nwobi given: IC honourific: '' lineage: '' - family: Eteudo given: AN honourific: '' lineage: '' - family: Ovuoba given: KN honourific: '' lineage: '' date: 2008-07-21 date_type: published datestamp: 2008-09-19 13:59:35 department: ~ dir: disk0/00/00/62/01 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: - Kakkilaya BS editors_name: - family: Kakkilaya given: Srinivas honourific: Dr. lineage: '' eprint_status: archive eprintid: 6201 fileinfo: /style/images/fileicons/application_pdf.png;/6201/1/2008%2D2%2D5.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'Foetus, Mathematical Correction, Biparietal Diameter, Cephalic Index, Ultrasonography' lastmod: 2011-03-11 08:57:11 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: 2 pagerange: ~ pubdom: TRUE publication: Online Journal of Health and Allied Sciences publisher: Dr. B.S. Kakkilaya refereed: TRUE referencetext: "1.\tAmerican Institute of ultrasound in Medicine. Guidelines for the performance of the Antepartum obstetrical ultrasound examination. 1994. Laurel, MD, American Institute of Ultrasound in Medicine.\r\n2.\tKurtz AB, Wapner RJ, Kurtz RJ et al. Analysis of biparietal diameter as an accurate indicator of gestational age. J Clin ultrasound 1980;8:319.\r\n3.\tDoubilet PM, Greenes RA. Improved prediction of gestational age from foetal head measurements. AJR 1984;142:797. \r\n4.\tKurts AB. Fetal Growth In: The Foetus. Syllabus Laurel, MD. American Institute of Ultrasound in Medicine. 1997 pp 77-83. \r\n5.\tBenson CB, Doubilet PM. Sonographic prediction of gestational age: Accuracy of second-and third-trimester foetal measurements. AJR 1991;157:1275. \r\n6.\tUgwu AC, Ewunuonu EO, Nwobi IC, Egwu OA, Ovuoba KN. Sonographic Assessment of Fetal Cephalic Index in a Nigerian population: A novel paradigm J Diag Med Sonography 2007;23(2):87-90. \r\n7.\tHass LL. Roentgenological skull measurements and their diagnostic applications. AJR 1952;67:197-209. \r\n8.\tJordan HVF. The diferential enlargement of the neurocranium in the full-term fetus. S Afr Med J 1976;50:1978-1981. \r\n9.\tFriel JP. Dorland's illustrated medical dictionary, 25th ed. Philadelphia: Saunders, 1974:pp 470.\r\n10.\tRichards DS, Cornwall G. Head. Available at http://www.obgyn.ufl.edu/ultrasound/medinfoversion/sec12/12_2.html (Accessed 16/06/07)." relation_type: [] relation_uri: [] reportno: ~ rev_number: 20 series: ~ source: ~ status_changed: 2008-09-19 13:59:34 subjects: - OJHAS succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: The Effect Of Normocephalic Foetal Skull On Foetal Dating Using Biparietal Diameter type: journale userid: 4338 volume: 7