Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries

Background: This study aimed to determine the findings of histological chorioamnionitis (HCA) that may lead to preterm labor. Methods: A total of 126 women who underwent cesarean delivery at our hospital’s obste...

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Main Authors: Ahmet Ilker Eryilmaz, Durmus Onder, Meryem Busra Birsen, Hasan Ali Inal, Gulsah Inal, Metin Kaba
Format: Article
Language:English
Published: IMR Press 2025-06-01
Series:Clinical and Experimental Obstetrics & Gynecology
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Online Access:https://www.imrpress.com/journal/CEOG/52/6/10.31083/CEOG37550
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author Ahmet Ilker Eryilmaz
Durmus Onder
Meryem Busra Birsen
Hasan Ali Inal
Gulsah Inal
Metin Kaba
author_facet Ahmet Ilker Eryilmaz
Durmus Onder
Meryem Busra Birsen
Hasan Ali Inal
Gulsah Inal
Metin Kaba
author_sort Ahmet Ilker Eryilmaz
collection DOAJ
description Background: This study aimed to determine the findings of histological chorioamnionitis (HCA) that may lead to preterm labor. Methods: A total of 126 women who underwent cesarean delivery at our hospital’s obstetrics clinic between May 1 and December 31, 2022, were prospectively included in the study (Group 1, Term labor, n = 63, Group 2, Preterm labor, n = 63). Participants’ sociodemographic characteristics, laboratory results, and histopathological findings were documented and compared between the groups. Placentas were examined for the diagnosis of HCA by a senior pathologist. Results: Significant differences were observed between Group 1 and Group 2 in gestational age at delivery (38.6 ± 1.3 vs 33.6 ± 1.6 weeks, respectively; p < 0.001), Apgar scores at the first minute (8.8 ± 0.6 vs 8.1 ± 1.8; p < 0.001), and neonatal intensive care unit (NICU) admission (9.5% vs 42.9%; p < 0.001). Although hemoglobin (Hb) levels, mean platelet volume (MPV), mean corpuscular volume (MCV), and lymphocyte, neutrophil, monocyte, platelet counts, as well as the pan-inflammatory value at admission, were comparable between groups (p > 0.05), leukocyte counts (10,382.54 ± 2020.58 vs 12,133.33 ± 4936.01, respectively; p = 0.011), neutrophil-lymphocyte ratio (4.21 ± 1.60 vs 5.46 ± 1.48; p = 0.040), and C-reactive protein (CRP) values (6.46 ± 5.56 vs 15.90 ± 9.27 g/dL; p = 0.027) differed significantly between the two groups. The incidence of acute (7.9% vs 49.2%), mild (33.3% vs 49.2%), and moderate (3.2% vs 14.3%) chorioamnionitis was statistically significantly higher in the preterm labor group (p < 0.05). Conclusions: The study findings show that the prevalence of HCA is notably higher in pregnant women with preterm deliveries, and that both the neutrophil-to-lymphocyte ratio and CRP levels are higher in preterm compared to term deliveries. Further studies with larger cohorts are warranted to elucidate these associations.
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series Clinical and Experimental Obstetrics & Gynecology
spelling doaj-art-d8387af9c306452cadd12a3d9b1313132025-08-20T03:33:15ZengIMR PressClinical and Experimental Obstetrics & Gynecology0390-66632025-06-015263755010.31083/CEOG37550S0390-6663(25)02608-9Comparison of Histological Chorioamnionitis Findings Between Term and Preterm DeliveriesAhmet Ilker Eryilmaz0Durmus Onder1Meryem Busra Birsen2Hasan Ali Inal3Gulsah Inal4Metin Kaba5Department of Obstetrics and Gynecology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyDepartment of Obstetrics and Gynecology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyDepartment of Obstetrics and Gynecology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyDepartment of Obstetrics and Gynecology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyDepartment of Pathology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyDepartment of Obstetrics and Gynecology, Antalya Training and Research Hospital, Health Science University, 07100 Antalya, TurkeyBackground: This study aimed to determine the findings of histological chorioamnionitis (HCA) that may lead to preterm labor. Methods: A total of 126 women who underwent cesarean delivery at our hospital’s obstetrics clinic between May 1 and December 31, 2022, were prospectively included in the study (Group 1, Term labor, n = 63, Group 2, Preterm labor, n = 63). Participants’ sociodemographic characteristics, laboratory results, and histopathological findings were documented and compared between the groups. Placentas were examined for the diagnosis of HCA by a senior pathologist. Results: Significant differences were observed between Group 1 and Group 2 in gestational age at delivery (38.6 ± 1.3 vs 33.6 ± 1.6 weeks, respectively; p < 0.001), Apgar scores at the first minute (8.8 ± 0.6 vs 8.1 ± 1.8; p < 0.001), and neonatal intensive care unit (NICU) admission (9.5% vs 42.9%; p < 0.001). Although hemoglobin (Hb) levels, mean platelet volume (MPV), mean corpuscular volume (MCV), and lymphocyte, neutrophil, monocyte, platelet counts, as well as the pan-inflammatory value at admission, were comparable between groups (p > 0.05), leukocyte counts (10,382.54 ± 2020.58 vs 12,133.33 ± 4936.01, respectively; p = 0.011), neutrophil-lymphocyte ratio (4.21 ± 1.60 vs 5.46 ± 1.48; p = 0.040), and C-reactive protein (CRP) values (6.46 ± 5.56 vs 15.90 ± 9.27 g/dL; p = 0.027) differed significantly between the two groups. The incidence of acute (7.9% vs 49.2%), mild (33.3% vs 49.2%), and moderate (3.2% vs 14.3%) chorioamnionitis was statistically significantly higher in the preterm labor group (p < 0.05). Conclusions: The study findings show that the prevalence of HCA is notably higher in pregnant women with preterm deliveries, and that both the neutrophil-to-lymphocyte ratio and CRP levels are higher in preterm compared to term deliveries. Further studies with larger cohorts are warranted to elucidate these associations.https://www.imrpress.com/journal/CEOG/52/6/10.31083/CEOG37550chorioamnionitisc-reactive proteinpremature birth
spellingShingle Ahmet Ilker Eryilmaz
Durmus Onder
Meryem Busra Birsen
Hasan Ali Inal
Gulsah Inal
Metin Kaba
Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
Clinical and Experimental Obstetrics & Gynecology
chorioamnionitis
c-reactive protein
premature birth
title Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
title_full Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
title_fullStr Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
title_full_unstemmed Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
title_short Comparison of Histological Chorioamnionitis Findings Between Term and Preterm Deliveries
title_sort comparison of histological chorioamnionitis findings between term and preterm deliveries
topic chorioamnionitis
c-reactive protein
premature birth
url https://www.imrpress.com/journal/CEOG/52/6/10.31083/CEOG37550
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AT meryembusrabirsen comparisonofhistologicalchorioamnionitisfindingsbetweentermandpretermdeliveries
AT hasanaliinal comparisonofhistologicalchorioamnionitisfindingsbetweentermandpretermdeliveries
AT gulsahinal comparisonofhistologicalchorioamnionitisfindingsbetweentermandpretermdeliveries
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