DOI: http://dx.doi.org/10.18203/2320-1770.ijrcog20193805

Assessment of the customized birth weight formula in a low risk Indian population

Dipti Das, K. Aparna Sharma, Vatsla Dadhwal, Dipika Deka, Perumal Vanamail

Abstract


Background: Birth weight is probably the single most important factor that affects neonatal mortality, infant and childhood morbidity in both developed and developing countries. Objective of the study was to formulate a model for prediction of fetal weight at term based on individualized fetal growth parameters.

Methods: 131 participant low risk gravidas were enrolled into the study. The participants underwent an ultrasound 7 days prior to delivery. All fetal variables of growth of a random 100 participants were incorporated in an equation derived using multiple regressions to predict birth weight at term. The new equation was then prospectively applied to another 31 pregnant women for validation. The diagnostic performance of the new regression formula was then compared to the Hadlock formula.

Results: The customised birth weight formula predicted a higher accuracy with MPE±SD of 0.790±9. compared to the Hadlock formula with MPE±SD - 4.42±8.73. The new formula also explained a greater variance in birth weight of 56% compared to the Hadlock formula of 49%.

Conclusions: The new model based on individualized fetal growth parameters recognizes the capacity to modulate an accurate final birth weight, thus emphasizing the need for customized population specific birth weight formulas.


Keywords


Customized, Estimated fetal weight, Fetal biometry

Full Text:

PDF

References


Lee AC, Kozuki N, Cousens S. Estimates of burden and consequences of infants born small for gestational age in low and middle income countries with intergrowth-21st standard: analysis of cherg datasets. BMJ. 2017;358:3677.

Koyanagi A, Jun Z, Amarjargal D, Fumi H, Kenji S, Joao PS. Macrosomia in 23 developing countries: an analysis of a multicountry, facility-based, cross sectionalsurvey.Lancet. 2013;381(9865):476-483.

Moraitis AA, Wood AM, Fleming M, Smith GC. Birth weight percentile and the risk of term perinatal death. Obstet Gynecol. 2014;124(2):274-83.

Longo S, Bollani L, Decembrino L. Short-term and long-term sequelae in intrauterine growth retardation (IUGR). J Maternal Fetal Neonatal Med. 2013;26(3):222-5.

Kolderup LB, Laros RK, Musci TJ. Incidence of persistent birth injury in macrosomic infants association with mode of delivery. Am J Obst Gyn. 1997;177(1):37-41.

Christoffersson M, Rydhstroem H. Shoulder dystocia and brachial plexus injury: a population-based study. Gyn Obstetric Investigation. 2002;53(1):42-7.

Campbell S, Wilkin D. Ultrasonic measurement of fetal abdomen circumference in the estimation of fetal weight. BJOG: An Int J Obst Gyn. 1975;82(9):689-97.

Hadlock F, Harrist R, Carpenter R, Deter R, Park S. Sonographic estimation of fetal weight. The value of femur length in addition to head and abdomen measurements. Radiol. 1984;150(2):535-40.

Warsof SL, Gohari P, Berkowitz RL, Hobbins JC. The estimation of fetal weight by computer assisted analysis. Am J Obst Gyn. 1977;128(8):881-92.

Hadlock FP, Harrist R, Sharman RS, Deter RL, Park SK. Estimation of fetal weight with the use of head, body, and femur measurements a prospective study. Am J Obst Gynecol. 1985;151(3):333-7.

Woo J, Wan C, Cho K. Computer-assisted evaluation of ultrasonic fetal weight prediction using multiple regression equations with and without the fetal femur length. J Ultrasound Med. 1985;4(2):65-7.

Melamed N, Yogev Y, Meizner I, Mashiach R, Pardo J, Haroush A. Prediction of fetal macrosomia: effect of sonographic fetal weight‐estimation model and threshold used. Ultrasound Obst Gynecol. 2011;38(1):74-81.

Lee W, Deter RL, Ebersole JD, Huang R, Blanckaert K, Romero R. Birth weight prediction by three-dimensional ultrasonography: fractional limb volume. J Ultrasound Medicine. 2001;20(12):1283-92.

Bennini J, Marussi E, Barini R, Faro C, Peralta C. Birth ‐ weight prediction by two‐and three ‐ dimensional ultrasound imaging. Ultrasound Obst Gynecol. 2010;35(4):426-33.

Yang F, Leung KY, Hou YW, Yuan Y, Tang MY. Birth‐weight prediction using three‐dimensional sonographic fractional thigh volume at term in a Chinese population. Ultrasound Obst Gynecol. 2011;38(4):425-33.