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Maternal vitamin D deficiency and fetal distress/birth asphyxia: a population-based nested case-control study
Vitamin D deficiency causes not only skeletal problems but also muscle weakness, including heart muscle. If the fetal heart is also affected, it might be more susceptible to fetal distress and birth asphyxia. In this pilot study, we hypothesised that low maternal vitamin D levels are over-represente...
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Published in: | BMJ open 2016-01, Vol.6 (9), p.e009733-e009733 |
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creator | Lindqvist, Pelle G Silva, Aldo T Gustafsson, Sven A Gidlöf, Sebastian |
description | Vitamin D deficiency causes not only skeletal problems but also muscle weakness, including heart muscle. If the fetal heart is also affected, it might be more susceptible to fetal distress and birth asphyxia. In this pilot study, we hypothesised that low maternal vitamin D levels are over-represented in pregnancies with fetal distress/birth asphyxia.
A population-based nested case-control study.
Banked sera of 2496 women from the 12th week of pregnancy.
Vitamin D levels were analysed using a direct competitive chemiluminescence immunoassay. Vitamin D levels in early gestation in women delivered by emergency caesarean section due to suspected fetal distress were compared to those in controls. Birth asphyxia was defined as Apgar |
doi_str_mv | 10.1136/bmjopen-2015-009733 |
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A population-based nested case-control study.
Banked sera of 2496 women from the 12th week of pregnancy.
Vitamin D levels were analysed using a direct competitive chemiluminescence immunoassay. Vitamin D levels in early gestation in women delivered by emergency caesarean section due to suspected fetal distress were compared to those in controls. Birth asphyxia was defined as Apgar <7 at 5 min and/or umbilical cord pH≤7.15.
Vitamin D levels were significantly lower in mothers delivered by emergency caesarean section due to suspected fetal distress (n=53, 43.6±18 nmol/L) compared to controls (n=120, 48.6±19 nmol/L, p=0.04). Birth asphyxia was more common in women with vitamin D deficiency (n=95) in early pregnancy (OR 2.4, 95% CI 1.1 to 5.7).
Low vitamin D levels in early pregnancy may be associated with emergency caesarean section due to suspected fetal distress and birth asphyxia. If our findings are supported by further studies, preferably on severe birth asphyxia, vitamin D supplementation/sun exposure in pregnancy may lower the risk of subsequent birth asphyxia.</description><identifier>ISSN: 2044-6055</identifier><identifier>EISSN: 2044-6055</identifier><identifier>DOI: 10.1136/bmjopen-2015-009733</identifier><identifier>PMID: 27660312</identifier><language>eng</language><publisher>England: BMJ Publishing Group LTD</publisher><subject>Apgar score ; Birth weight ; Body mass index ; Cesarean section ; Gestational age ; Heart rate ; Medicin och hälsovetenskap ; Muscle strength ; Nutrition ; Obstetrics and Gynaecology ; Population ; Population-based studies ; Pregnancy ; Regression analysis ; Suffocation ; Umbilical cord ; Vagina ; Vitamin D ; Vitamin deficiency</subject><ispartof>BMJ open, 2016-01, Vol.6 (9), p.e009733-e009733</ispartof><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing</rights><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/ 2016 This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/ 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c521t-39accfc47b48634bc44a1d8ada2bdf07bd7f4d66bf97998615cfddf79f5dba393</citedby><cites>FETCH-LOGICAL-c521t-39accfc47b48634bc44a1d8ada2bdf07bd7f4d66bf97998615cfddf79f5dba393</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2663529345/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2663529345?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,3194,25753,27924,27925,37012,37013,44590,53791,53793,74998</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27660312$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttp://kipublications.ki.se/Default.aspx?queryparsed=id:134977904$$DView record from Swedish Publication Index$$Hfree_for_read</backlink></links><search><creatorcontrib>Lindqvist, Pelle G</creatorcontrib><creatorcontrib>Silva, Aldo T</creatorcontrib><creatorcontrib>Gustafsson, Sven A</creatorcontrib><creatorcontrib>Gidlöf, Sebastian</creatorcontrib><title>Maternal vitamin D deficiency and fetal distress/birth asphyxia: a population-based nested case-control study</title><title>BMJ open</title><addtitle>BMJ Open</addtitle><description>Vitamin D deficiency causes not only skeletal problems but also muscle weakness, including heart muscle. If the fetal heart is also affected, it might be more susceptible to fetal distress and birth asphyxia. In this pilot study, we hypothesised that low maternal vitamin D levels are over-represented in pregnancies with fetal distress/birth asphyxia.
A population-based nested case-control study.
Banked sera of 2496 women from the 12th week of pregnancy.
Vitamin D levels were analysed using a direct competitive chemiluminescence immunoassay. Vitamin D levels in early gestation in women delivered by emergency caesarean section due to suspected fetal distress were compared to those in controls. Birth asphyxia was defined as Apgar <7 at 5 min and/or umbilical cord pH≤7.15.
Vitamin D levels were significantly lower in mothers delivered by emergency caesarean section due to suspected fetal distress (n=53, 43.6±18 nmol/L) compared to controls (n=120, 48.6±19 nmol/L, p=0.04). Birth asphyxia was more common in women with vitamin D deficiency (n=95) in early pregnancy (OR 2.4, 95% CI 1.1 to 5.7).
Low vitamin D levels in early pregnancy may be associated with emergency caesarean section due to suspected fetal distress and birth asphyxia. If our findings are supported by further studies, preferably on severe birth asphyxia, vitamin D supplementation/sun exposure in pregnancy may lower the risk of subsequent birth asphyxia.</description><subject>Apgar score</subject><subject>Birth weight</subject><subject>Body mass index</subject><subject>Cesarean section</subject><subject>Gestational age</subject><subject>Heart rate</subject><subject>Medicin och hälsovetenskap</subject><subject>Muscle strength</subject><subject>Nutrition</subject><subject>Obstetrics and Gynaecology</subject><subject>Population</subject><subject>Population-based studies</subject><subject>Pregnancy</subject><subject>Regression analysis</subject><subject>Suffocation</subject><subject>Umbilical cord</subject><subject>Vagina</subject><subject>Vitamin D</subject><subject>Vitamin deficiency</subject><issn>2044-6055</issn><issn>2044-6055</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><recordid>eNp1UstuFDEQHCEQiUK-AAlZ4sJliN9ec0BC4SkFcYGz5SfrZWY82J7A_j0e7SYkSPjS3e6qstuurnuK4EuECL8w4y7NfuoxRKyHUApCHnSnGFLac8jYwzv5SXdeyg62RZlkDD_uTrDgHBKET7vxs64-T3oA17HqMU7gLXA-RBv9ZPdATw4EX1vbxVKzL-XCxFy3QJd5u_8d9SugwZzmZdA1pqk3ungHJl9qC7YVvU1TzWkApS5u_6R7FPRQ_PkxnnXf3r_7evmxv_ry4dPlm6veMoxqT6S2NlgqDN1wQo2lVCO30U5j4wIUxolAHecmSCHlhiNmg3NByMCc0USSs64_6JZffl6MmnMcdd6rpKM6bv1omVcMYoxXvPwvfs7J_SXdEBGhUggJaeO-PnAbYPTO-javHu5L3OtMcau-p-t2NkMEiybw4iiQ08-lPZ0aY7F-GPTk01IU2hDGCOKcNejzf6C7tKy_VxTmnLA2Cl1R5ICyOZWSfbi9DIJqdY86uket7lEH9zTWs7tz3HJuvEL-AMCwxtM</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Lindqvist, Pelle G</creator><creator>Silva, Aldo T</creator><creator>Gustafsson, Sven A</creator><creator>Gidlöf, Sebastian</creator><general>BMJ Publishing Group LTD</general><general>BMJ Publishing Group</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88G</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BTHHO</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>K9-</scope><scope>K9.</scope><scope>KB0</scope><scope>M0R</scope><scope>M0S</scope><scope>M1P</scope><scope>M2M</scope><scope>NAPCQ</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PSYQQ</scope><scope>Q9U</scope><scope>7X8</scope><scope>5PM</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8T</scope><scope>ZZAVC</scope></search><sort><creationdate>20160101</creationdate><title>Maternal vitamin D deficiency and fetal distress/birth asphyxia: a population-based nested case-control study</title><author>Lindqvist, Pelle G ; Silva, Aldo T ; Gustafsson, Sven A ; Gidlöf, Sebastian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c521t-39accfc47b48634bc44a1d8ada2bdf07bd7f4d66bf97998615cfddf79f5dba393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Apgar score</topic><topic>Birth weight</topic><topic>Body mass index</topic><topic>Cesarean section</topic><topic>Gestational age</topic><topic>Heart rate</topic><topic>Medicin och hälsovetenskap</topic><topic>Muscle strength</topic><topic>Nutrition</topic><topic>Obstetrics and Gynaecology</topic><topic>Population</topic><topic>Population-based studies</topic><topic>Pregnancy</topic><topic>Regression analysis</topic><topic>Suffocation</topic><topic>Umbilical cord</topic><topic>Vagina</topic><topic>Vitamin D</topic><topic>Vitamin deficiency</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lindqvist, Pelle G</creatorcontrib><creatorcontrib>Silva, Aldo T</creatorcontrib><creatorcontrib>Gustafsson, Sven A</creatorcontrib><creatorcontrib>Gidlöf, Sebastian</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Nursing & Allied Health Database</collection><collection>ProQuest Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Psychology Database (Alumni)</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>BMJ Journals</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>Consumer Health Database (Alumni Edition)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>ProQuest Consumer Health Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>PML(ProQuest Medical Library)</collection><collection>Psychology Database (ProQuest)</collection><collection>Nursing & Allied Health Premium</collection><collection>Publicly Available Content (ProQuest)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest One Psychology</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Freely available online</collection><collection>SwePub Articles full text</collection><jtitle>BMJ open</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lindqvist, Pelle G</au><au>Silva, Aldo T</au><au>Gustafsson, Sven A</au><au>Gidlöf, Sebastian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Maternal vitamin D deficiency and fetal distress/birth asphyxia: a population-based nested case-control study</atitle><jtitle>BMJ open</jtitle><addtitle>BMJ Open</addtitle><date>2016-01-01</date><risdate>2016</risdate><volume>6</volume><issue>9</issue><spage>e009733</spage><epage>e009733</epage><pages>e009733-e009733</pages><issn>2044-6055</issn><eissn>2044-6055</eissn><abstract>Vitamin D deficiency causes not only skeletal problems but also muscle weakness, including heart muscle. If the fetal heart is also affected, it might be more susceptible to fetal distress and birth asphyxia. In this pilot study, we hypothesised that low maternal vitamin D levels are over-represented in pregnancies with fetal distress/birth asphyxia.
A population-based nested case-control study.
Banked sera of 2496 women from the 12th week of pregnancy.
Vitamin D levels were analysed using a direct competitive chemiluminescence immunoassay. Vitamin D levels in early gestation in women delivered by emergency caesarean section due to suspected fetal distress were compared to those in controls. Birth asphyxia was defined as Apgar <7 at 5 min and/or umbilical cord pH≤7.15.
Vitamin D levels were significantly lower in mothers delivered by emergency caesarean section due to suspected fetal distress (n=53, 43.6±18 nmol/L) compared to controls (n=120, 48.6±19 nmol/L, p=0.04). Birth asphyxia was more common in women with vitamin D deficiency (n=95) in early pregnancy (OR 2.4, 95% CI 1.1 to 5.7).
Low vitamin D levels in early pregnancy may be associated with emergency caesarean section due to suspected fetal distress and birth asphyxia. If our findings are supported by further studies, preferably on severe birth asphyxia, vitamin D supplementation/sun exposure in pregnancy may lower the risk of subsequent birth asphyxia.</abstract><cop>England</cop><pub>BMJ Publishing Group LTD</pub><pmid>27660312</pmid><doi>10.1136/bmjopen-2015-009733</doi><oa>free_for_read</oa></addata></record> |
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subjects | Apgar score Birth weight Body mass index Cesarean section Gestational age Heart rate Medicin och hälsovetenskap Muscle strength Nutrition Obstetrics and Gynaecology Population Population-based studies Pregnancy Regression analysis Suffocation Umbilical cord Vagina Vitamin D Vitamin deficiency |
title | Maternal vitamin D deficiency and fetal distress/birth asphyxia: a population-based nested case-control study |
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