Selma Fahmi1, Nikos Papadogiannakis2, Josefine Nasiell1. 1. a Department of Clinical Science , Intervention and Technology, Karolinska Institutet and Karolinska University Hospital , Stockholm , Sweden. 2. b Department of Laboratory Medicine, Division of Pathology , Section of Perinatal Pathology, Karolinska Institute and Karolinska University Hospital , Stockholm , Sweden.
Abstract
OBJECTIVE: To examine whether different grades of placenta inflammation are associated with risk for spontaneous preterm birth, taking into consideration maternal and delivery factors. Placentas from spontaneous preterm births were compared with a control group from full-term deliveries. METHODS: Placentas from 98 full-term, 71 late preterm (gestational week 34-37), and 65 early preterm (gestational week 22-33) singleton deliveries were analysed from the Karolinska University Hospital in Stockholm. The placentas were examined for histologic chorioamnionitis (HCA) grade 1 (low) and 2 (high). Mother, child, and delivery parameters were collected from maternity centre and delivery forms. RESULTS: There was a relatively low incidence of HCA in the preterm groups (26.7% and 38.5% in the late and early preterm groups, respectively). HCA 2 was most common in the early preterm group and HCA 1 was most common in the full-term group. The odds of early preterm birth was lower for placentas with HCA 1 compared to HCA 2 (OR = 0.17) and higher for placentas with HCA 2 compared to no HCA (OR = 2.17). CONCLUSIONS: Despite a relatively low incidence of HCA in the preterm groups, HCA 2 seems to be associated with early preterm birth whereas HCA 1 seems to be part of the full-term delivery.
OBJECTIVE: To examine whether different grades of placenta inflammation are associated with risk for spontaneous preterm birth, taking into consideration maternal and delivery factors. Placentas from spontaneous preterm births were compared with a control group from full-term deliveries. METHODS: Placentas from 98 full-term, 71 late preterm (gestational week 34-37), and 65 early preterm (gestational week 22-33) singleton deliveries were analysed from the Karolinska University Hospital in Stockholm. The placentas were examined for histologic chorioamnionitis (HCA) grade 1 (low) and 2 (high). Mother, child, and delivery parameters were collected from maternity centre and delivery forms. RESULTS: There was a relatively low incidence of HCA in the preterm groups (26.7% and 38.5% in the late and early preterm groups, respectively). HCA 2 was most common in the early preterm group and HCA 1 was most common in the full-term group. The odds of early preterm birth was lower for placentas with HCA 1 compared to HCA 2 (OR = 0.17) and higher for placentas with HCA 2 compared to no HCA (OR = 2.17). CONCLUSIONS: Despite a relatively low incidence of HCA in the preterm groups, HCA 2 seems to be associated with early preterm birth whereas HCA 1 seems to be part of the full-term delivery.
Authors: Tianbing Ding; Shilpa Mokshagundam; Paolo F Rinaudo; Kevin G Osteen; Kaylon L Bruner-Tran Journal: Biol Reprod Date: 2018-10-01 Impact factor: 4.285