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Maternal uterine artery Doppler studies at high altitude and sea level
Objective To determine uterine artery impedance using Doppler in the second and third trimesters at sea level and at high altitude. Methods Uterine artery resistance and pulsatility indices (RI and PI, respectively) were obtained by Doppler velocimetry from 242 women in Cerro de Pasco (4300 m altitu...
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| Published in: | Ultrasound in obstetrics & gynecology 2001-12, Vol.18 (6), p.578-582 |
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| container_title | Ultrasound in obstetrics & gynecology |
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| creator | Krampl, E. R. Espinoza‐Dorado, J. Lees, C. C. Moscoso, G. Bland, J. M. Campbell, S. |
| description | Objective
To determine uterine artery impedance using Doppler in the second and third trimesters at sea level and at high altitude.
Methods
Uterine artery resistance and pulsatility indices (RI and PI, respectively) were obtained by Doppler velocimetry from 242 women in Cerro de Pasco (4300 m altitude) and 200 women in Lima (sea level), all with normal singleton pregnancies between 14 and 40 weeks of gestation. Impedance indices at high altitude and sea level were compared using fractional polynomial regression analysis.
Results
Impedance to uterine artery blood flow was lower at high altitude than at sea level (for PI ratio Lima/Cerro de Pasco = 1.06; P = 0.011). If gestation bands were compared, the difference was significant up to 25 weeks.
Conclusion
At high altitude, pregnancy is associated with lower uteroplacental impedance than at sea level. This may reflect a compensatory mechanism of uteroplacental development to lower oxygen tension associated with altitude.Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology |
| doi_str_mv | 10.1046/j.0960-7692.2001.00579.x |
| format | article |
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To determine uterine artery impedance using Doppler in the second and third trimesters at sea level and at high altitude.
Methods
Uterine artery resistance and pulsatility indices (RI and PI, respectively) were obtained by Doppler velocimetry from 242 women in Cerro de Pasco (4300 m altitude) and 200 women in Lima (sea level), all with normal singleton pregnancies between 14 and 40 weeks of gestation. Impedance indices at high altitude and sea level were compared using fractional polynomial regression analysis.
Results
Impedance to uterine artery blood flow was lower at high altitude than at sea level (for PI ratio Lima/Cerro de Pasco = 1.06; P = 0.011). If gestation bands were compared, the difference was significant up to 25 weeks.
Conclusion
At high altitude, pregnancy is associated with lower uteroplacental impedance than at sea level. This may reflect a compensatory mechanism of uteroplacental development to lower oxygen tension associated with altitude.Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology</description><identifier>ISSN: 0960-7692</identifier><identifier>EISSN: 1469-0705</identifier><identifier>DOI: 10.1046/j.0960-7692.2001.00579.x</identifier><identifier>PMID: 11844192</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Adult ; Altitude ; Biological and medical sciences ; Doppler ; Female ; Gestational Age ; Gynecology. Andrology. Obstetrics ; High altitude ; Humans ; Impedance ; Management. Prenatal diagnosis ; Medical sciences ; Placental Circulation ; Pregnancy ; Pregnancy. Fetus. Placenta ; Pulsatile Flow ; Ultrasonography, Doppler ; Ultrasonography, Prenatal ; Ultrasound ; Uterine artery ; Uterus - blood supply</subject><ispartof>Ultrasound in obstetrics & gynecology, 2001-12, Vol.18 (6), p.578-582</ispartof><rights>Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4892-520f619a6867b6c69009f52f8ddd75a09f8ab5d737947607fd50c44f4df8acc13</citedby></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.0960-7692.2001.00579.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1046%2Fj.0960-7692.2001.00579.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,786,790,1424,27957,27958,45609,45610,50923,51032</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14156481$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11844192$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Krampl, E. R.</creatorcontrib><creatorcontrib>Espinoza‐Dorado, J.</creatorcontrib><creatorcontrib>Lees, C. C.</creatorcontrib><creatorcontrib>Moscoso, G.</creatorcontrib><creatorcontrib>Bland, J. M.</creatorcontrib><creatorcontrib>Campbell, S.</creatorcontrib><title>Maternal uterine artery Doppler studies at high altitude and sea level</title><title>Ultrasound in obstetrics & gynecology</title><addtitle>Ultrasound Obstet Gynecol</addtitle><description>Objective
To determine uterine artery impedance using Doppler in the second and third trimesters at sea level and at high altitude.
Methods
Uterine artery resistance and pulsatility indices (RI and PI, respectively) were obtained by Doppler velocimetry from 242 women in Cerro de Pasco (4300 m altitude) and 200 women in Lima (sea level), all with normal singleton pregnancies between 14 and 40 weeks of gestation. Impedance indices at high altitude and sea level were compared using fractional polynomial regression analysis.
Results
Impedance to uterine artery blood flow was lower at high altitude than at sea level (for PI ratio Lima/Cerro de Pasco = 1.06; P = 0.011). If gestation bands were compared, the difference was significant up to 25 weeks.
Conclusion
At high altitude, pregnancy is associated with lower uteroplacental impedance than at sea level. This may reflect a compensatory mechanism of uteroplacental development to lower oxygen tension associated with altitude.Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology</description><subject>Adult</subject><subject>Altitude</subject><subject>Biological and medical sciences</subject><subject>Doppler</subject><subject>Female</subject><subject>Gestational Age</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>High altitude</subject><subject>Humans</subject><subject>Impedance</subject><subject>Management. Prenatal diagnosis</subject><subject>Medical sciences</subject><subject>Placental Circulation</subject><subject>Pregnancy</subject><subject>Pregnancy. Fetus. Placenta</subject><subject>Pulsatile Flow</subject><subject>Ultrasonography, Doppler</subject><subject>Ultrasonography, Prenatal</subject><subject>Ultrasound</subject><subject>Uterine artery</subject><subject>Uterus - blood supply</subject><issn>0960-7692</issn><issn>1469-0705</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOwzAQRS0EglL4BeQN7BLGiR-xxAYBBSRQN3RtubYDqdy02AnQv8elEWxZjR9nZq4OQphAToDyy0UOkkMmuCzyAoDkAEzI_GsPjQjlMgMBbB-NfqEjdBzjAgA4LfkhOiKkopTIYoQmz7pzodUe96k2rcM6pMMG367Wa-8Cjl1vGxex7vBb8_qGte-a9JS41uLoNPbuw_kTdFBrH93pUMdoNrl7uXnInqb3jzfXT5mhlSwyVkDNidS84mLODZcAsmZFXVlrBdPpUuk5s6IUkgoOorYMDKU1tenDGFKO0cVu7jqs3nsXO7VsonHe69at-qgEKSpaEZrAageasIoxuFqtQ7PUYaMIqK1DtVBbPWqrR20dqh-H6iu1ng07-vnS2b_GQVoCzgdAR6N9HXRrmvjHUcJ4CpG4qx332Xi3-XcANZveE1aU3wB0jAo</recordid><startdate>200112</startdate><enddate>200112</enddate><creator>Krampl, E. R.</creator><creator>Espinoza‐Dorado, J.</creator><creator>Lees, C. C.</creator><creator>Moscoso, G.</creator><creator>Bland, J. M.</creator><creator>Campbell, S.</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>200112</creationdate><title>Maternal uterine artery Doppler studies at high altitude and sea level</title><author>Krampl, E. R. ; Espinoza‐Dorado, J. ; Lees, C. C. ; Moscoso, G. ; Bland, J. M. ; Campbell, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4892-520f619a6867b6c69009f52f8ddd75a09f8ab5d737947607fd50c44f4df8acc13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Adult</topic><topic>Altitude</topic><topic>Biological and medical sciences</topic><topic>Doppler</topic><topic>Female</topic><topic>Gestational Age</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>High altitude</topic><topic>Humans</topic><topic>Impedance</topic><topic>Management. Prenatal diagnosis</topic><topic>Medical sciences</topic><topic>Placental Circulation</topic><topic>Pregnancy</topic><topic>Pregnancy. Fetus. Placenta</topic><topic>Pulsatile Flow</topic><topic>Ultrasonography, Doppler</topic><topic>Ultrasonography, Prenatal</topic><topic>Ultrasound</topic><topic>Uterine artery</topic><topic>Uterus - blood supply</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Krampl, E. R.</creatorcontrib><creatorcontrib>Espinoza‐Dorado, J.</creatorcontrib><creatorcontrib>Lees, C. C.</creatorcontrib><creatorcontrib>Moscoso, G.</creatorcontrib><creatorcontrib>Bland, J. M.</creatorcontrib><creatorcontrib>Campbell, S.</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>Krampl, E. R.</au><au>Espinoza‐Dorado, J.</au><au>Lees, C. C.</au><au>Moscoso, G.</au><au>Bland, J. M.</au><au>Campbell, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Maternal uterine artery Doppler studies at high altitude and sea level</atitle><jtitle>Ultrasound in obstetrics & gynecology</jtitle><addtitle>Ultrasound Obstet Gynecol</addtitle><date>2001-12</date><risdate>2001</risdate><volume>18</volume><issue>6</issue><spage>578</spage><epage>582</epage><pages>578-582</pages><issn>0960-7692</issn><eissn>1469-0705</eissn><notes>Presented at The Fetal Medicine Foundation's meeting on Research and Developments in Fetal Medicine, London, August 30th–September 1st 2001.</notes><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Objective
To determine uterine artery impedance using Doppler in the second and third trimesters at sea level and at high altitude.
Methods
Uterine artery resistance and pulsatility indices (RI and PI, respectively) were obtained by Doppler velocimetry from 242 women in Cerro de Pasco (4300 m altitude) and 200 women in Lima (sea level), all with normal singleton pregnancies between 14 and 40 weeks of gestation. Impedance indices at high altitude and sea level were compared using fractional polynomial regression analysis.
Results
Impedance to uterine artery blood flow was lower at high altitude than at sea level (for PI ratio Lima/Cerro de Pasco = 1.06; P = 0.011). If gestation bands were compared, the difference was significant up to 25 weeks.
Conclusion
At high altitude, pregnancy is associated with lower uteroplacental impedance than at sea level. This may reflect a compensatory mechanism of uteroplacental development to lower oxygen tension associated with altitude.Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><pmid>11844192</pmid><doi>10.1046/j.0960-7692.2001.00579.x</doi><tpages>5</tpages></addata></record> |
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| ispartof | Ultrasound in obstetrics & gynecology, 2001-12, Vol.18 (6), p.578-582 |
| issn | 0960-7692 1469-0705 |
| language | eng |
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| source | Wiley-Blackwell Journals; Wiley |
| subjects | Adult Altitude Biological and medical sciences Doppler Female Gestational Age Gynecology. Andrology. Obstetrics High altitude Humans Impedance Management. Prenatal diagnosis Medical sciences Placental Circulation Pregnancy Pregnancy. Fetus. Placenta Pulsatile Flow Ultrasonography, Doppler Ultrasonography, Prenatal Ultrasound Uterine artery Uterus - blood supply |
| title | Maternal uterine artery Doppler studies at high altitude and sea level |
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