Macrosomia: a new formula for optimized fetal weight estimation
Objectives To develop and test a specific formula for estimating weight in the macrosomic fetus. Methods Ultrasound estimations of fetal weight were carried out within 1 week of delivery in 424 singleton fetuses with a birth weight of ≥ 4000 g. Exclusion criteria were multiple pregnancy, intrauterin...
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| Veröffentlicht in: | Ultrasound in obstetrics & gynecology 2010-01, Vol.35 (1), p.42-47 |
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| container_title | Ultrasound in obstetrics & gynecology |
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| creator | Hart, N. C. Hilbert, A. Meurer, B. Schrauder, M. Schmid, M. Siemer, J. Voigt, M. Schild, R. L. |
| description | Objectives
To develop and test a specific formula for estimating weight in the macrosomic fetus.
Methods
Ultrasound estimations of fetal weight were carried out within 1 week of delivery in 424 singleton fetuses with a birth weight of ≥ 4000 g. Exclusion criteria were multiple pregnancy, intrauterine death and major structural or chromosomal anomalies. Stepwise regression modeling was used to derive a prediction formula with birth weight as the dependent variable and maternal booking weight and fetal biometric measurements as independent parameters. After a new formula for estimated fetal weight (EFW) had been developed in a formula‐finding group (n = 284), it was compared with commonly used weight equations (evaluation group, n = 140).
Results
The new formula (logeEFW = 7.6377445039 + 0.0002951035 × maternal weight + 0.0003949464 × head circumference + 0.0005241529 × abdominal circumference + 0.0048698624 × femur length) proved to be superior to established equations, with the smallest mean error (mean ± SD, −10 ± 202 g), the smallest mean percentage error (mean ± SD, −0.03 ± 4.6%) and the lowest mean absolute percentage error (3.69 (range, 0.05–13.57)%) when studied in the evaluation group. With the new formula, 77.9% of estimates fell within ± 5% of the actual weight at birth, 97.1% within ± 10%, and 100% within ± 15% and ± 20%.
Conclusions
The new formula allows better weight estimation in the macrosomic fetus. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/uog.7493 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_733856873</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>733856873</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3833-e480144838e8c1f06fe10d88fe772c2247187bd38f47c76971bbb5c67eae18663</originalsourceid><addsrcrecordid>eNp9kFFLwzAUhYMobk7BXyB9EX3pTJosSX0RGTqFyV7cc0nTmxlpl9m0jPnrTd10T_pwOXD5OOfeg9A5wUOCcXLTusVQsJQeoD5hPI2xwKND1Mcpx7HgadJDJ96_Y4w5o_wY9RKMKQvTR3cvStfOu8qq20hFS1hHxtVVW6pOI7dqbGU_oYgMNKqM1mAXb00EPqxVY93yFB0ZVXo42-kAzR8fXsdP8XQ2eR7fT2NNJaUxMIkJY5JKkJoYzA0QXEhpQIhEJwkTRIq8oNIwocPFguR5PtJcgAIiOacDdLX1XdXuow35WWW9hrJUS3CtzwSlcsRlkAG6_pckmIjgLyTZo10FvgaTrerwV70JUNYVm4Vis67YgF7sXNu8guIX_GkyAJc7QHmtSlOrpbZ-zyVJeJF3mfGWW9sSNn8GZvPZ5Dv4C5NcjNI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1017971781</pqid></control><display><type>article</type><title>Macrosomia: a new formula for optimized fetal weight estimation</title><source>MEDLINE</source><source>Wiley Online Library Journals Frontfile Complete</source><source>Wiley Online Library Free Content</source><source>EZB Electronic Journals Library</source><creator>Hart, N. C. ; Hilbert, A. ; Meurer, B. ; Schrauder, M. ; Schmid, M. ; Siemer, J. ; Voigt, M. ; Schild, R. L.</creator><creatorcontrib>Hart, N. C. ; Hilbert, A. ; Meurer, B. ; Schrauder, M. ; Schmid, M. ; Siemer, J. ; Voigt, M. ; Schild, R. L.</creatorcontrib><description>Objectives
To develop and test a specific formula for estimating weight in the macrosomic fetus.
Methods
Ultrasound estimations of fetal weight were carried out within 1 week of delivery in 424 singleton fetuses with a birth weight of ≥ 4000 g. Exclusion criteria were multiple pregnancy, intrauterine death and major structural or chromosomal anomalies. Stepwise regression modeling was used to derive a prediction formula with birth weight as the dependent variable and maternal booking weight and fetal biometric measurements as independent parameters. After a new formula for estimated fetal weight (EFW) had been developed in a formula‐finding group (n = 284), it was compared with commonly used weight equations (evaluation group, n = 140).
Results
The new formula (logeEFW = 7.6377445039 + 0.0002951035 × maternal weight + 0.0003949464 × head circumference + 0.0005241529 × abdominal circumference + 0.0048698624 × femur length) proved to be superior to established equations, with the smallest mean error (mean ± SD, −10 ± 202 g), the smallest mean percentage error (mean ± SD, −0.03 ± 4.6%) and the lowest mean absolute percentage error (3.69 (range, 0.05–13.57)%) when studied in the evaluation group. With the new formula, 77.9% of estimates fell within ± 5% of the actual weight at birth, 97.1% within ± 10%, and 100% within ± 15% and ± 20%.
Conclusions
The new formula allows better weight estimation in the macrosomic fetus. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.</description><identifier>ISSN: 0960-7692</identifier><identifier>ISSN: 1469-0705</identifier><identifier>EISSN: 1469-0705</identifier><identifier>DOI: 10.1002/uog.7493</identifier><identifier>PMID: 20034003</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Algorithms ; Biological and medical sciences ; Biometrics ; Biometry - methods ; Birth weight ; Birth Weight - physiology ; Diseases of mother, fetus and pregnancy ; Female ; Femur ; fetal biometry ; Fetal Macrosomia - diagnostic imaging ; fetal weight ; Fetal Weight - physiology ; Fetuses ; Gestational Age ; Gynecology ; Gynecology. Andrology. Obstetrics ; Humans ; Infant, Newborn ; macrosomia ; Male ; Mathematical models ; Medical sciences ; Obstetrics ; Predictive Value of Tests ; Pregnancy ; Pregnancy. Fetus. Placenta ; Reference Values ; regression formula ; Ultrasonography, Prenatal - methods ; Ultrasound</subject><ispartof>Ultrasound in obstetrics & gynecology, 2010-01, Vol.35 (1), p.42-47</ispartof><rights>Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3833-e480144838e8c1f06fe10d88fe772c2247187bd38f47c76971bbb5c67eae18663</citedby><cites>FETCH-LOGICAL-c3833-e480144838e8c1f06fe10d88fe772c2247187bd38f47c76971bbb5c67eae18663</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fuog.7493$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fuog.7493$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,4024,27923,27924,27925,45574,45575,46409,46833</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22271861$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20034003$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hart, N. C.</creatorcontrib><creatorcontrib>Hilbert, A.</creatorcontrib><creatorcontrib>Meurer, B.</creatorcontrib><creatorcontrib>Schrauder, M.</creatorcontrib><creatorcontrib>Schmid, M.</creatorcontrib><creatorcontrib>Siemer, J.</creatorcontrib><creatorcontrib>Voigt, M.</creatorcontrib><creatorcontrib>Schild, R. L.</creatorcontrib><title>Macrosomia: a new formula for optimized fetal weight estimation</title><title>Ultrasound in obstetrics & gynecology</title><addtitle>Ultrasound Obstet Gynecol</addtitle><description>Objectives
To develop and test a specific formula for estimating weight in the macrosomic fetus.
Methods
Ultrasound estimations of fetal weight were carried out within 1 week of delivery in 424 singleton fetuses with a birth weight of ≥ 4000 g. Exclusion criteria were multiple pregnancy, intrauterine death and major structural or chromosomal anomalies. Stepwise regression modeling was used to derive a prediction formula with birth weight as the dependent variable and maternal booking weight and fetal biometric measurements as independent parameters. After a new formula for estimated fetal weight (EFW) had been developed in a formula‐finding group (n = 284), it was compared with commonly used weight equations (evaluation group, n = 140).
Results
The new formula (logeEFW = 7.6377445039 + 0.0002951035 × maternal weight + 0.0003949464 × head circumference + 0.0005241529 × abdominal circumference + 0.0048698624 × femur length) proved to be superior to established equations, with the smallest mean error (mean ± SD, −10 ± 202 g), the smallest mean percentage error (mean ± SD, −0.03 ± 4.6%) and the lowest mean absolute percentage error (3.69 (range, 0.05–13.57)%) when studied in the evaluation group. With the new formula, 77.9% of estimates fell within ± 5% of the actual weight at birth, 97.1% within ± 10%, and 100% within ± 15% and ± 20%.
Conclusions
The new formula allows better weight estimation in the macrosomic fetus. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.</description><subject>Algorithms</subject><subject>Biological and medical sciences</subject><subject>Biometrics</subject><subject>Biometry - methods</subject><subject>Birth weight</subject><subject>Birth Weight - physiology</subject><subject>Diseases of mother, fetus and pregnancy</subject><subject>Female</subject><subject>Femur</subject><subject>fetal biometry</subject><subject>Fetal Macrosomia - diagnostic imaging</subject><subject>fetal weight</subject><subject>Fetal Weight - physiology</subject><subject>Fetuses</subject><subject>Gestational Age</subject><subject>Gynecology</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Infant, Newborn</subject><subject>macrosomia</subject><subject>Male</subject><subject>Mathematical models</subject><subject>Medical sciences</subject><subject>Obstetrics</subject><subject>Predictive Value of Tests</subject><subject>Pregnancy</subject><subject>Pregnancy. Fetus. Placenta</subject><subject>Reference Values</subject><subject>regression formula</subject><subject>Ultrasonography, Prenatal - methods</subject><subject>Ultrasound</subject><issn>0960-7692</issn><issn>1469-0705</issn><issn>1469-0705</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kFFLwzAUhYMobk7BXyB9EX3pTJosSX0RGTqFyV7cc0nTmxlpl9m0jPnrTd10T_pwOXD5OOfeg9A5wUOCcXLTusVQsJQeoD5hPI2xwKND1Mcpx7HgadJDJ96_Y4w5o_wY9RKMKQvTR3cvStfOu8qq20hFS1hHxtVVW6pOI7dqbGU_oYgMNKqM1mAXb00EPqxVY93yFB0ZVXo42-kAzR8fXsdP8XQ2eR7fT2NNJaUxMIkJY5JKkJoYzA0QXEhpQIhEJwkTRIq8oNIwocPFguR5PtJcgAIiOacDdLX1XdXuow35WWW9hrJUS3CtzwSlcsRlkAG6_pckmIjgLyTZo10FvgaTrerwV70JUNYVm4Vis67YgF7sXNu8guIX_GkyAJc7QHmtSlOrpbZ-zyVJeJF3mfGWW9sSNn8GZvPZ5Dv4C5NcjNI</recordid><startdate>201001</startdate><enddate>201001</enddate><creator>Hart, N. C.</creator><creator>Hilbert, A.</creator><creator>Meurer, B.</creator><creator>Schrauder, M.</creator><creator>Schmid, M.</creator><creator>Siemer, J.</creator><creator>Voigt, M.</creator><creator>Schild, R. L.</creator><general>John Wiley & Sons, Ltd</general><general>Wiley</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>201001</creationdate><title>Macrosomia: a new formula for optimized fetal weight estimation</title><author>Hart, N. C. ; Hilbert, A. ; Meurer, B. ; Schrauder, M. ; Schmid, M. ; Siemer, J. ; Voigt, M. ; Schild, R. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3833-e480144838e8c1f06fe10d88fe772c2247187bd38f47c76971bbb5c67eae18663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Algorithms</topic><topic>Biological and medical sciences</topic><topic>Biometrics</topic><topic>Biometry - methods</topic><topic>Birth weight</topic><topic>Birth Weight - physiology</topic><topic>Diseases of mother, fetus and pregnancy</topic><topic>Female</topic><topic>Femur</topic><topic>fetal biometry</topic><topic>Fetal Macrosomia - diagnostic imaging</topic><topic>fetal weight</topic><topic>Fetal Weight - physiology</topic><topic>Fetuses</topic><topic>Gestational Age</topic><topic>Gynecology</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Infant, Newborn</topic><topic>macrosomia</topic><topic>Male</topic><topic>Mathematical models</topic><topic>Medical sciences</topic><topic>Obstetrics</topic><topic>Predictive Value of Tests</topic><topic>Pregnancy</topic><topic>Pregnancy. Fetus. Placenta</topic><topic>Reference Values</topic><topic>regression formula</topic><topic>Ultrasonography, Prenatal - methods</topic><topic>Ultrasound</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hart, N. C.</creatorcontrib><creatorcontrib>Hilbert, A.</creatorcontrib><creatorcontrib>Meurer, B.</creatorcontrib><creatorcontrib>Schrauder, M.</creatorcontrib><creatorcontrib>Schmid, M.</creatorcontrib><creatorcontrib>Siemer, J.</creatorcontrib><creatorcontrib>Voigt, M.</creatorcontrib><creatorcontrib>Schild, R. L.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Ultrasound in obstetrics & gynecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hart, N. C.</au><au>Hilbert, A.</au><au>Meurer, B.</au><au>Schrauder, M.</au><au>Schmid, M.</au><au>Siemer, J.</au><au>Voigt, M.</au><au>Schild, R. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Macrosomia: a new formula for optimized fetal weight estimation</atitle><jtitle>Ultrasound in obstetrics & gynecology</jtitle><addtitle>Ultrasound Obstet Gynecol</addtitle><date>2010-01</date><risdate>2010</risdate><volume>35</volume><issue>1</issue><spage>42</spage><epage>47</epage><pages>42-47</pages><issn>0960-7692</issn><issn>1469-0705</issn><eissn>1469-0705</eissn><abstract>Objectives
To develop and test a specific formula for estimating weight in the macrosomic fetus.
Methods
Ultrasound estimations of fetal weight were carried out within 1 week of delivery in 424 singleton fetuses with a birth weight of ≥ 4000 g. Exclusion criteria were multiple pregnancy, intrauterine death and major structural or chromosomal anomalies. Stepwise regression modeling was used to derive a prediction formula with birth weight as the dependent variable and maternal booking weight and fetal biometric measurements as independent parameters. After a new formula for estimated fetal weight (EFW) had been developed in a formula‐finding group (n = 284), it was compared with commonly used weight equations (evaluation group, n = 140).
Results
The new formula (logeEFW = 7.6377445039 + 0.0002951035 × maternal weight + 0.0003949464 × head circumference + 0.0005241529 × abdominal circumference + 0.0048698624 × femur length) proved to be superior to established equations, with the smallest mean error (mean ± SD, −10 ± 202 g), the smallest mean percentage error (mean ± SD, −0.03 ± 4.6%) and the lowest mean absolute percentage error (3.69 (range, 0.05–13.57)%) when studied in the evaluation group. With the new formula, 77.9% of estimates fell within ± 5% of the actual weight at birth, 97.1% within ± 10%, and 100% within ± 15% and ± 20%.
Conclusions
The new formula allows better weight estimation in the macrosomic fetus. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><pmid>20034003</pmid><doi>10.1002/uog.7493</doi><tpages>6</tpages></addata></record> |
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| language | eng |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; EZB Electronic Journals Library |
| subjects | Algorithms Biological and medical sciences Biometrics Biometry - methods Birth weight Birth Weight - physiology Diseases of mother, fetus and pregnancy Female Femur fetal biometry Fetal Macrosomia - diagnostic imaging fetal weight Fetal Weight - physiology Fetuses Gestational Age Gynecology Gynecology. Andrology. Obstetrics Humans Infant, Newborn macrosomia Male Mathematical models Medical sciences Obstetrics Predictive Value of Tests Pregnancy Pregnancy. Fetus. Placenta Reference Values regression formula Ultrasonography, Prenatal - methods Ultrasound |
| title | Macrosomia: a new formula for optimized fetal weight estimation |
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