Clinical Versus Ultrasound Estimation of Fetal Weight

Raman, S.; Urquhart, Rennie; Yusof, Mohd Apandi

doi:10.1111/j.1479-828x.1992.tb01944.x

Cited by 38 publications

(33 citation statements)

References 8 publications

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“…Watson et all found no difference even at extremes of weight at term. 7 In another study by Chauhan et al in 1998 they found similar accuracy between clinical and ultrasonic methods except in birth weight <2.500 gms. Dudley used eleven ultrasonic prediction models and concluded that there was no preferred method and magnitude of errors were a major obstacle to confident use in clinical practice.…”

Section: Discussionmentioning

confidence: 94%

“…Many studies are available in literature comparing clinical methods and ultrasonic methods among themselves and with one another. [7][8][9] This study was an attempt to compare the accuracy of three clinical and three ultrasonic methods in Indian population. In a country like ours with diverse resource settings, the method with highest accuracy can be used depending on the available resource.…”

mentioning

confidence: 99%

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Comparison of three clinical and three ultrasonic equations in predicting fetal birth weight

Malik

Thakur

Agarwal

2016

Int J Reprod Contracept Obstet Gynecol

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Section: Discussionmentioning

confidence: 94%

mentioning

confidence: 99%

Comparison of three clinical and three ultrasonic equations in predicting fetal birth weight

Malik

Thakur

Agarwal

2016

Int J Reprod Contracept Obstet Gynecol

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“…Babies were weighed before they were fed and within one hour of delivery. 27 Each naked baby was placed supine on a tray placed in the middle of the Crown weighing scale placed on a sturdy flat table. The movement of the pointer of the weighing scale was observed till it settled and this was read to the nearest 100 grams 27 and then recorded as the baby's actual birth weight (ABW).…”

Section: Measurement Of Actual Birth Weights (Abw)mentioning

confidence: 99%

Correlation of ultrasonographic estimated fetal weight with actual birth weight in a tertiary hospital in Lagos, Nigeria.

et al. 2016

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Background: Sonographic fetal weight estimation is an important component of antenatal care. Aim: To sonographically estimate fetal weight at term and to compare estimated with actual birth weights to determine the validity of estimated fetal weights. Subjects and methods: In the prospective study, a convenience sample of 282 women was recruited. Ethical approval and informed consent of patients were obtained. An experienced sonographer estimated fetal weights by measuring BPD, HC, AC and FL using a scanner with Hadlock 3 weight estimation model. Actual birth weights were measured with a Crown weighing scale by a midwife. Data was analyzed with SPSS software version 17.0 while descriptive and inferential statistics were used to interpret results. Results were tested at error level set at p≤ 0.05. Results: Mean estimated and actual birth weights were 3378±40g and 3393±60g respectively. Difference between the two means was not significant. Eleven percent of fetuses were sonographically estimated to be microsomic while 14.5% were microsomic at birth; 12.1% were sonographically estimated to be macrosomic but 15.2% were macrosomic at birth. Most macrosomic fetuses were delivered through cesarean section(CS) and fetal weights increased with maternal age and parity. Conclusion: Sonographically estimated fetal weight using Hadlock 3 weight estimation model without validation correlated positively with actual birth weight in a Nigerian population.

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“…The percent of ultrasound predictions within 10% of the actual birth weight obtained in the present study (65%) is within the reported range (23-78%). 18 While some studies have indicated that ultrasound FWE is superior 19,20 or inferior 2,21 to clinical predictions, most have reported that the two methods have similar accuracy. 1,4,8,17,22 In the largest study comparing ultrasound versus clinical FWE, Chauhan et al 13 did not find significant differences in 460 patients at gestational ages of between 37 and 40 weeks.…”

Section: Discussionmentioning

confidence: 99%

“…Since the advent of ultrasound and its dissemination over the last three decades, and despite the lack of conclusive evidence, there has been a widespread belief that ultrasound is more accurate than other methods for predicting fetal weight. However, since 1990, several papers have reported that weight estimates using abdominal palpation and even the mother's opinion were as accurate as ultrasound FWE, [1][2][3][4] with the advantage of being inexpensive and available at any time.…”

Section: Introductionmentioning

confidence: 99%

Clinical formulas, mother's opinion and ultrasound in predicting birth weight

Torloni¹,

Sass²,

Sato³

et al. 2008

Sao Paulo Med. J.

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CONTEXT AND OBJECTIVE: Accurate fetal weight estimation is important for labor and delivery management. So far, there has not been any conclusive evidence to indicate that any technique for fetal weight estimation is superior to any other. Clinical formulas for fetal weight estimation are easy to use but have not been extensively studied in the literature. This study aimed to evaluate the accuracy of clinical formulas for fetal weight estimation compared to maternal and ultrasound estimates. DESIGN AND SETTING: Prospective study involving 100 full-term, cephalic, singleton pregnancies delivered within three days of fetal weight estimation. The setting was a tertiary public teaching hospital in São Paulo, Brazil. METHODS: Upon admission, the mother's opinion about fetal weight was recorded. Symphyseal-fundal height and abdominal girth were measured and two formulas were used to calculate fetal weight. An ultrasound scan was then performed by a specialist to estimate fetal weight. The four estimates were compared with the birth weight. The accuracy of the estimates was assessed by calculating the percentage that was within 10% of actual birth weight for each method. The chi-squared test was used for comparisons and p < 0.05 was considered significant. RESULTS: The birth weight was correctly estimated (Â± 10%) in 59%, 57%, 61%, and 65% of the cases using the mother's estimate, two clinical formulas, and ultrasound estimate, respectively. The accuracy of the four methods did not differ significantly. CONCLUSION: Clinical formulas for fetal weight prediction are as accurate as maternal and ultrasound estimates.

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Clinical Versus Ultrasound Estimation of Fetal Weight

Cited by 38 publications

References 8 publications

Comparison of three clinical and three ultrasonic equations in predicting fetal birth weight

Comparison of three clinical and three ultrasonic equations in predicting fetal birth weight

Correlation of ultrasonographic estimated fetal weight with actual birth weight in a tertiary hospital in Lagos, Nigeria.

Clinical formulas, mother's opinion and ultrasound in predicting birth weight

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