{"id":"https://openalex.org/W2054240804","doi":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","title":"Magnesium Sulfate Compared With Nifedipine for Acute Tocolysis of Preterm Labor: A Randomized-controlled Trial","display_name":"Magnesium Sulfate Compared With Nifedipine for Acute Tocolysis of Preterm Labor: A Randomized-controlled Trial","publication_year":2008,"publication_date":"2008-03-01","ids":{"openalex":"https://openalex.org/W2054240804","doi":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","mag":"2054240804"},"language":"en","primary_location":{"id":"doi:10.1097/01.aoa.0000308303.37026.11","doi":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","is_oa":false,"landing_page_url":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","pdf_url":null,"source":{"id":"https://openalex.org/S12168194","display_name":"Obstetric Anesthesia Digest","issn_l":"0275-665X","issn":["0275-665X","1536-5395"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310315671","host_organization_name":"Lippincott Williams & Wilkins","host_organization_lineage":["https://openalex.org/P4310315671","https://openalex.org/P4310318547"],"host_organization_lineage_names":["Lippincott Williams & Wilkins","Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Obstetric Anesthesia Digest","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5047058462","display_name":"Deirdre J. Lyell","orcid":"https://orcid.org/0000-0002-6853-9956","observed_orcids":["https://orcid.org/0000-0002-6853-9956"]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D.J. Lyell","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031460764","display_name":"Kristin M. Pullen","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"K. Pullen","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101470692","display_name":"Laura Campbell","orcid":"https://orcid.org/0000-0003-2593-8006","observed_orcids":["https://orcid.org/0000-0003-2593-8006"]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"L. Campbell","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004849170","display_name":"Suzanne Ching","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"S. Ching","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018824137","display_name":"Maurice L. Druzin","orcid":"https://orcid.org/0000-0001-7185-6664","observed_orcids":["https://orcid.org/0000-0001-7185-6664"]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M.L. Druzin","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060183185","display_name":"Usha Chitkara","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"U. Chitkara","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024513647","display_name":"Demetra Burrs","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D. Burrs","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109063330","display_name":"Aaron Brandon Caughey","orcid":"https://orcid.org/0000-0002-1752-0972","observed_orcids":["https://orcid.org/0000-0002-1752-0972"]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A.B. Caughey","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108398722","display_name":"Yasser Yehia El-Sayed","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334016132","display_name":"Lucile Packard Children's Hospital","ror":"https://ror.org/05a25vm86","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1334016132","https://openalex.org/I4210137306","https://openalex.org/I97018004"]},{"id":"https://openalex.org/I4210137306","display_name":"Stanford Medicine","ror":"https://ror.org/03mtd9a03","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210137306","https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Y.Y. El-Sayed","raw_affiliation_strings":["Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Obstetrics and Gynecology, Lucile S. Packard Children's Hospital, Stanford University Medical Center, Stanford, CA","institution_ids":["https://openalex.org/I1334016132","https://openalex.org/I4210137306"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.4636,"has_fulltext":false,"cited_by_count":18,"citation_normalized_percentile":{"value":0.88016864,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":"28","issue":"1","first_page":"21","last_page":"22"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11290","display_name":"Preterm Birth and Chorioamnionitis","score":0.9848999977111816,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11290","display_name":"Preterm Birth and Chorioamnionitis","score":0.9848999977111816,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10453","display_name":"Maternal and Perinatal Health Interventions","score":0.00419999985024333,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11964","display_name":"Pregnancy and Medication Impact","score":0.002199999988079071,"subfield":{"id":"https://openalex.org/subfields/2739","display_name":"Public Health, Environmental and Occupational Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/magnesium-sulfate","display_name":"magnesium sulfate","score":0.996999979019165},{"id":"https://openalex.org/keywords/nifedipine","display_name":"nifedipine","score":1.0},{"id":"https://openalex.org/keywords/tocolysis","display_name":"tocolysis","score":0.8949999809265137},{"id":"https://openalex.org/keywords/preterm-labor","display_name":"preterm labor","score":0.9929999709129333},{"id":"https://openalex.org/keywords/preterm-birth-prevention","display_name":"preterm birth prevention","score":0.7699999809265137},{"id":"https://openalex.org/keywords/calcium-channel-blockers","display_name":"calcium channel blockers","score":0.597000002861023},{"id":"https://openalex.org/keywords/randomized-controlled-trials","display_name":"randomized controlled trials","score":0.6470000147819519}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9312872886657715},{"id":"https://openalex.org/C2779066535","wikidata":"https://www.wikidata.org/wiki/Q39111","display_name":"Nifedipine","level":3,"score":0.8558688163757324},{"id":"https://openalex.org/C3019152611","wikidata":"https://www.wikidata.org/wiki/Q625506","display_name":"Preterm labor","level":4,"score":0.6949732303619385},{"id":"https://openalex.org/C168563851","wikidata":"https://www.wikidata.org/wiki/Q1436668","display_name":"Randomized controlled trial","level":2,"score":0.5281974077224731},{"id":"https://openalex.org/C2909151182","wikidata":"https://www.wikidata.org/wiki/Q625506","display_name":"Preterm labour","level":4,"score":0.5021836757659912},{"id":"https://openalex.org/C543218039","wikidata":"https://www.wikidata.org/wiki/Q660","display_name":"Magnesium","level":2,"score":0.4377155303955078},{"id":"https://openalex.org/C42219234","wikidata":"https://www.wikidata.org/wiki/Q131130","display_name":"Anesthesia","level":1,"score":0.3699290454387665},{"id":"https://openalex.org/C131872663","wikidata":"https://www.wikidata.org/wiki/Q5284418","display_name":"Obstetrics","level":1,"score":0.32813218235969543},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.17109528183937073},{"id":"https://openalex.org/C46973012","wikidata":"https://www.wikidata.org/wiki/Q28627","display_name":"Gestation","level":3,"score":0.13738083839416504},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.11947482824325562},{"id":"https://openalex.org/C519063684","wikidata":"https://www.wikidata.org/wiki/Q706","display_name":"Calcium","level":2,"score":0.07848042249679565},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1097/01.aoa.0000308303.37026.11","doi":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","is_oa":false,"landing_page_url":"https://doi.org/10.1097/01.aoa.0000308303.37026.11","pdf_url":null,"source":{"id":"https://openalex.org/S12168194","display_name":"Obstetric Anesthesia Digest","issn_l":"0275-665X","issn":["0275-665X","1536-5395"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310315671","host_organization_name":"Lippincott Williams & Wilkins","host_organization_lineage":["https://openalex.org/P4310315671","https://openalex.org/P4310318547"],"host_organization_lineage_names":["Lippincott Williams & Wilkins","Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Obstetric Anesthesia Digest","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9537000060081482,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":2,"referenced_works":["https://openalex.org/W1972473783","https://openalex.org/W2036275036"],"related_works":["https://openalex.org/W2012228801","https://openalex.org/W2020067833","https://openalex.org/W4381245486","https://openalex.org/W4387189708","https://openalex.org/W4414196684","https://openalex.org/W7217113464","https://openalex.org/W1715623587","https://openalex.org/W4287548710","https://openalex.org/W6912088766","https://openalex.org/W7162413010"],"abstract_inverted_index":{"Lyell,":[0],"D.J.;":[1],"Pullen,":[2],"K.;":[3],"Campbell,":[4],"L.;":[5],"Ching,":[6],"S.;":[7],"Druzin,":[8],"M.L.;":[9],"Chitkara,":[10],"U.;":[11],"Burrs,":[12],"D.;":[13],"Caughey,":[14],"A.B.;":[15],"El-Sayed,":[16],"Y.Y.Author":[17],"Information":[18]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2016,"cited_by_count":2},{"year":2012,"cited_by_count":2}],"updated_date":"2026-10-17T09:40:24.721904","created_date":"2016-06-24T00:00:00"}