scholarly journals The Risk of Postpartum Hemorrhage Following Prior Prelabor Cesarean Delivery Stratified by Abnormal Placentation: A Multicenter Historical Cohort Study

2021 ◽  
Vol 8 ◽  
Author(s):  
Bi Shilei ◽  
Zhang Lizi ◽  
Li Yulian ◽  
Liang Yingyu ◽  
Huang Lijun ◽  
...  
Keyword(s):  
Cohort Study ◽  
Pregnant Women ◽  
Cesarean Delivery ◽  
Postpartum Hemorrhage ◽  
Placenta Previa ◽  
Subsequent Pregnancy ◽  
Abnormal Placentation ◽  
Historical Cohort ◽  
Historical Cohort Study ◽  
History Of

Background: Prior prelabor cesarean delivery (CD) was associated with an increase in the risk of placenta previa (PP) in a second delivery, whether it may impact postpartum hemorrhage (PPH) independent of abnormal placentation. This study aimed to assess the risk of PPH stratified by abnormal placentation following a first CD before the onset of labor (prelabor) or intrapartum CD.Methods: This multicenter, historical cohort study involved singleton, pregnant women at 28 weeks of gestation or greater with a CD history between January 2017 and December 2017 in 11 public tertiary hospitals within 7 provinces of China. PPH was analyzed in the subsequent pregnancy between women with prior prelabor CD and women with intrapartum CD. Furthermore, PPH was analyzed in pregnant women stratified by complications with PP alone [without placenta accreta spectrum (PAS) disorders], complications with PP and PAS, complications with PAS alone (without PP), and normal placentation. We performed multivariate logistic regression to calculate adjusted odds ratios (aOR) and 95% CI controlling for predefined covariates.Results: Out of 10,833 pregnant women, 1,197 (11%) women had a history of intrapartum CD and 9,636 (89%) women had a history of prelabor CD. Prior prelabor CD increased the risk of PP (aOR 1.91, 95% CI 1.40–2.60), PAS (aOR 1.68, 95% CI 1.11–2.24), and PPH (aOR 1.33, 95% CI 1.02–1.75) in a subsequent pregnancy. After stratification by complications with PP alone, PP and PAS, PAS alone, and normal placentation, prior prelabor CD only increased the risk of PPH (aOR 3.34, 95% CI 1.35–8.23) in a subsequent pregnancy complicated with PP and PAS.Conclusion: Compared to intrapartum CD, prior prelabor CD increased the risk of PPH in a subsequent pregnancy only when complicated by PP and PAS.

Risk Analysis of Placenta Previa in Subsequent Pregnancy with History of Cesarean Section: A Case Control Study in Faridpur Medical College Hospital

2016 ◽  
Vol 10 (2) ◽  
pp. 52-54
Author(s):  
Dilruba Zeba ◽  
Shila Rani Das ◽  
Swapan Kumar Biswas ◽  
Rajib Kumar Roy ◽  
Abul Fattah ◽  
...  
Keyword(s):  
Cesarean Section ◽  
Cesarean Delivery ◽  
Placenta Previa ◽  
Subsequent Pregnancy ◽  
Medical College Hospital ◽  
Bladder Injury ◽  
College Hospital ◽  
Medical College ◽  
History Of ◽  
Previous Cesarean

Placenta previa is a life threatening pregnancy complication where placenta partially or completely covers the internal cervical os causing serious adverse consequence for both mother and baby. History of cesarean delivery is an important risk factor for placenta previa. Which have a increased chance of cesarean hysterectomy and bladder injury because of an associated accrete syndrome. The objective of this study is to analyze the outcome of placenta previa with history of cesarean section. This is a prospective study done in Faridpur Medical College Hospital, Bangladesh from 01.01.2013 up to 31.12.14. Total 18 (study group) patients had undergone cesarean delivery with placenta previa and history of previous cesarean section. Among 18 patients maternal age range was 25- 40, parity 1-4, emergency hysterectomy was done in 11, average blood transfusion 2-8 and other morbidity like urinary bladder injury was 4. So we decided to conduct the study to evaluate the frequency of the placenta previa and morbidity related to number of previous cesarean deliveries.Faridpur Med. Coll. J. Jul 2015;10(2): 52-54

scholarly journals Group B streptococcus (GBS) colonization and disease among pregnant women: a historical cohort study

2017 ◽  
Vol 217 (6) ◽  
pp. 731
Author(s):  
James M. Edwards ◽  
Clara Wynn ◽  
Nora Watson ◽  
Chris Focht ◽  
Christopher A. Todd ◽  
...  
Keyword(s):  
Cohort Study ◽  
Pregnant Women ◽  
Group B Streptococcus ◽  
Historical Cohort ◽  
Historical Cohort Study ◽  
Group B

scholarly journals Factors Associated with Follow-Up of Children Exposed to Mother-to-Child Transmission of HIV: A Historical Cohort Study Form 2000 to 2017, in Porto Alegre, Brazil.

2021 ◽  
Author(s):  
Karen da Silva Calvo ◽  
Daniela Riva Knauth ◽  
Bruna Hentges ◽  
Andrea Fachel Leal ◽  
Mariana Alberto da Silva ◽  
...  
Keyword(s):  
Cohort Study ◽  
Prenatal Care ◽  
Pregnant Women ◽  
Epidemiological Surveillance ◽  
Historical Cohort ◽  
Loss To Follow Up ◽  
Factors Associated ◽  
Historical Cohort Study ◽  
Years Of Schooling

Abstract Background: There are many inequalities in terms of prevention and treatment for pregnant women with HIV and exposed children in low and middle income countries. The Brazilian protocol for prenatal care includes rapid diagnostic testing for HIV, compulsory notification, and monitoring by the epidemiological surveillance of children exposed to HIV until 18 months after delivery. The case is closed after HIV serology results are obtained. Loss to follow-up is defined as a child who was not located at the end of the case, and, therefore, did not have a laboratory diagnosis. Loss to follow-up is a current problem and has been documented in other countries. This study analyzed the incidence of loss to follow-up of children exposed to HIV and the sociodemographic, behavioral and health variables of associated pregnant women. Methods: This historical cohort study included information on pregnant women living with HIV and the outcome of the child’s exposure to HIV. The association between predictors and the child’s outcome as a loss to follow-up was investigated using the Poisson Regression model. Relative Risk calculations were performed. The significance level of 5% was adopted for variables in the adjusted model. Results: Between 2000 and 2017, of 6,836 children exposed to HIV, 1,763 (25.8%) were classified as loss to follow-up. The factors associated were: maternal age of up to 22 years (aRR 1.25, 95% CI: 1.09-1.43), the mother’s self-declared race/color being black or mixed (aRR 1.13, 95% CI: 1.03-1.25), up to three years of schooling (aRR 1.45, 95% CI: 1.26-1.67), between four and seven years of schooling (aRR 1.14, 95% CI: 1.02-1.28), intravenous drug use (aRR 1.29, 95% CI: 1.12-1.50), and HIV diagnosis during prenatal care or at delivery (aRR 1.37, 95% CI: 1.24-1.52). Conclusion: Variables related to the individual, social and programmatic vulnerability of pregnant women were evidenced.

scholarly journals Evolution of second trimester low implanted placenta to previa at term: a prospective cohort study

2018 ◽  
Vol 7 (11) ◽  
pp. 4330
Author(s):  
Omar M. Shaaban ◽  
Hamdy A. Ahmed ◽  
Mohammed K. Ali ◽  
Ahmed M. Abbas ◽  
Ahmed Nasr ◽  
...  
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Cohort Study ◽  
Pregnant Women ◽  
Prospective Cohort ◽  
Placenta Previa ◽  
Lower Edge ◽  
Second Trimester ◽  
History Of

Background: The objective of this study is to identify the percentage of low implanted placenta (LIP) at second trimester of pregnancy and identify the risk factors of its persistence to placenta previa (PP) at term.Methods: Through a registered prospective cohort study conducted at tertiary hospital in Upper Egypt, authors screened all pregnant ladies comes to present facility for antenatal second trimester USG between 18-24 weeks gestation. All participants interviewed for detailed risk factors of placenta previa. Those diagnosed to have a LIP (≤1.5 cm from the internal os) had had TVS to confirm the exact distance between the lower edge of the placenta and the internal os. Serial USG had been done every 4 weeks up to delivery to measure the same distance. The primary outcome was the percentage of LIP at 18-24 weeks. Logistic regression analysis was performed to predict the risk factors for PP at term.Results: Through screening of 1000 pregnant lady, LIP had been identified in (52 cases) 5.2% of pregnant women between 18-24 weeks. This percentage dropped gradually to reach 1.3% at 36 weeks of gestation and at time of delivery. The logistic regression analysis demonstrated that the distance between the internal os and the lower edge of the placenta between 18-24 weeks was the single significant variable associated with PP at term (p<0.001, odds ratio 0.319, 95% CI 0.20-0.50). However, excluding the distance from the regression model demonstrated other risk factors as previous miscarriage, previous cesarean section (CS), and history of multiple pregnancies and history of previous PP.Conclusions: About 5.0% of pregnant women have LIP at the second trimester of pregnancy (18-24 weeks) and only 25.0 % of them remain placenta previa at term. A cut-off value of 10 mm between the internal os and the lower edge of the placenta is the most important predictor of development of PP.

scholarly journals Full Dilatation Caesarean Section and the Risk of Preterm Delivery in a Subsequent Pregnancy: A Historical Cohort Study

2020 ◽  
Vol 9 (12) ◽  
pp. 3998
Author(s):  
Lauren Jade Ewington ◽  
Siobhan Quenby
Keyword(s):  
Cohort Study ◽  
Reference Group ◽  
Subsequent Pregnancy ◽  
University Hospital ◽  
Interpregnancy Interval ◽  
Spontaneous Preterm Birth ◽  
Historical Cohort ◽  
Historical Cohort Study ◽  
Increased Risk ◽  
Short Interpregnancy Interval

Full dilatation caesarean sections (CS) have increased risk of uterine extensions, which leads to cervical trauma that has been associated with an increased risk of spontaneous preterm birth (sPTB) in a subsequent pregnancy. The aim of this study was to determine if CS at full dilatation increased the risk of sPTB in a subsequent pregnancy in our unit. A historical cohort study was performed on women delivered by emergency CS between 2008–2015 (n = 5808) in a university hospital who had a subsequent pregnancy in this time frame (n = 1557). Women were classified into two exposure groups; those who were 6–9 cm and those fully dilated at index CS. The reference group was CS at 0–5 cm dilated. The primary outcome was sPTB < 37 weeks’ gestation. CS at 6–9 cm or fully dilated did not significantly increase the odds of sPTB in a subsequent pregnancy (aOR 1.64, 95% CI: 0.83–3.28, p = 0.158; aOR 1.86, 95% CI: 0.91–3.83; p = 0.090, respectively). However, a short interpregnancy interval of <1 year significantly increased the odds of sPTB in a subsequent pregnancy (aOR 3.10, 95% CI: 1.71–5.61). This study has found a short interpregnancy interval following a CS conferred a higher risk of sPTB than full dilatation CS. This finding highlights postnatal contraception and increased surveillance of women with short interpregnancy interval post CS as possible interventions to reduce sPTB.

Sign in / Sign up

Export Citation Format

Share Document