Derivation of new clinical formulae and tricolor predicting chart for estimating birth weight at term
DOI:
https://doi.org/10.18203/2320-1770.ijrcog20150424Keywords:
Clinical formulae, Chart, Estimating, Birth weightAbstract
Background: Accurate fetal weight estimation is important for pregnancy and labor management. Clinical formulae are easy to use but have not been extensively studied. The use of the product of symphysiofundal height (SFH) and maternal abdominal girth (MAG) has been notorious for overestimating fetal weight, hence the need for its modification and production of pictorial chart for easy usage. The objective was to derive new Clinical Formulae and Tricolor birth weight predicting chart (TBPC) at term
Methods: This is a cross sectional study done in the labor ward of Nnamdi Azikiwe University Teaching Hospital, (NAUTH) Nnewi, Nigeria between 1st July, 2011 and 31st December, 2011. A cross section of pregnant women at term with singleton who presented in labor ward for delivery was recruited for the study. The data collected were: the gestational age, maternal weight, MAG, SFH and birth weight (BW). Analysis was with SPSS version 16.
Results: The new simple formula and the simple regression equation for predicting birth weight (BW) are
BW = SFH (MAG - 7), (BW) =1000+ 0.7SFH (MAG- 7) respectively. TBPC was constructed for estimating birth weight.
Conclusion: New formula, simple regression equation and TBPC are for birth weight estimation. The TBPC should be used in peripheral centers and referral made when necessary to a higher centre.
Metrics
References
Akinola S, Oluwafemi K, Ernest O, Niyi O, Solomon O, Oluwagbemiga O Ayoola et al. Clinical Vs.Sonographic estimation of fetal Weight in South west, Nigeria. Journal of Health, Pop & Nutr. March. 2007;25(1):14–23.
Onah HE, Ikeme ACC, Nkpo PO. Correlation between intrapartum FH and Birth weight. African Journal of Rep Health. 2002;6(2):23–9.
Gerard GN., Estimation of foetal weight. A review Article last updateApril15, 2010. Available on. e-medicine. Com. accessed on 15th September, 2010.
Ayoola OO, Orji EO, Adetiloye VA, Nzeh DA. Accuracy of various ultra formula in predicting fetal weight in a Nigerian population Journal of Chinese Clinical medicine. 2008;3(1).
Aghababii S, Nahidi F. The use of Tricolour measuring tape as a predictor of birth weight. J med Sci. 2005;5(4):307-10.
Gary C , Kenneth H, Steven L. Foetal Growth disorders in William Obstetrics, 22 nd edition; McGRAW-Hill medical publishing division, 2005; 893 – 910.
Bothner BM, Gulmezoglu AM, Holmeyr GS. SFH measurements during labour; A prospective descriptive study. African Journal of Rep. Health. 2000;4(1):48–55.
Gerard G, Nahum, Harold S. Ultrasonographic prediction of term birth weight. Am J Obstet Gynaecol. 2003;188(2):566-74.
Egwuatu VE, Osefor NJ. SFH, Abd. Circumference measurements: Foetal Age Relationship in Nigerian women. W Afr J of medicine. 1988;7(2):77–88.
Dare FO, Ademowore AS, Ifaturoti OO, Nganwuchi A. The value of SFH/Abd girth measurement in predicting foetal wt. International Journal of Gynaecology & Obstetric. 1990;31(3):243–8.
Bhandary AA, Pinto PJ, Shetly AP. Comparative study of various methods of fetal weight estimation at term pregnancy. J Obstel Gynecol. 2004;54(4):336–9.
Joseph SK, Hextan YS, Kelly KL, Fung KP, Vivian C.W. Estimation of Fetal wt in utero from symphsiofundal height and Abd. Girth measurement.Aust. NZ J Obstet Gynaecol 1985;25:268–71.
Helmut P, Goran S. Estimation of Foetal weight by external Abdominal Measurement. Acta Obstet Gynecol Scan. 1984;62:175–9.
