Examination of fetal nasal bone and repeatability of measurement in early pregnancy
Objective To evaluate the examination and measurement of fetal nasal bone at 10–14 weeks of gestation. Methods The study included 501 fetuses in 496 consecutive pregnant women attending for the routine first‐trimester ultrasound examination. The presence or absence of the fetal nasal bone was determ...
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| Veröffentlicht in: | Ultrasound in obstetrics & gynecology 2003-08, Vol.22 (2), p.131-134 |
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| creator | Kanellopoulos, V. Katsetos, C. Economides, D. L. |
| description | Objective
To evaluate the examination and measurement of fetal nasal bone at 10–14 weeks of gestation.
Methods
The study included 501 fetuses in 496 consecutive pregnant women attending for the routine first‐trimester ultrasound examination. The presence or absence of the fetal nasal bone was determined in the mid‐sagittal plane and the length was measured by one of four examiners (measurement A; n = 501). A second measurement was taken by the same examiner (B, n = 300) and a different examiner repeated the measurement (C, n = 200) whenever possible. Measurements were made to the nearest 0.1 mm. The duration of one hundred consecutive examinations was recorded, as was that of another 100 consecutive routine first‐trimester examinations without measuring the nasal bone.
Results
The median nasal bone length was 1.6 (0.8–2.4) mm, the median gestational age was 12 (10–14) weeks and the median crown–rump length (CRL) was 63 (32–90) mm. The fetal profile was examined in all 501 cases and the fetal nasal bone was present in all but one case (99.8%). No transvaginal scans were needed for the examination of nasal bone only. The average time for the sonographic examination (8.3 min) was not significantly different from the average time for first‐trimester scans in which the fetal nasal bone was not measured (8.0 min). The fetal nasal bone length increased from 1.1 mm at a CRL of 35 mm to 2.1 mm at a CRL of 90 mm (nasal bone = 0.016 × CRL + 0.619, P < 0.001, r = 0.655). The repeatability coefficient for intraobserver measurements was 0.080 mm and the coefficient for interobserver measurements was similar (0.083 mm).
Conclusions
The nasal bone can be detected from 10 weeks of gestation onwards. Consistent visualization and repeatable measurement of fetal nasal bone can be performed by an experienced sonographer in the first trimester without extending the length of time required for scanning or introducing the need for transvaginal sonography. Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/uog.177 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_73539294</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>73539294</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4077-8b0dd0b0e099ef9886dd26b694d60676cbd16538a144a79284b6dab1df8f02343</originalsourceid><addsrcrecordid>eNqF0U1L7TAQBuAgih4_8B9curm6kOqkTZNmKXL8AMGFui6TZiqRNj03adH-e3s8B1xd3MxsHt6Bdxg75XDJAbKrsX-75ErtsAUXUqegoNhlC9ASUiV1dsAOY3wHAClyuc8OeKahKEAs2PPyEzvncXC9T_omaWjANvEY52l6Twl6mwRaEQ5oXOuGaa06wjgG6sgPifMJYWinZBXozaOvp2O212Ab6WS7j9jr7fLl5j59fLp7uLl-TGsBSqWlAWvBAIHW1OiylNZm0kgtrASpZG0sl0VeIhcClc5KYaRFw21TNpDlIj9iZ5vcVej_jRSHqnOxprZFT_0YK5UXuc7075CXM5NKzfB8A-vQxxioqVbBdRimikO1Lrqai674t_yzjRxNR_bHbZudwd8twFhj24S5GRd_XAH5_Klidhcb9-Famv53r3p9uluf_QL_JJNR</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>18929677</pqid></control><display><type>article</type><title>Examination of fetal nasal bone and repeatability of measurement in early pregnancy</title><source>MEDLINE</source><source>Wiley Online Library Journals Frontfile Complete</source><source>Wiley Online Library Free Content</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><creator>Kanellopoulos, V. ; Katsetos, C. ; Economides, D. L.</creator><creatorcontrib>Kanellopoulos, V. ; Katsetos, C. ; Economides, D. L.</creatorcontrib><description>Objective
To evaluate the examination and measurement of fetal nasal bone at 10–14 weeks of gestation.
Methods
The study included 501 fetuses in 496 consecutive pregnant women attending for the routine first‐trimester ultrasound examination. The presence or absence of the fetal nasal bone was determined in the mid‐sagittal plane and the length was measured by one of four examiners (measurement A; n = 501). A second measurement was taken by the same examiner (B, n = 300) and a different examiner repeated the measurement (C, n = 200) whenever possible. Measurements were made to the nearest 0.1 mm. The duration of one hundred consecutive examinations was recorded, as was that of another 100 consecutive routine first‐trimester examinations without measuring the nasal bone.
Results
The median nasal bone length was 1.6 (0.8–2.4) mm, the median gestational age was 12 (10–14) weeks and the median crown–rump length (CRL) was 63 (32–90) mm. The fetal profile was examined in all 501 cases and the fetal nasal bone was present in all but one case (99.8%). No transvaginal scans were needed for the examination of nasal bone only. The average time for the sonographic examination (8.3 min) was not significantly different from the average time for first‐trimester scans in which the fetal nasal bone was not measured (8.0 min). The fetal nasal bone length increased from 1.1 mm at a CRL of 35 mm to 2.1 mm at a CRL of 90 mm (nasal bone = 0.016 × CRL + 0.619, P < 0.001, r = 0.655). The repeatability coefficient for intraobserver measurements was 0.080 mm and the coefficient for interobserver measurements was similar (0.083 mm).
Conclusions
The nasal bone can be detected from 10 weeks of gestation onwards. Consistent visualization and repeatable measurement of fetal nasal bone can be performed by an experienced sonographer in the first trimester without extending the length of time required for scanning or introducing the need for transvaginal sonography. Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd.</description><identifier>ISSN: 0960-7692</identifier><identifier>EISSN: 1469-0705</identifier><identifier>DOI: 10.1002/uog.177</identifier><identifier>PMID: 12905504</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Biological and medical sciences ; Crown-Rump Length ; Feasibility Studies ; Female ; Gestational Age ; Gynecology. Andrology. Obstetrics ; Humans ; interobserver variability ; intraobserver variability ; length ; Management. Prenatal diagnosis ; Medical sciences ; nasal bone ; Nasal Bone - anatomy & histology ; Nasal Bone - diagnostic imaging ; Nasal Bone - embryology ; Observer Variation ; Pregnancy ; Pregnancy. Fetus. Placenta ; repeatability ; Reproducibility of Results ; Time Factors ; Ultrasonography, Prenatal ; ultrasound</subject><ispartof>Ultrasound in obstetrics & gynecology, 2003-08, Vol.22 (2), p.131-134</ispartof><rights>Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd.</rights><rights>2004 INIST-CNRS</rights><rights>Copyright 2003 ISUOG. Published by John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4077-8b0dd0b0e099ef9886dd26b694d60676cbd16538a144a79284b6dab1df8f02343</citedby><cites>FETCH-LOGICAL-c4077-8b0dd0b0e099ef9886dd26b694d60676cbd16538a144a79284b6dab1df8f02343</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.177$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fuog.177$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,27901,27902,45550,45551,46384,46808</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15034695$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12905504$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kanellopoulos, V.</creatorcontrib><creatorcontrib>Katsetos, C.</creatorcontrib><creatorcontrib>Economides, D. L.</creatorcontrib><title>Examination of fetal nasal bone and repeatability of measurement in early pregnancy</title><title>Ultrasound in obstetrics & gynecology</title><addtitle>Ultrasound Obstet Gynecol</addtitle><description>Objective
To evaluate the examination and measurement of fetal nasal bone at 10–14 weeks of gestation.
Methods
The study included 501 fetuses in 496 consecutive pregnant women attending for the routine first‐trimester ultrasound examination. The presence or absence of the fetal nasal bone was determined in the mid‐sagittal plane and the length was measured by one of four examiners (measurement A; n = 501). A second measurement was taken by the same examiner (B, n = 300) and a different examiner repeated the measurement (C, n = 200) whenever possible. Measurements were made to the nearest 0.1 mm. The duration of one hundred consecutive examinations was recorded, as was that of another 100 consecutive routine first‐trimester examinations without measuring the nasal bone.
Results
The median nasal bone length was 1.6 (0.8–2.4) mm, the median gestational age was 12 (10–14) weeks and the median crown–rump length (CRL) was 63 (32–90) mm. The fetal profile was examined in all 501 cases and the fetal nasal bone was present in all but one case (99.8%). No transvaginal scans were needed for the examination of nasal bone only. The average time for the sonographic examination (8.3 min) was not significantly different from the average time for first‐trimester scans in which the fetal nasal bone was not measured (8.0 min). The fetal nasal bone length increased from 1.1 mm at a CRL of 35 mm to 2.1 mm at a CRL of 90 mm (nasal bone = 0.016 × CRL + 0.619, P < 0.001, r = 0.655). The repeatability coefficient for intraobserver measurements was 0.080 mm and the coefficient for interobserver measurements was similar (0.083 mm).
Conclusions
The nasal bone can be detected from 10 weeks of gestation onwards. Consistent visualization and repeatable measurement of fetal nasal bone can be performed by an experienced sonographer in the first trimester without extending the length of time required for scanning or introducing the need for transvaginal sonography. Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd.</description><subject>Biological and medical sciences</subject><subject>Crown-Rump Length</subject><subject>Feasibility Studies</subject><subject>Female</subject><subject>Gestational Age</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>interobserver variability</subject><subject>intraobserver variability</subject><subject>length</subject><subject>Management. Prenatal diagnosis</subject><subject>Medical sciences</subject><subject>nasal bone</subject><subject>Nasal Bone - anatomy & histology</subject><subject>Nasal Bone - diagnostic imaging</subject><subject>Nasal Bone - embryology</subject><subject>Observer Variation</subject><subject>Pregnancy</subject><subject>Pregnancy. Fetus. Placenta</subject><subject>repeatability</subject><subject>Reproducibility of Results</subject><subject>Time Factors</subject><subject>Ultrasonography, Prenatal</subject><subject>ultrasound</subject><issn>0960-7692</issn><issn>1469-0705</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0U1L7TAQBuAgih4_8B9curm6kOqkTZNmKXL8AMGFui6TZiqRNj03adH-e3s8B1xd3MxsHt6Bdxg75XDJAbKrsX-75ErtsAUXUqegoNhlC9ASUiV1dsAOY3wHAClyuc8OeKahKEAs2PPyEzvncXC9T_omaWjANvEY52l6Twl6mwRaEQ5oXOuGaa06wjgG6sgPifMJYWinZBXozaOvp2O212Ab6WS7j9jr7fLl5j59fLp7uLl-TGsBSqWlAWvBAIHW1OiylNZm0kgtrASpZG0sl0VeIhcClc5KYaRFw21TNpDlIj9iZ5vcVej_jRSHqnOxprZFT_0YK5UXuc7075CXM5NKzfB8A-vQxxioqVbBdRimikO1Lrqai674t_yzjRxNR_bHbZudwd8twFhj24S5GRd_XAH5_Klidhcb9-Famv53r3p9uluf_QL_JJNR</recordid><startdate>200308</startdate><enddate>200308</enddate><creator>Kanellopoulos, V.</creator><creator>Katsetos, C.</creator><creator>Economides, D. 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>200308</creationdate><title>Examination of fetal nasal bone and repeatability of measurement in early pregnancy</title><author>Kanellopoulos, V. ; Katsetos, C. ; Economides, D. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4077-8b0dd0b0e099ef9886dd26b694d60676cbd16538a144a79284b6dab1df8f02343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Biological and medical sciences</topic><topic>Crown-Rump Length</topic><topic>Feasibility Studies</topic><topic>Female</topic><topic>Gestational Age</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>interobserver variability</topic><topic>intraobserver variability</topic><topic>length</topic><topic>Management. Prenatal diagnosis</topic><topic>Medical sciences</topic><topic>nasal bone</topic><topic>Nasal Bone - anatomy & histology</topic><topic>Nasal Bone - diagnostic imaging</topic><topic>Nasal Bone - embryology</topic><topic>Observer Variation</topic><topic>Pregnancy</topic><topic>Pregnancy. Fetus. Placenta</topic><topic>repeatability</topic><topic>Reproducibility of Results</topic><topic>Time Factors</topic><topic>Ultrasonography, Prenatal</topic><topic>ultrasound</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kanellopoulos, V.</creatorcontrib><creatorcontrib>Katsetos, C.</creatorcontrib><creatorcontrib>Economides, D. 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>Kanellopoulos, V.</au><au>Katsetos, C.</au><au>Economides, D. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Examination of fetal nasal bone and repeatability of measurement in early pregnancy</atitle><jtitle>Ultrasound in obstetrics & gynecology</jtitle><addtitle>Ultrasound Obstet Gynecol</addtitle><date>2003-08</date><risdate>2003</risdate><volume>22</volume><issue>2</issue><spage>131</spage><epage>134</epage><pages>131-134</pages><issn>0960-7692</issn><eissn>1469-0705</eissn><abstract>Objective
To evaluate the examination and measurement of fetal nasal bone at 10–14 weeks of gestation.
Methods
The study included 501 fetuses in 496 consecutive pregnant women attending for the routine first‐trimester ultrasound examination. The presence or absence of the fetal nasal bone was determined in the mid‐sagittal plane and the length was measured by one of four examiners (measurement A; n = 501). A second measurement was taken by the same examiner (B, n = 300) and a different examiner repeated the measurement (C, n = 200) whenever possible. Measurements were made to the nearest 0.1 mm. The duration of one hundred consecutive examinations was recorded, as was that of another 100 consecutive routine first‐trimester examinations without measuring the nasal bone.
Results
The median nasal bone length was 1.6 (0.8–2.4) mm, the median gestational age was 12 (10–14) weeks and the median crown–rump length (CRL) was 63 (32–90) mm. The fetal profile was examined in all 501 cases and the fetal nasal bone was present in all but one case (99.8%). No transvaginal scans were needed for the examination of nasal bone only. The average time for the sonographic examination (8.3 min) was not significantly different from the average time for first‐trimester scans in which the fetal nasal bone was not measured (8.0 min). The fetal nasal bone length increased from 1.1 mm at a CRL of 35 mm to 2.1 mm at a CRL of 90 mm (nasal bone = 0.016 × CRL + 0.619, P < 0.001, r = 0.655). The repeatability coefficient for intraobserver measurements was 0.080 mm and the coefficient for interobserver measurements was similar (0.083 mm).
Conclusions
The nasal bone can be detected from 10 weeks of gestation onwards. Consistent visualization and repeatable measurement of fetal nasal bone can be performed by an experienced sonographer in the first trimester without extending the length of time required for scanning or introducing the need for transvaginal sonography. Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><pmid>12905504</pmid><doi>10.1002/uog.177</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Ultrasound in obstetrics & gynecology, 2003-08, Vol.22 (2), p.131-134 |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Biological and medical sciences Crown-Rump Length Feasibility Studies Female Gestational Age Gynecology. Andrology. Obstetrics Humans interobserver variability intraobserver variability length Management. Prenatal diagnosis Medical sciences nasal bone Nasal Bone - anatomy & histology Nasal Bone - diagnostic imaging Nasal Bone - embryology Observer Variation Pregnancy Pregnancy. Fetus. Placenta repeatability Reproducibility of Results Time Factors Ultrasonography, Prenatal ultrasound |
| title | Examination of fetal nasal bone and repeatability of measurement in early pregnancy |
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