The effect of normocephalic foetal skull on foetal dating using biparietal diameter

Ugwu, A.C.; Nwobi, I.C.; Eteudo, A.N. and Ovuoba, K.N. (2008) The effect of normocephalic foetal skull on foetal dating using biparietal diameter. Online Journal Of Health And Allied Sciences, 7 (2). ISSN 0972-5997

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Official URL: http://www.ojhas.org/issue26/2008-2-5.htm

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

EPrint Type:	Article
Uncontrolled Keywords:	Foetus, Mathematical Correction, Biparietal Diameter, Cephalic Index, Ultrasonography, Foetus Head Shape, Normocephalic Foetal Head Shapes
Subjects:	Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Ultrasonography Diagnosis > Diagnostic Techniques and Procedures Embryonic Structures > Fetus Body Regions > Head Environment and Public Health > Public Health > Epidemiologic Measurements Investigative Techniques > Calibration -Journal Repositories > Online Journal of Health and Allied Sciences Reproductive and Urinary Physiology > Reproduction > Pregnancy
ID Code:	3046
Deposited By:	Dr Srinivas Kakkilaya
Deposited On:	08 September 2008

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