Isolated oligohydramnios and long-term neurological morbidity of the offspring

2019 ◽  
Vol 11 (6) ◽  
pp. 648-652
Author(s):  
Avital Dorot ◽  
Tamar Wainstock ◽  
Eyal Sheiner ◽  
Asnat Walfisch ◽  
Daniella Landau ◽  
...  
Keyword(s):  
Developmental Disorders ◽  
Medical Center ◽  
Survival Curve ◽  
Neurological Complications ◽  
Population Based ◽  
Exposed Group ◽  
Kaplan Meier ◽  
Neurological Morbidity ◽  
Independent Association

AbstractThis study aimed to assess the association between maternal-isolated oligohydramnios (IO) and offspring long-term neurological complications. A population-based retrospective cohort study was conducted, including all births at a single tertiary medical center in Israel between the years 1991 and 2014. Multiple pregnancies and potential pregnancy complications associated with oligohydramnios were excluded. The computerized obstetrical database was linked with the computerized dataset of all pediatric hospitalizations of the same medical center. Evaluation of cumulative neurological-associated hospitalizations rate over time was compared using a Kaplan–Meier survival curve. The Weibull survival parametric model was conducted to assess the neurological-associated hospitalization risk in the presence of IO, while accounting for potential confounders. A total of 190,259 pregnancies were included in the study, of which 4063 (2.13%) pregnancies were complicated with IO. Total neurological-related hospitalizations were significantly more common in the IO group (3.7% in the IO group and 3.0% in the comparison group, p = 0.005). Pervasive developmental disorder, movement disorders, developmental disorders, and degenerative and demyelization disorders were all specific neurological diagnoses significantly more common in the exposed group. The survival curve demonstrated a significantly higher cumulative hospitalization rate in the exposed group (log-rank p = 0.001). Using a multivariate model adjusting for gestational age, maternal age, and labor induction, an independent association between IO and long-term neurological morbidity of the offspring was observed (adjusted hazard ratio 1.203; 95% CI 1.02–1.42). In summary, a significant association was found between pregnancies complicated by IO and long-term neurological morbidity of the offspring.

scholarly journals Prenatal Exposure to Preeclampsia and Long-Term Ophthalmic Morbidity of the Offspring

2020 ◽  
Vol 9 (5) ◽  
pp. 1271 ◽  
Author(s):  
Eliel Kedar Sade ◽  
Tamar Wainstock ◽  
Erez Tsumi ◽  
Eyal Sheiner
Keyword(s):  
Prenatal Exposure ◽  
Cox Regression ◽  
Medical Center ◽  
Survival Curve ◽  
Cohort Analysis ◽  
Population Based ◽  
Severe Preeclampsia ◽  
Kaplan Meier ◽  
Mild Preeclampsia

The aim of this population-based study was to evaluate whether prenatal exposure to preeclampsia poses a risk for long-term ophthalmic morbidity. A population-based cohort analysis compared the risk of long-term ophthalmic morbidity among children who were prenatally exposed to preeclampsia and those who were not. The study population was composed of children who were born between the years 1991 and 2014 at a single tertiary medical center. Total ophthalmic hospitalization and time-to-event were both evaluated. A Kaplan–Meier survival curve was conducted to compare cumulative ophthalmic hospitalization incidence based on the severity of preeclampsia. Confounders were controlled using a Cox regression model. A total of 242,342 deliveries met the inclusion criteria, of which 7279 (3%) were diagnosed with mild preeclampsia and 2222 (0.92%) with severe preeclampsia or eclampsia. A significant association was found between severe preeclampsia or eclampsia and the risk of long-term vascular-associated ophthalmic morbidity in the offspring (no preeclampsia 0.3%, mild preeclampsia 0.2% and severe preeclampsia or eclampsia 0.5%, p = 0.008). This association persisted after controlling for maternal age and ethnicity (adjusted hazard ratio (HR) 1.861, 95% CI 1.051–3.295). In conclusion, within our population, prenatal exposure to severe preeclampsia or eclampsia was found to be a risk factor for long-term vascular-associated ophthalmic morbidity in the offspring.

scholarly journals The Significance of True Knot of the Umbilical Cord in Long-Term Offspring Neurological Health

2020 ◽  
Vol 10 (1) ◽  
pp. 123
Author(s):  
Yael Lichtman ◽  
Tamar Wainstock ◽  
Asnat Walfisch ◽  
Eyal Sheiner
Keyword(s):  
Umbilical Cord ◽  
Cox Regression ◽  
Survival Curve ◽  
Study Groups ◽  
Population Based ◽  
Kaplan Meier ◽  
Group A ◽  
Independent Association ◽  
Multivariable Regression Models

We aimed to study both the short- and long-term neurological implications in offspring born with confirmed knotting of the umbilical cord—“true knot of cord”. In this population based cohort study, a comparison of perinatal outcome and long-term neurological hospitalizations was performed on the basis of presence or absence of true knot of cord. A Kaplan–Meier survival curve was constructed to compare the cumulative incidence of neurological hospitalizations between the study groups. Multivariable regression models were used to assess the independent association between true knot of cord, perinatal mortality and long term neurological related hospitalizations, while controlling for potential confounders. The study included 243,639 newborns, of them 1.1% (n = 2606) were diagnosed with true knot of the umbilical cord. Higher rates of intrauterine fetal demise (IUFD) were noted in the exposed group, a finding which remained significant in the multivariable generalized estimation equation, while controlling for confounders. The cumulative incidences of neurological hospitalizations over time were comparable between the groups. The Cox regression confirmed a lack of association between true knot of cord and total long term neurological related hospitalizations. While presence of true knot of the umbilical cord is associated with higher IUFD rates, in our population, however, its presence does not appear to impact the long term neurological health of exposed offspring.

scholarly journals The significance of maternal asymptomatic bacteriuria during pregnancy on long-term offspring infectious hospitalizations

2021 ◽  
pp. 1-6
Author(s):  
Bluma Nae ◽  
Tamar Wainstock ◽  
Eyal Sheiner
Keyword(s):  
Regression Model ◽  
Cox Regression ◽  
Medical Center ◽  
Survival Curve ◽  
Cohort Analysis ◽  
Asymptomatic Bacteriuria ◽  
Population Based ◽  
Cox Regression Model ◽  
Kaplan Meier

Abstract Asymptomatic bacteriuria (ASB) is a well-acknowledged infectious entity during pregnancy; yet its long-term implications are not well investigated. The present study aimed to test the association between maternal ASB during pregnancy and long-term offspring infectious hospitalizations. A population-based cohort analysis was conducted, comparing the incidence of long-term infectious-related hospitalizations of offspring born to mothers who were diagnosed with ASB during pregnancy, and those who did not have ASB. The study was conducted at a tertiary medical center and included all singleton deliveries between the years 1991 and 2014. Infectious morbidities were based on a predefined set of International Classification of Disease-9 codes. A Kaplan−Meier survival curve compared cumulative infectious hospitalization incidence between the groups, and a Cox regression model was used to adjust for confounding variables. During the study period, 212,984 deliveries met inclusion criteria. Of them, 5378 (2.5%) were diagnosed with ASB. As compared to offspring of non-ASB mothers, total long-term infectious hospitalizations were significantly higher among children to mothers who were diagnosed with ASB (13.1% vs. 11.1%, OR = 1.2, 95% CI 1.11–1.30, P ≤ 0.001). Likewise, a Kaplan−Meier curve demonstrated higher cumulative incidence of infectious hospitalizations among children born to mothers with ASB (log rank, P = 0.006). In the Cox regression model, while controlling for maternal age, diabetes mellitus, ethnicity, hypertensive disorders, and gestational age, maternal ASB was noted as an independent risk factor for long-term infectious morbidity in the offspring (adjusted HR = 1.1, 95% CI 1.01–1.17, P = 0.042). ASB during pregnancy increases offspring susceptibility to long-term infectious hospitalizations.

scholarly journals The Association Between Delivery of Small-for-Gestational-Age Neonate and Their Risk for Long-Term Neurological Morbidity

2020 ◽  
Vol 9 (10) ◽  
pp. 3199
Author(s):  
Omer Hadar ◽  
Eyal Sheiner ◽  
Tamar Wainstock
Keyword(s):  
Gestational Age ◽  
Small For Gestational Age ◽  
Developmental Disorders ◽  
Proportional Hazards Model ◽  
Survival Curve ◽  
Cohort Analysis ◽  
Cox Proportional Hazards Model ◽  
Increased Risk ◽  
Neurological Morbidity

Small-for-gestational-age (SGA) is defined as a birth weight below the 10th or below the 5th percentile for a specific gestational age and sex. Previous studies have demonstrated an association between SGA neonates and long-term pediatric morbidity. In this research, we aim to evaluate the possible association between small-for-gestational-age (SGA) and long-term pediatric neurological morbidity. A population-based retrospective cohort analysis was performed, comparing the risk of long-term neurological morbidities in SGA and non-SGA newborns delivered between the years 1991 to 2014 at a single regional medical center. The neurological morbidities included hospitalizations as recorded in hospital records. Neurological hospitalization rate was significantly higher in the SGA group (3.7% vs. 3.1%, OR = 1.2, 95% CI 1.1–1.3, p < 0.001). A significant association was noted between neonates born SGA and developmental disorders (0.2% vs. 0.1%, OR = 2.5, 95% CI 1.7–3.8, p < 0.001). The Kaplan-Meier survival curve demonstrated a significantly higher cumulative incidence of neurological morbidity in the SGA group (log-rank p < 0.001). In the Cox proportional hazards model, which controlled for various Confounders, SGA was found to be an independent risk factor for long-term neurological morbidity (adjusted hazard ratio( HR) = 1.18, 95% CI 1.07–1.31, p < 0. 001). In conclusion, we found that SGA newborns are at an increased risk for long-term pediatric neurological morbidity.

scholarly journals Maternal hepatitis B or C carrier status and long-term risk for offspring neurological morbidity: a population-based cohort study

2021 ◽  
pp. 1-5
Author(s):  
Israel Yoles ◽  
Eyal Sheiner ◽  
Naim Abu-Freha ◽  
Tamar Wainstock
Keyword(s):  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Survival Curve ◽  
Population Based ◽  
Cox Proportional Hazards ◽  
Cox Proportional Hazards Model ◽  
Carrier Status ◽  
Hazards Model ◽  
Kaplan Meier

Abstract Hepatitis B and hepatitis C (HBV/HCV) are important global public health concerns. We aimed to evaluate the association between maternal HBV/HCV carrier status and long-term offspring neurological hospitalisations. A population-based cohort analysis compared the risk for long-term childhood neurological hospitalisations in offspring born to HBV/HCV carrier vs. non-carrier mothers in a large tertiary medical centre between 1991 and 2014. Childhood neurological diseases, such as cerebral palsy, movement disorders or developmental disorders, were pre-defined based on ICD-9 codes as recorded in hospital medical files. Offspring with congenital malformations and multiple gestations were excluded from the study. A Kaplan–Meier survival curve was constructed to compare cumulative neurological hospitalisations over time, and a Cox proportional hazards model was used to control for confounders. During the study period (1991–2014), 243,682 newborns met the inclusion criteria, and 777 (0.3%) newborns were born to HBV/HCV mothers. The median follow-up was 10.51 years (0–18 years). The offspring from HBV/HCV mothers had higher incidence of neurological hospitalisations (4.5 vs. 3.1%, hazard ratio (HR) = 1.91, 95% CI 1.37–2.67). Similarly, the cumulative incidence of neurological hospitalisations was higher in children born to HBV/HCV carrier mothers (Kaplan–Meier survival curve log-rank test p < 0.001). The increased risk remained significant in a Cox proportional hazards model, which adjusted for gestational age, mode of delivery and pregnancy complications (adjusted HR = 1.40, 1.01–1.95, p = 0.049). We conclude that maternal HBV or HCV carrier status is an independent risk factor for the long-term neurological hospitalisation of offspring regardless of gestational age and other adverse perinatal outcomes.

Failed Vacuum and the Long-Term Neurological Impact on the Offspring

2017 ◽  
Vol 34 (13) ◽  
pp. 1306-1311 ◽  
Author(s):  
Tamar Wainstock ◽  
Eyal Sheiner ◽  
Daniella Landau ◽  
Ruslan Sergienko ◽  
Asnat Walfisch ◽  
...  
Keyword(s):  
Vaginal Delivery ◽  
Survival Curve ◽  
Study Groups ◽  
Population Based ◽  
Operative Vaginal Delivery ◽  
Emergency Cesarean ◽  
Increased Risk ◽  
Neurological Morbidity ◽  
Vacuum Delivery

Objective The objective of this study was to investigate the association between failed vacuum procedures and long-term pediatric neurological morbidity of the offspring (up to the age of 18 years). Study Design We performed a population-based cohort study to assess the risk of long-term neurological morbidity, including children who were born following either a successful operative vaginal delivery or a failed procedure leading to an emergency cesarean delivery. Results A total of 7,978 neonates underwent operative vaginal delivery during the study period, meeting the inclusion criteria. The procedure resulted in a successful vaginal delivery in 7,733 (96.9%) cases, while it failed in 245 (3.1%). Total neurological morbidity was comparable between the study groups (3.0 vs. 3.3%, p = 0.8). The Kaplan–Meier survival curve exhibited no difference in the cumulative incidence of total neurological morbidity (log rank, p = 0.967). In the Cox's regression model, a failed vacuum delivery was not associated with an increased long-term neurological morbidity, as compared with a successful procedure, after adjusting for confounders (adjusted hazard ratio: 1.04, 95% confidence interval: 0.5–2.1, p = 0.922). Conclusion A failed vacuum delivery does not appear to be associated with an increased risk for neurological morbidity of the offspring studied up to 18 years following the event.

scholarly journals Identifying the Critical Threshold for Long-Term Pediatric Neurological Hospitalizations of the Offspring in Preterm Delivery

2021 ◽  
Vol 10 (13) ◽  
pp. 2919
Author(s):  
Shiran Zer ◽  
Tamar Wainstock ◽  
Eyal Sheiner ◽  
Shayna Miodownik ◽  
Gali Pariente
Keyword(s):  
Preterm Delivery ◽  
Gestational Age ◽  
Cox Model ◽  
Survival Curve ◽  
Cohort Analysis ◽  
Critical Threshold ◽  
Kaplan Meier ◽  
Neurological Morbidity ◽  
Meier Survival Curve

We opted to investigate whether a critical threshold exists for long-term pediatric neurological morbidity, and cerebral palsy (CP), in preterm delivery, via a population-based cohort analysis. Four study groups were classified according to their gestational age at birth: 24–27.6, 28–31.6, 32–36.6 weeks and term deliveries, evaluating the incidence of long-term hospitalizations of the offspring due to neurological morbidity. Cox proportional hazard models were performed to control for confounders. A Kaplan–Meier survival curve was used to compare the cumulative neurological morbidity incidence for each group. A total of 220,563 deliveries were included: 0.1% (118) occurred at 24–27.6 weeks of gestation, 0.4% (776) occurred at 28–31.6 weeks of gestation, 6% (13,308) occurred at 32–36.6 weeks of gestation and 93% (206,361) at term. In a Cox model, while adjusting for confounders, delivery before 25 weeks had a 3.9-fold risk for long-term neurological morbidity (adjusted HR (hazard ratio) = 3.9, 95% CI (confidence interval) 2.3–6.6; p < 0.001). The Kaplan–Meier survival curve demonstrated a linear association between long-term neurological morbidity and decreasing gestational age. In a second Cox model, adjusted for confounders, infants born before 25 weeks of gestation had increased rates of CP (adjusted HR = 62.495% CI 25.6–152.4; p < 0.001). In our population, the critical cut-off for long-term neurological complications is delivery before 25 weeks gestation.

Inter-pregnancy interval and later pediatric cardiovascular health of the offspring – a population-based cohort study

2020 ◽  
pp. 1-5
Author(s):  
Majdi Imterat ◽  
Tamar Wainstock ◽  
Eyal Sheiner ◽  
Gali Pariente
Keyword(s):  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Population Based ◽  
Cox Proportional Hazards ◽  
Cardiovascular Morbidity ◽  
Cox Proportional Hazards Model ◽  
Hazards Model ◽  
Kaplan Meier ◽  
Inter Pregnancy Interval

Abstract Recent evidence suggests that a long inter-pregnancy interval (IPI: time interval between live birth and estimated time of conception of subsequent pregnancy) poses a risk for adverse short-term perinatal outcome. We aimed to study the effect of short (<6 months) and long (>60 months) IPI on long-term cardiovascular morbidity of the offspring. A population-based cohort study was performed in which all singleton live births in parturients with at least one previous birth were included. Hospitalizations of the offspring up to the age of 18 years involving cardiovascular diseases and according to IPI length were evaluated. Intermediate interval, between 6 and 60 months, was considered the reference. Kaplan–Meier survival curves were used to compare the cumulative morbidity incidence between the groups. Cox proportional hazards model was used to control for confounders. During the study period, 161,793 deliveries met the inclusion criteria. Of them, 14.1% (n = 22,851) occurred in parturient following a short IPI, 78.6% (n = 127,146) following an intermediate IPI, and 7.3% (n = 11,796) following a long IPI. Total hospitalizations of the offspring, involving cardiovascular morbidity, were comparable between the groups. The Kaplan–Meier survival curves demonstrated similar cumulative incidences of cardiovascular morbidity in all groups. In a Cox proportional hazards model, short and long IPI did not appear as independent risk factors for later pediatric cardiovascular morbidity of the offspring (adjusted HR 0.97, 95% CI 0.80–1.18; adjusted HR 1.01, 95% CI 0.83–1.37, for short and long IPI, respectively). In our population, extreme IPIs do not appear to impact long-term cardiovascular hospitalizations of offspring.

scholarly journals Nutritional predictors of mortality in prevalent peritoneal dialysis patients.

2016 ◽  
Vol 63 (1) ◽  
Author(s):  
Sylwia Malgorzewicz ◽  
Michal Chmielewski ◽  
Malgorzata Kaczkan ◽  
Paulina Borek ◽  
Monika Lichodziejewska-Niemierko ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Total Cholesterol ◽  
Body Mass ◽  
Survival Curve ◽  
Skinfold Thickness ◽  
Predictors Of Mortality ◽  
Model Following ◽  
Kaplan Meier ◽  
Independent Association ◽  
Cox Analysis

Malnutrition remains one of the major predictors of mortality in peritoneal dialysis (PD) patients. The aim of the study was to evaluate the nutritional status of prevalent PD patients, and to determine the best predictors of outcome among anthropometric and laboratory indices of nutrition. The study included 106 prevalent PD patients from a single university-based unit. Anthropometric assessment at baseline included: body mass, body mass index (BMI), skinfold thickness, lean body mass (LBM), content of body fat (%F), mid-arm muscle circumference (MAMC). Laboratory analysis comprised of albumin and total cholesterol. Additionally, each patient underwent a subjective global assessment (SGA). The patients were followed for 36 months. Survival analyses were made with the Kaplan-Meier survival curve and the Cox proportional hazard model. Following SGA, malnutrition was diagnosed in 30 (28%) patients. Importantly, eight of the malnourished patients (27%) were nevertheless overweight or obese. Body weight and BMI showed complete lack of association with the outcome. In Kaplan-Meier analysis low: LBM, MAMC, albumin and cholesterol were significantly related to mortality. Cox analysis revealed that, following adjustment, LBM below median was independently associated with poor outcome (hazard ratio [HR] 3.15, 95% confidence interval [CI] 1.17-8.49, p=0.02). Moreover, the lowest quartile of total cholesterol showed independent association with mortality (HR 8.68, CI 2.14-35.21, p

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