Accuracy of Risanto's Formula Compared with Johnson's to Estimate Fetal Weight in Overweight Mothers

https://doi.org/10.22146/jkr.13873

Fifi Noviana(1*), Risanto Siswosudarmo(2), Diah Rumekti Hadiati(3)

(1) Gadjah Mada University
(2) 
(3) 
(*) Corresponding Author

Abstract


Background: Estimated fetal weight (EFW) is becoming important because it is used as a guidence for determining mode of delivery. The use of estimated fetal weight based on fundal height has been widely used, but its use in overweight pregnant mothers was still limitted.

Objective: To compare the accuracy of Risanto’s and Johnson’s formulas in estimating fetal weight based on fundal height in overweight mothers.

Method: It was a cross-sectional study, conducted from March 2013 to July 2014 in Sardjito hospital and hospital networks. All pregnant mothers meeting the elligibility criteria were used as study subjects. Overweight mother was defined based on body mass index (BMI) and skinfold thickness on suprailiaca region. Fundal height (FH) was measured from the symphysis pubis to the midle of the upper border of the pregnant uterus. Accuracy of Risanto’s and Johnson’s formulas was dtermined by comparing the difference between EFW and actual infant birth weight (AIBW). Paired t-test was used for statistical analysis.

Result and Discussion: There were 395 overweight pregnant mothers fulfilling the inclusion and exclusion criteria. The mean AIBW was 3060.3 ± 322.5 grams (ranged from 2360 to 3940 grams). The mean EFW using Risanto formula (R_EFW) was 3095.8 ± 320.3 grams (ranged from 2370 to 3870 grams ) while that of Johnson (J_EFW) was 3273,7 ± 378,1 grams (ranged from 2325 to 4185 grams). The mean difference between between AIBW and ∆R) EFW (was 109.85 grams while that of AIBW and J_EFW∆J) (was 198.41 grams ∆.RIt was clear that significantly smaller ∆J than with the mean difference minus 88.56 grams (95% CI -98.76 to -78.35; p value 0.000).

Conclusion: The new Risanto’s formula was more accurate to estmate infant birth weight than Johnson’s in overweight mothers.


Keywords: Risanto’s and Johnson’s Formulas, Estimated Fetal Weight, Overweight Mothers.


Keywords


Risanto’s and Johnson’s Formulas; Estimated Fetal Weight; Overweight Mothers.



References

Challis K, Osman NB, Nordahl G, Bergstro S. The Impact of Adjustment for Parity and Mid-UpperArm Circumference on Sensitivity of SymphysisFundus Height Measurements to Predict SGA Foetuses in Mozambique. 2003;8(2):2003.

Kannieappan LM, Deussen AR, Grivell RM, Yelland L, Dodd JM. Developing a tool for obtaining maternal skinfold thickness measurements and assessing inter-observer variability among pregnant women who are overweight and obese. BMC Pregnancy Childbirth [Internet]. BMC Pregnancy and Childbirth; 2013;13(1):42. Available from: http://www.pubmedcentral. nih.gov/articlerender.fcgi?artid=3583701&tool= pmcentrez&rendertype=abstract

Neilson JP. Symphysis-fundal height measurement in pregnancy. Cochrane Database Syst Rev [Internet]. 2007;(4):CD000944. Available from: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi? cmd=Retrieve&db=PubMe d&dopt=Citation&list_ uids=10796225

Khani S, Ahmad-Shirvani M, Mohseni-Bandpei MA, Mohammadpour-Tahmtan RA. Comparison of abdominal palpation, Johnson’s technique and ultrasound in the estimation of fetal weight in Northern Iran. Midwifery. 2011;27(1):99–103.

Siswosudarmo R, Titisari I. Developing A New Formula for Estimating Birth. J Kesehat Reproduksi. 2014;1(2):145–9.

Titisari I, Siswosudarmo R. Risanto’s Formulas is More Accurate in Determining Estimated Fetal
Weight Based on Maternal Fundal Height. Indones J Obs Gynecol. 2013;1(3):149–51.

Accu-Measure Personal Body Fat Caliper Q & A Body Fat Q & A [Internet]. Available from: http://www.accumeasurefitness.com/uploads /5/0/4/3/50439275/accumeasure_fitness_3000_ instructions.pdf

Cunningham FG, Leveno KJ, Bloom SL, Hauth JC, Rouse DJ, Y C. Williams Obstetrics. 23rd ed. New York: McGraw Hill Medical; 2010.

Numprasert W. A Study in Johnson’s Formula: Fundal Height Measurement for Estimation of Birth Weight. Au JT. 2004;8(1):15–20.

Kopp-Hoolihan LE, van Loan MD, Wong WW, King JC. Fat mass deposition during pregnancy using a four-component model. J Appl Physiol (Bethesda, Md 1985). 1999;87(1):196–202.

Deeluea J, Sirichotiyakul S, Weerakiet S, Arora R, Patumanond J. Fundal height growth curve for underweight and overweight and obese pregnant women in Thai population. ISRN Obstet Gynecol [Internet]. 2013;2013:657692. Available from: http://www.pubmedcentral. nih.gov/articlerender. artid=3880769&tool=pmcentrez&rendertype=ab stract



DOI: https://doi.org/10.22146/jkr.13873

Article Metrics

Abstract views : 3361 | views : 2395

Refbacks

  • There are currently no refbacks.


Copyright (c) 2016 Jurnal Kesehatan Reproduksi



Jurnal Kesehatan Reproduksi Indexed by:

 

 



SEKRETARIAT JURNAL KESEHATAN REPRODUKSI
Departemen Obstetri dan Ginekologi, FK-KMK, UGM/RS Dr. Sardjito
Jl. Kesehatan No. 1, Sekip Utara, Yogyakarta 55281
Tlp: (0274) 511329 / Faks: (0274) 544003
Email: jurnal.kesehatanreproduksi@ugm.ac.id
Cp: Dwi Astuti +6281802698043