scholarly journals Perinatal Outcomes of Monochorionic-Diamniotic Twin Pregnancies Uncomplicated at 28 Weeks of Gestation

2016 ◽  
Vol 7 ◽  
pp. JCM.S38895 ◽  
Author(s):  
Shunji Suzuki
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Perinatal Outcomes ◽  
Second Trimester ◽  
Perinatal Complications ◽  
Third Trimester ◽  
The Third ◽  
Perinatal Center ◽  
Twin Pregnancies

We examined the prevalence of specific perinatal complications of monochorionic-diamniotic twin pregnancies in cases without any abnormal findings until the second trimester of pregnancy. This was a retrospective cohort study performed at a tertiary perinatal center in Tokyo, Japan. There were 88 cases of uncomplicated monochorionic-diamniotic twin pregnancies at 28 weeks of gestation. In five of them (5.7%), there were serious complications associated with placental circulatory imbalance between the twins during the third trimester of pregnancy. Two cases were complicated by twin–twin transfusion syndrome, two cases were complicated by twin anemia–polycythemia sequence, and one case was complicated by acute twin–twin transfusion syndrome. In the five cases, no abnormal ultrasonographic findings or symptoms were recognized one or two weeks prior to the diagnosis. Fifty-eight cases (65.9%) were delivered at term uneventfully. Serious complications due to placental circulatory imbalance between twins occurred in about 6% of cases during the third trimester of pregnancy.

scholarly journals Ramifications of third trimester amniocentesis in twin pregnancies: a retrospective cohort study

2020 ◽  
Author(s):  
Avital Wertheimer ◽  
Dean Decter ◽  
Adi Borovich ◽  
Ron Bardin ◽  
Eran Hadar ◽  
...  
Keyword(s):  
Cohort Study ◽  
Gestational Age ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Tertiary Hospital ◽  
Premature Rupture Of Membranes ◽  
Third Trimester ◽  
Membrane Rupture ◽  
The Third ◽  
Twin Pregnancies

Abstract Background: To determine the association between gestational age at amniocentesis and procedure-related complications in twin gestations.Methods: A retrospective cohort study of all twin gestations that underwent amniocentesis in a tertiary hospital between 2007 and 2016. Outcomes and procedure related complications were compared between third trimester (≥24 weeks) and mid-trimester amniocentesis (16-23 weeks). Results: Compared to mid-trimester amniocentesis (n=157 (84.9%)), the third trimester group (n=28 (15.1%)) was younger (31.5 vs. 35.3 years, p<0.001) and presented with more fetal growth restriction (28% vs. 10% p=0.015). Membrane rupture within 4 weeks of amniocentesis was significantly higher in the third trimester amniocentesis group (31% vs. 1%, p<0.001). Multivariate analysis suggested gestational age at amniocentesis as an independent risk factor for premature rupture of membranes within 4 weeks of amniocentesis. Conclusions: Third trimester amniocentesis in twin pregnancies is associated with significantly higher rates of procedure related membrane rupture compared to mid-trimester amniocentesis.

Is Adherence to the Provisional Institute of Medicine Guidelines of Weight Gain Associated With Better Perinatal Outcomes? A Retrospective Cohort Study of Twin Pregnancies in Southwest China

2021 ◽  
pp. 101053952110260
Author(s):  
Jie Yan ◽  
Li Tang ◽  
Min Xu
Keyword(s):  
Cohort Study ◽  
Weight Gain ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Neonatal Intensive Care ◽  
Low Birthweight ◽  
Perinatal Outcomes ◽  
Institute Of Medicine ◽  
Child Hospital ◽  
Twin Pregnancies

The applicability of the Institute of Medicine (IOM) recommendations of gestational weight gain (GWG) for Chinese twin gestations is uncertain. In this article, we aimed to investigate the associations between GWG among twin gestations, as categorized according to the 2009 IOM guidelines and perinatal outcomes in Chengdu, China. A retrospective cohort study of pregnant women delivering live twins ≥28 weeks at a tertiary maternal and child hospital was conducted. The incidences of perinatal outcomes were compared across 3 groups—that is, women with low, adequate, and excessive GWG. Logistic regression analyses were next performed to confirm the associations while taking into account potential confounders. Results showed that low GWG was associated with a higher risk of preterm birth, low and very low birthweight, neonatal intensive care unit admission, and gestational diabetes, whereas preeclampsia was more frequent among excessive GWG women. In conclusion, adherence to the 2009 IOM guidelines for twin pregnancies are associated with improved perinatal outcomes. This has the potential to improve short- and long-term public health outcomes.

scholarly journals Analysis of the results of a retrospective cohort study of the course of pregnancy, childbirth and the postpartum period in high-risk patients to identify factors of unfavorable outcomes and build a predictive model of fetal loss

2021 ◽  
Vol 2 ◽  
pp. 47-52
Author(s):  
V.I.  Оshovskyy
Keyword(s):  
Heart Rate ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Fetal Heart Rate ◽  
Retrospective Cohort ◽  
Fetal Heart ◽  
Perinatal Loss ◽  
Third Trimester ◽  
The Third ◽  
Fetal Heart Rate Variability

Prenatal prognosis is an important part of obstetric care, which aims to reduce fetal and neonatal losses. A differentiated approach to the management of different risk groups allows you to optimize existing approaches.The objective: to identify antenatal factors that correlate with perinatal losses, by conducting a retrospective cohort study of women at high perinatal risk, to build a multifactorial prognostic model of adverse pregnancy outcomes.Materials and methods. A retrospective cohort study was conducted from 2014 to 2016 on the basis of the medical center LLC «Uniclinic», Medical Genetics Center «Genome», Clinic of Reproductive Genetics «Victoria», Kyiv City Maternity Hospital №2. 2154 medical cards of pregnant women from the group of high perinatal risk were selected and analyzed. Of these, 782 pregnant women were included in the final protocol after verification of compliance with the criteria.Results. Cesarean delivery occurred in 115 cases (14.7%). In 50 cases (6.4%) the caesarean section was performed in a planned manner, in 65 (8.3%) – in an emergency. In 39 (5%) cases, the indication for surgical delivery was acute fetal distress. Antenatal fetal death occurred in 11 (1.4%) cases: one case in terms of <34 weeks and <37 weeks of gestation, the remaining 9 cases – in terms of> 37 weeks. Intranatal death of two fetuses (0.3%) was due to acute asphyxia on the background of placental insufficiency. In the early neonatal period, 14 (1.8%) newborns died. Hospitalization of the newborn to the intensive care unit for the first 7 days was registered in 64 (8.2%) cases.The need for mechanical ventilation was stated in 3.96% (31/782) of newborns. The method of construction and analysis of multifactor models of logistic regression was used in the analysis of the relationship between the risk of perinatal losses (antenatal death, intranatal death, early neonatal death) and factor characteristics.Conclusion. Signs associated with the risk of perinatal loss: the presence of chronic hypertension, preeclampsia in previous pregnancies, type of fertilization (natural or artificial), the concentration of PAPP-A (MoM), the concentration of free β-HCG (MoM) in the second trimester, average PI in the uterine arteries in 28–30 weeks of pregnancy, PI in the middle cerebral arteries in 28–30 weeks of pregnancy, episodes of low fetal heart rate variability in the third trimester of pregnancy, episodes of high fetal heart rate variability in the third trimester of pregnancy. The model, built on selected features, allows with a sensitivity of 73.1% (95% CI: 52.2% – 88.4%) and a specificity of 72.7% (95% CI: 69.3% – 75.9%) to predict risk perinatal loss.

scholarly journals Comparison of adverse perinatal outcomes between Asians and Caucasians: a population-based retrospective cohort study in Ontario

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Na Zeng ◽  
Erica Erwin ◽  
Wendy Wen ◽  
Daniel J. Corsi ◽  
Shi Wu Wen ◽  
...  
Keyword(s):  
Cohort Study ◽  
Birth Weight ◽  
Preterm Birth ◽  
Cesarean Section ◽  
Gestational Age ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Perinatal Outcomes ◽  
Population Based ◽  
Adverse Perinatal Outcomes

Abstract Background Racial disparities in adverse perinatal outcomes have been studied in other countries, but little has been done for the Canadian population. In this study, we sought to examine the disparities in adverse perinatal outcomes between Asians and Caucasians in Ontario, Canada. Methods We conducted a population-based retrospective cohort study that included all Asian and Caucasian women who attended a prenatal screening and resulted in a singleton birth in an Ontario hospital (April 1st, 2015-March 31st, 2017). Generalized estimating equation models were used to estimate the independent adjusted relative risks and adjusted risk difference of adverse perinatal outcomes for Asians compared with Caucasians. Results Among 237,293 eligible women, 31% were Asian and 69% were Caucasian. Asians were at an increased risk of gestational diabetes mellitus, placental previa, early preterm birth (< 32 weeks), preterm birth, emergency cesarean section, 3rd and 4th degree perineal tears, low birth weight (< 2500 g, < 1500 g), small-for-gestational-age (<10th percentile, <3rd percentile), neonatal intensive care unit admission, and hyperbilirubinemia requiring treatment, but had lower risks of preeclampsia, macrosomia (birth weight > 4000 g), large-for-gestational-age neonates, 5-min Apgar score < 7, and arterial cord pH ≤7.1, as compared with Caucasians. No difference in risk of elective cesarean section was observed between Asians and Caucasians. Conclusion There are significant differences in several adverse perinatal outcomes between Asians and Caucasians. These differences should be taken into consideration for clinical practices due to the large Asian population in Canada.

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