Prediction of discordant twins by real‐time ultrasonography combined with umbilical artery velocimetry
Objective To evaluate the role of umbilical Doppler velocimetry combined with ultrasonographic intertwin differences derived from estimated fetal weight, biparietal diameter, abdominal circumference and femur length as a comprehensive test for the prediction of discordancy. Methods The sets of twins...
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| Veröffentlicht in: | Ultrasound in obstetrics & gynecology 2000-02, Vol.15 (2), p.118-121 |
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| creator | Chittacharoen, A. Leelapattana, P. Rangsiprakarn, R. |
| description | Objective To evaluate the role of umbilical Doppler velocimetry combined with ultrasonographic intertwin differences derived from estimated fetal weight, biparietal diameter, abdominal circumference and femur length as a comprehensive test for the prediction of discordancy.
Methods The sets of twins were studied with real‐time ultrasonography for morphometric measurements and with duplex Doppler velocimetry for the S/D ratio of the umbilical artery in third trimester. The following cutoff values were used to indicate abnormal test results: Δ biparietal diameter > 6 mm, Δ abdominal circumference > 20 mm, Δ femur length > 5 mm, Δ estimated fetal weight > 15% and Δ systolic/diastolic ratio > 15%. Discordancy was identified when the birth weight difference exceeded 15%.
Results Among the 52 sets of twin pregnancies studied, 40 sets of twins fulfilled the study criteria. Thirteen sets of twins were discordant (32.5%) The mean gestational age at delivery was 37.15 ± 2.24 weeks (range 28–41 weeks). The diagnostic accuracy provided by ultrasonographic morphometries was not significantly different from that provided by umbilical Doppler velocimetry. Overall the best predictors appeared to be the presence of either Δ systolic/diastolic ratio > 15% or Δ estimated fetal weights > 15% with sensitivity and specificity values of 92% and 70%, respectively.
Conclusion Real‐time ultrasonography combined with umbilical artery velocimetry is useful in predicting discordant twins. |
| doi_str_mv | 10.1046/j.1469-0705.2000.00051.x |
| format | Article |
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Methods The sets of twins were studied with real‐time ultrasonography for morphometric measurements and with duplex Doppler velocimetry for the S/D ratio of the umbilical artery in third trimester. The following cutoff values were used to indicate abnormal test results: Δ biparietal diameter > 6 mm, Δ abdominal circumference > 20 mm, Δ femur length > 5 mm, Δ estimated fetal weight > 15% and Δ systolic/diastolic ratio > 15%. Discordancy was identified when the birth weight difference exceeded 15%.
Results Among the 52 sets of twin pregnancies studied, 40 sets of twins fulfilled the study criteria. Thirteen sets of twins were discordant (32.5%) The mean gestational age at delivery was 37.15 ± 2.24 weeks (range 28–41 weeks). The diagnostic accuracy provided by ultrasonographic morphometries was not significantly different from that provided by umbilical Doppler velocimetry. Overall the best predictors appeared to be the presence of either Δ systolic/diastolic ratio > 15% or Δ estimated fetal weights > 15% with sensitivity and specificity values of 92% and 70%, respectively.
Conclusion Real‐time ultrasonography combined with umbilical artery velocimetry is useful in predicting discordant twins.</description><identifier>ISSN: 0960-7692</identifier><identifier>EISSN: 1469-0705</identifier><identifier>DOI: 10.1046/j.1469-0705.2000.00051.x</identifier><identifier>PMID: 10775993</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Abdomen - diagnostic imaging ; Adult ; Anthropometry - methods ; Biological and medical sciences ; Blood Flow Velocity ; Diastole ; Discordancy ; Diseases in Twins - diagnosis ; Doppler velocimetry ; Female ; Femur - diagnostic imaging ; Fetal Growth Retardation - diagnostic imaging ; Fetal Growth Retardation - physiopathology ; Fetal Weight ; Gestational Age ; Gynecology. Andrology. Obstetrics ; Humans ; Management. Prenatal diagnosis ; Medical sciences ; Pregnancy ; Pregnancy Trimester, Third ; Pregnancy. Fetus. Placenta ; Reproducibility of Results ; Sensitivity and Specificity ; Systole ; Twin pregnancy ; Ultrasonography ; Ultrasonography, Doppler, Duplex - methods ; Ultrasonography, Prenatal - methods ; Umbilical Arteries - diagnostic imaging ; Umbilical Arteries - physiopathology</subject><ispartof>Ultrasound in obstetrics & gynecology, 2000-02, Vol.15 (2), p.118-121</ispartof><rights>2000 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4421-8839e2168d01d4a2c86eee0e4a051830b3a441ebd6253ec4a1d2a1b505b9dbcd3</citedby><cites>FETCH-LOGICAL-c4421-8839e2168d01d4a2c86eee0e4a051830b3a441ebd6253ec4a1d2a1b505b9dbcd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1046%2Fj.1469-0705.2000.00051.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1046%2Fj.1469-0705.2000.00051.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,1432,27923,27924,45573,45574,46408,46832</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1311320$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10775993$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chittacharoen, A.</creatorcontrib><creatorcontrib>Leelapattana, P.</creatorcontrib><creatorcontrib>Rangsiprakarn, R.</creatorcontrib><title>Prediction of discordant twins by real‐time ultrasonography combined with umbilical artery velocimetry</title><title>Ultrasound in obstetrics & gynecology</title><addtitle>Ultrasound Obstet Gynecol</addtitle><description>Objective To evaluate the role of umbilical Doppler velocimetry combined with ultrasonographic intertwin differences derived from estimated fetal weight, biparietal diameter, abdominal circumference and femur length as a comprehensive test for the prediction of discordancy.
Methods The sets of twins were studied with real‐time ultrasonography for morphometric measurements and with duplex Doppler velocimetry for the S/D ratio of the umbilical artery in third trimester. The following cutoff values were used to indicate abnormal test results: Δ biparietal diameter > 6 mm, Δ abdominal circumference > 20 mm, Δ femur length > 5 mm, Δ estimated fetal weight > 15% and Δ systolic/diastolic ratio > 15%. Discordancy was identified when the birth weight difference exceeded 15%.
Results Among the 52 sets of twin pregnancies studied, 40 sets of twins fulfilled the study criteria. Thirteen sets of twins were discordant (32.5%) The mean gestational age at delivery was 37.15 ± 2.24 weeks (range 28–41 weeks). The diagnostic accuracy provided by ultrasonographic morphometries was not significantly different from that provided by umbilical Doppler velocimetry. Overall the best predictors appeared to be the presence of either Δ systolic/diastolic ratio > 15% or Δ estimated fetal weights > 15% with sensitivity and specificity values of 92% and 70%, respectively.
Conclusion Real‐time ultrasonography combined with umbilical artery velocimetry is useful in predicting discordant twins.</description><subject>Abdomen - diagnostic imaging</subject><subject>Adult</subject><subject>Anthropometry - methods</subject><subject>Biological and medical sciences</subject><subject>Blood Flow Velocity</subject><subject>Diastole</subject><subject>Discordancy</subject><subject>Diseases in Twins - diagnosis</subject><subject>Doppler velocimetry</subject><subject>Female</subject><subject>Femur - diagnostic imaging</subject><subject>Fetal Growth Retardation - diagnostic imaging</subject><subject>Fetal Growth Retardation - physiopathology</subject><subject>Fetal Weight</subject><subject>Gestational Age</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Management. Prenatal diagnosis</subject><subject>Medical sciences</subject><subject>Pregnancy</subject><subject>Pregnancy Trimester, Third</subject><subject>Pregnancy. Fetus. Placenta</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Systole</subject><subject>Twin pregnancy</subject><subject>Ultrasonography</subject><subject>Ultrasonography, Doppler, Duplex - methods</subject><subject>Ultrasonography, Prenatal - methods</subject><subject>Umbilical Arteries - diagnostic imaging</subject><subject>Umbilical Arteries - physiopathology</subject><issn>0960-7692</issn><issn>1469-0705</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkM9u1DAQhy1ERZfCKyAfELcE_4uTiBOqSkGq1B7o2XLsWdYrJ15sh21uPALPyJPgZVfQYw_WyJrvN6P5EMKU1JQI-X5bUyH7irSkqRkhpC6vofXDM7T613iOVqSXpGplz87Ry5S2BZKCyxfonJK2bfqer9DmLoJ1Jrsw4bDG1iUTotVTxnnvpoSHBUfQ_vfPX9mNgGefo05hCt-i3m0WbMI4uAks3ru8wXP5eGe0xzpmiAv-AT6YkstxeYXO1toneH2qF-j-09XXy8_Vze31l8uPN5URgtGq63gPjMrOEmqFZqaTAEBA6HJgx8nAtRAUBitZw8EITS3TdGhIM_R2MJZfoHfHubsYvs-QshrLTeC9niDMSbW0SGC8KWB3BE0MKUVYq110o46LokQdLKutOshUB5nqYFn9taweSvTNacc8jGAfBY9aC_D2BOhUdKyjnoxL_zlOKWekYB-O2N55WJ68X93fXjeU_wHPl5q_</recordid><startdate>200002</startdate><enddate>200002</enddate><creator>Chittacharoen, A.</creator><creator>Leelapattana, P.</creator><creator>Rangsiprakarn, R.</creator><general>Blackwell Science 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>7X8</scope></search><sort><creationdate>200002</creationdate><title>Prediction of discordant twins by real‐time ultrasonography combined with umbilical artery velocimetry</title><author>Chittacharoen, A. ; Leelapattana, P. ; Rangsiprakarn, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4421-8839e2168d01d4a2c86eee0e4a051830b3a441ebd6253ec4a1d2a1b505b9dbcd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Abdomen - diagnostic imaging</topic><topic>Adult</topic><topic>Anthropometry - methods</topic><topic>Biological and medical sciences</topic><topic>Blood Flow Velocity</topic><topic>Diastole</topic><topic>Discordancy</topic><topic>Diseases in Twins - diagnosis</topic><topic>Doppler velocimetry</topic><topic>Female</topic><topic>Femur - diagnostic imaging</topic><topic>Fetal Growth Retardation - diagnostic imaging</topic><topic>Fetal Growth Retardation - physiopathology</topic><topic>Fetal Weight</topic><topic>Gestational Age</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Management. Prenatal diagnosis</topic><topic>Medical sciences</topic><topic>Pregnancy</topic><topic>Pregnancy Trimester, Third</topic><topic>Pregnancy. Fetus. Placenta</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Systole</topic><topic>Twin pregnancy</topic><topic>Ultrasonography</topic><topic>Ultrasonography, Doppler, Duplex - methods</topic><topic>Ultrasonography, Prenatal - methods</topic><topic>Umbilical Arteries - diagnostic imaging</topic><topic>Umbilical Arteries - physiopathology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chittacharoen, A.</creatorcontrib><creatorcontrib>Leelapattana, P.</creatorcontrib><creatorcontrib>Rangsiprakarn, R.</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>MEDLINE - Academic</collection><jtitle>Ultrasound in obstetrics & gynecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chittacharoen, A.</au><au>Leelapattana, P.</au><au>Rangsiprakarn, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prediction of discordant twins by real‐time ultrasonography combined with umbilical artery velocimetry</atitle><jtitle>Ultrasound in obstetrics & gynecology</jtitle><addtitle>Ultrasound Obstet Gynecol</addtitle><date>2000-02</date><risdate>2000</risdate><volume>15</volume><issue>2</issue><spage>118</spage><epage>121</epage><pages>118-121</pages><issn>0960-7692</issn><eissn>1469-0705</eissn><abstract>Objective To evaluate the role of umbilical Doppler velocimetry combined with ultrasonographic intertwin differences derived from estimated fetal weight, biparietal diameter, abdominal circumference and femur length as a comprehensive test for the prediction of discordancy.
Methods The sets of twins were studied with real‐time ultrasonography for morphometric measurements and with duplex Doppler velocimetry for the S/D ratio of the umbilical artery in third trimester. The following cutoff values were used to indicate abnormal test results: Δ biparietal diameter > 6 mm, Δ abdominal circumference > 20 mm, Δ femur length > 5 mm, Δ estimated fetal weight > 15% and Δ systolic/diastolic ratio > 15%. Discordancy was identified when the birth weight difference exceeded 15%.
Results Among the 52 sets of twin pregnancies studied, 40 sets of twins fulfilled the study criteria. Thirteen sets of twins were discordant (32.5%) The mean gestational age at delivery was 37.15 ± 2.24 weeks (range 28–41 weeks). The diagnostic accuracy provided by ultrasonographic morphometries was not significantly different from that provided by umbilical Doppler velocimetry. Overall the best predictors appeared to be the presence of either Δ systolic/diastolic ratio > 15% or Δ estimated fetal weights > 15% with sensitivity and specificity values of 92% and 70%, respectively.
Conclusion Real‐time ultrasonography combined with umbilical artery velocimetry is useful in predicting discordant twins.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><pmid>10775993</pmid><doi>10.1046/j.1469-0705.2000.00051.x</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; Wiley Free Content; EZB-FREE-00999 freely available EZB journals; Wiley Online Library All Journals |
| subjects | Abdomen - diagnostic imaging Adult Anthropometry - methods Biological and medical sciences Blood Flow Velocity Diastole Discordancy Diseases in Twins - diagnosis Doppler velocimetry Female Femur - diagnostic imaging Fetal Growth Retardation - diagnostic imaging Fetal Growth Retardation - physiopathology Fetal Weight Gestational Age Gynecology. Andrology. Obstetrics Humans Management. Prenatal diagnosis Medical sciences Pregnancy Pregnancy Trimester, Third Pregnancy. Fetus. Placenta Reproducibility of Results Sensitivity and Specificity Systole Twin pregnancy Ultrasonography Ultrasonography, Doppler, Duplex - methods Ultrasonography, Prenatal - methods Umbilical Arteries - diagnostic imaging Umbilical Arteries - physiopathology |
| title | Prediction of discordant twins by real‐time ultrasonography combined with umbilical artery velocimetry |
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