Predictive value of neutrophil‐to‐lymphocyte ratio on admission for intrapartum maternal fever in parturients undergoing epidural analgesia: A retrospective cohort study using propensity score‐matched analysis

Objective To identify the predictive value of the neutrophil‐to‐lymphocyte ratio (NLR) on admission for intrapartum maternal fever in parturients undergoing epidural analgesia (EA). Methods In this retrospective cohort study, propensity score matching (PSM) was applied to address covariates. Univari...

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Veröffentlicht in:International journal of gynecology and obstetrics 2025-01, Vol.168 (1), p.167-176
Hauptverfasser: Li, Kunyue, Deng, Chunyun, Sun, Daqi, Wang, Yuxia, Li, Genxia, Jiang, Lihua, Wang, Tao
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container_issue 1
container_start_page 167
container_title International journal of gynecology and obstetrics
container_volume 168
creator Li, Kunyue
Deng, Chunyun
Sun, Daqi
Wang, Yuxia
Li, Genxia
Jiang, Lihua
Wang, Tao
description Objective To identify the predictive value of the neutrophil‐to‐lymphocyte ratio (NLR) on admission for intrapartum maternal fever in parturients undergoing epidural analgesia (EA). Methods In this retrospective cohort study, propensity score matching (PSM) was applied to address covariates. Univariate and multivariate regression analyses were implemented in sequence to find out the factors influencing intrapartum fever. The receiver operating characteristics curve was applied to determine the area under the curve (AUC) of NLR for intrapartum fever. Results NLR and duration of EA were independent risk factors for intrapartum fever. The AUC of the combined indicator (NLR + duration of EA) was higher than that of NLR (AUC = 0.583, 95% confidence interval [CI] 0.53–0.64) and duration of EA (AUC = 0.702, 95% CI 0.66–0.75), reaching 0.715 (95% CI 0.67–0.76; p 
doi_str_mv 10.1002/ijgo.15820
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Methods In this retrospective cohort study, propensity score matching (PSM) was applied to address covariates. Univariate and multivariate regression analyses were implemented in sequence to find out the factors influencing intrapartum fever. The receiver operating characteristics curve was applied to determine the area under the curve (AUC) of NLR for intrapartum fever. Results NLR and duration of EA were independent risk factors for intrapartum fever. The AUC of the combined indicator (NLR + duration of EA) was higher than that of NLR (AUC = 0.583, 95% confidence interval [CI] 0.53–0.64) and duration of EA (AUC = 0.702, 95% CI 0.66–0.75), reaching 0.715 (95% CI 0.67–0.76; p &lt; 0.001). NLR increased predictive performance for intrapartum fever when added to the duration of EA (net reclassification index 0.076, p = 0.022; integrated discrimination improvement 0.020, p = 0.002). Conclusion NLR has limited predictive power for intrapartum fever. The combination of NLR and duration of epidural analgesia may be considered a promising predictor for intrapartum maternal fever in parturients undergoing epidural analgesia. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever.</description><identifier>ISSN: 0020-7292</identifier><identifier>ISSN: 1879-3479</identifier><identifier>EISSN: 1879-3479</identifier><identifier>DOI: 10.1002/ijgo.15820</identifier><identifier>PMID: 39092575</identifier><language>eng</language><publisher>United States</publisher><subject>Adult ; Analgesia, Epidural ; Analgesia, Obstetrical - methods ; duration of epidural analgesia ; epidural analgesia ; epidural‐associated maternal fever ; Female ; Fever - etiology ; Humans ; inflammation ; intrapartum maternal fever ; labor analgesia ; Lymphocyte Count ; Lymphocytes ; Neutrophils ; neutrophil‐to‐lymphocyte ratio ; Predictive Value of Tests ; Pregnancy ; Propensity Score ; Retrospective Studies ; Risk Factors ; ROC Curve</subject><ispartof>International journal of gynecology and obstetrics, 2025-01, Vol.168 (1), p.167-176</ispartof><rights>2024 International Federation of Gynecology and Obstetrics.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2180-6768d7c8e426edf426d00ad4c7e3a3c4bf56b6f813a85302214c961879a0cd013</cites><orcidid>0000-0003-0789-6201 ; 0009-0004-3672-9407</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fijgo.15820$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fijgo.15820$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/39092575$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Kunyue</creatorcontrib><creatorcontrib>Deng, Chunyun</creatorcontrib><creatorcontrib>Sun, Daqi</creatorcontrib><creatorcontrib>Wang, Yuxia</creatorcontrib><creatorcontrib>Li, Genxia</creatorcontrib><creatorcontrib>Jiang, Lihua</creatorcontrib><creatorcontrib>Wang, Tao</creatorcontrib><title>Predictive value of neutrophil‐to‐lymphocyte ratio on admission for intrapartum maternal fever in parturients undergoing epidural analgesia: A retrospective cohort study using propensity score‐matched analysis</title><title>International journal of gynecology and obstetrics</title><addtitle>Int J Gynaecol Obstet</addtitle><description>Objective To identify the predictive value of the neutrophil‐to‐lymphocyte ratio (NLR) on admission for intrapartum maternal fever in parturients undergoing epidural analgesia (EA). Methods In this retrospective cohort study, propensity score matching (PSM) was applied to address covariates. Univariate and multivariate regression analyses were implemented in sequence to find out the factors influencing intrapartum fever. The receiver operating characteristics curve was applied to determine the area under the curve (AUC) of NLR for intrapartum fever. Results NLR and duration of EA were independent risk factors for intrapartum fever. The AUC of the combined indicator (NLR + duration of EA) was higher than that of NLR (AUC = 0.583, 95% confidence interval [CI] 0.53–0.64) and duration of EA (AUC = 0.702, 95% CI 0.66–0.75), reaching 0.715 (95% CI 0.67–0.76; p &lt; 0.001). NLR increased predictive performance for intrapartum fever when added to the duration of EA (net reclassification index 0.076, p = 0.022; integrated discrimination improvement 0.020, p = 0.002). Conclusion NLR has limited predictive power for intrapartum fever. The combination of NLR and duration of epidural analgesia may be considered a promising predictor for intrapartum maternal fever in parturients undergoing epidural analgesia. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever.</description><subject>Adult</subject><subject>Analgesia, Epidural</subject><subject>Analgesia, Obstetrical - methods</subject><subject>duration of epidural analgesia</subject><subject>epidural analgesia</subject><subject>epidural‐associated maternal fever</subject><subject>Female</subject><subject>Fever - etiology</subject><subject>Humans</subject><subject>inflammation</subject><subject>intrapartum maternal fever</subject><subject>labor analgesia</subject><subject>Lymphocyte Count</subject><subject>Lymphocytes</subject><subject>Neutrophils</subject><subject>neutrophil‐to‐lymphocyte ratio</subject><subject>Predictive Value of Tests</subject><subject>Pregnancy</subject><subject>Propensity Score</subject><subject>Retrospective Studies</subject><subject>Risk Factors</subject><subject>ROC Curve</subject><issn>0020-7292</issn><issn>1879-3479</issn><issn>1879-3479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2025</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kc1u1DAUhS1ERYfChgdAXiKktP5J4oRdVUEpqlQWsI489s2Mq8QO_hmUHY_A27HnSXAmbZdsri3dz-ce34PQG0rOKSHswtzv3DmtGkaeoQ1tRFvwUrTP0SY3SSFYy07RyxDuCSFUUPoCnfKWtKwS1Qb9-epBGxXNAfBBDgmw67GFFL2b9mb4--t3dLkM8zjtnZojYC-jcdhZLPVoQjD51juPjY1eTtLHNOJRRvBWDriHAywtfGx4AzYGnKwGv3PG7jBMRiefQZnpHQQjP-BL7CFPDxOsrpTbOx9xiEnPOIXl2ZTNgQ0mzjgo5yEbzCPVHvRRaA4mvEInvRwCvH44z9D3Tx-_XX0ubu-ub64ubwvFaEOKWtSNFqqBktWg-1w1IVKXSgCXXJXbvqq3dd9QLpuKE8Zoqdp62bEkShPKz9C7VTd7-pEgxC4vRcEwSAsuhY6TRvCqLnmV0fcrqvLvgoe-m7wZpZ87SrolyG4JsjsGmeG3D7ppO4J-Qh-TywBdgZ9mgPk_Ut3Nl-u7VfQfKD2zWw</recordid><startdate>202501</startdate><enddate>202501</enddate><creator>Li, Kunyue</creator><creator>Deng, Chunyun</creator><creator>Sun, Daqi</creator><creator>Wang, Yuxia</creator><creator>Li, Genxia</creator><creator>Jiang, Lihua</creator><creator>Wang, Tao</creator><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><orcidid>https://orcid.org/0000-0003-0789-6201</orcidid><orcidid>https://orcid.org/0009-0004-3672-9407</orcidid></search><sort><creationdate>202501</creationdate><title>Predictive value of neutrophil‐to‐lymphocyte ratio on admission for intrapartum maternal fever in parturients undergoing epidural analgesia: A retrospective cohort study using propensity score‐matched analysis</title><author>Li, Kunyue ; Deng, Chunyun ; Sun, Daqi ; Wang, Yuxia ; Li, Genxia ; Jiang, Lihua ; Wang, Tao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2180-6768d7c8e426edf426d00ad4c7e3a3c4bf56b6f813a85302214c961879a0cd013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2025</creationdate><topic>Adult</topic><topic>Analgesia, Epidural</topic><topic>Analgesia, Obstetrical - methods</topic><topic>duration of epidural analgesia</topic><topic>epidural analgesia</topic><topic>epidural‐associated maternal fever</topic><topic>Female</topic><topic>Fever - etiology</topic><topic>Humans</topic><topic>inflammation</topic><topic>intrapartum maternal fever</topic><topic>labor analgesia</topic><topic>Lymphocyte Count</topic><topic>Lymphocytes</topic><topic>Neutrophils</topic><topic>neutrophil‐to‐lymphocyte ratio</topic><topic>Predictive Value of Tests</topic><topic>Pregnancy</topic><topic>Propensity Score</topic><topic>Retrospective Studies</topic><topic>Risk Factors</topic><topic>ROC Curve</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Kunyue</creatorcontrib><creatorcontrib>Deng, Chunyun</creatorcontrib><creatorcontrib>Sun, Daqi</creatorcontrib><creatorcontrib>Wang, Yuxia</creatorcontrib><creatorcontrib>Li, Genxia</creatorcontrib><creatorcontrib>Jiang, Lihua</creatorcontrib><creatorcontrib>Wang, Tao</creatorcontrib><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>International journal of gynecology and obstetrics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Kunyue</au><au>Deng, Chunyun</au><au>Sun, Daqi</au><au>Wang, Yuxia</au><au>Li, Genxia</au><au>Jiang, Lihua</au><au>Wang, Tao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Predictive value of neutrophil‐to‐lymphocyte ratio on admission for intrapartum maternal fever in parturients undergoing epidural analgesia: A retrospective cohort study using propensity score‐matched analysis</atitle><jtitle>International journal of gynecology and obstetrics</jtitle><addtitle>Int J Gynaecol Obstet</addtitle><date>2025-01</date><risdate>2025</risdate><volume>168</volume><issue>1</issue><spage>167</spage><epage>176</epage><pages>167-176</pages><issn>0020-7292</issn><issn>1879-3479</issn><eissn>1879-3479</eissn><abstract>Objective To identify the predictive value of the neutrophil‐to‐lymphocyte ratio (NLR) on admission for intrapartum maternal fever in parturients undergoing epidural analgesia (EA). Methods In this retrospective cohort study, propensity score matching (PSM) was applied to address covariates. Univariate and multivariate regression analyses were implemented in sequence to find out the factors influencing intrapartum fever. The receiver operating characteristics curve was applied to determine the area under the curve (AUC) of NLR for intrapartum fever. Results NLR and duration of EA were independent risk factors for intrapartum fever. The AUC of the combined indicator (NLR + duration of EA) was higher than that of NLR (AUC = 0.583, 95% confidence interval [CI] 0.53–0.64) and duration of EA (AUC = 0.702, 95% CI 0.66–0.75), reaching 0.715 (95% CI 0.67–0.76; p &lt; 0.001). NLR increased predictive performance for intrapartum fever when added to the duration of EA (net reclassification index 0.076, p = 0.022; integrated discrimination improvement 0.020, p = 0.002). Conclusion NLR has limited predictive power for intrapartum fever. The combination of NLR and duration of epidural analgesia may be considered a promising predictor for intrapartum maternal fever in parturients undergoing epidural analgesia. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever. Synopsis The neutrophil‐to‐lymphocyte ratio is an accessible predictor for the early identification of parturients at risk of intrapartum fever.</abstract><cop>United States</cop><pmid>39092575</pmid><doi>10.1002/ijgo.15820</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-0789-6201</orcidid><orcidid>https://orcid.org/0009-0004-3672-9407</orcidid></addata></record>
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subjects Adult
Analgesia, Epidural
Analgesia, Obstetrical - methods
duration of epidural analgesia
epidural analgesia
epidural‐associated maternal fever
Female
Fever - etiology
Humans
inflammation
intrapartum maternal fever
labor analgesia
Lymphocyte Count
Lymphocytes
Neutrophils
neutrophil‐to‐lymphocyte ratio
Predictive Value of Tests
Pregnancy
Propensity Score
Retrospective Studies
Risk Factors
ROC Curve
title Predictive value of neutrophil‐to‐lymphocyte ratio on admission for intrapartum maternal fever in parturients undergoing epidural analgesia: A retrospective cohort study using propensity score‐matched analysis
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