Correlation of Maternal Stress Because of Positive Aneuploidy Screening Serum Analytes and Uterine Arteries' Doppler Ultrasound Index: A Prospective Cohort Study

Anxiety and Uterine Artery Doppler Flow in A Population of Pregnant Women of High Risk Down Syndrome Fetus: A Prospective Cohort Study

BACKGROUND

Fetal exposure to maternal anxiety is associated with low birth weight and maternal stress may be led to constriction of uterine arteries. This study compared the relation of anxiety and uterine artery doppler flow indices in pregnant women with the high and low-risk of Down syndrome.

MATERIALS AND METHODS

This prospective cohort study was conducted among pregnant women in the second trimester that were classified as having a high or low risk according to their prenatal aneuploidy screening outcome. The high risk group underwent amniocentesis. Anxiety was initially assessed using the Spielberger State-Anxiety Inventory (STAI) and uterine artery blood flow indices were evaluated 2 times for the both groups. For the high-risk group first: immediately before amniocentesis and second: after two weeks follow up, when receiving the karyotype results and for the low-risk group in the first admission and two weeks later.

RESULTS

Totally, 375 pregnant women participated in our study that sorted into 2 risk populations based on the aneuploidy screening test, low-risk=176 and high-risk women=199. The high-risk group for Down syndrome amniocentesis showed abnormal results in the 23 cases (23/199). The mean state (P=0.003) and trait (P=0.033) of the Anxiety Inventory scores were significantly different between the groups. Baseline uterine artery indices were no significant difference between the groups. Baseline Uterine artery indices in the high-risk group was significantly different with follow-up (in both positive-amniocentesis and negative amniocentesis sub-groups) indices. Also, there was a weak and significant correlation in the uterine resistance index and STAI scores (P=0.008, r=0.137) during the follow-up period.

CONCLUSION

All pregnant women experienced high level anxiety, especially in the high-risk group that may reduce after confirmation of prenatal aneuploidy screening test and also affects the Doppler indices. For all pregnant women; Stress management and emotional support training is recommended before and during pregnancy.

Evaluation of the effect of education on perceived stress of mother candidates for amniocentesis

BACKGROUND

Amniocentesis is one of the methods for diagnosing prenatal abnormalities. Pregnant women with high-risk fetal screening results are the candidates for amniocentesis. Most of these women are afraid of this procedure because they predict that the test will be painful and worried about its adverse effects on pregnancy, fetal injury, or the risk of maternal death. Therefore, the aim of this study was to determine the effect of education on the perceived stress of mothers who are the candidates for amniocentesis.

MATERIALS AND METHODS

The present study was a quasi-experimental, two-group clinical trial with a parallel design. This study was in three stages: pretest (before intervention), posttest (after intervention), and after amniocentesis. This study was performed on 80 pregnant women who were the candidates for amniocentesis (15-20 weeks of pregnancy) with high-risk fetal screening results referred to the perinatology clinic in Yazd in 2020. The intervention package included training and using breathing techniques, broadcasting educational animations on how to perform amniocentesis, expressing experiences by people who had experienced amniocentesis, and finally visiting the amniocentesis site and getting to know the relevant perinatologist. Data collection tools were demographic and midwifery profile questionnaires and Cohen perceived stress. SPSS software version 16 was used for statistical analysis of data.

RESULTS

The results showed that the research units had high stress at the beginning of the study. The perceived stress score at the beginning of the study in the intervention group was 30.1750 ± 6.53153 and in the control group was 28.2750 ± 8.57841. After the intervention, the participants' stress level decreased below the cutting point. In the experimental group, the mean stresses after the intervention and after amniocentesis were significantly lower than before the intervention; however, after amniocentesis, it was somewhat higher than the postintervention stage. In the preintervention stage, the mean stress score between the two groups was not statistically significant. The difference after the intervention between the two groups was significant (P < 001.0); however, in the postamniocentesis stage, the difference in stress was not significant. After the intervention and after amniocentesis, the perceived stress of pregnant mothers in the experimental group was less than the control group.

CONCLUSION

Considering that the perceived stress in amniocentesis candidate mothers was high in the present study, so that after performing the method, mothers left the center with high stress, it is very important to pay attention to its psychological aspects. Therefore, it is suggested that educational interventions before and during amniocentesis be considered for them along with psychological support and follow-up care after amniocentesis.

Adverse Pregnancy Outcomes Following the Assassination of John F. Kennedy in 1963

INTRODUCTION

Women exposed to stressful events during pregnancy are thought to be at increased risk of adverse birth outcomes. However, studies investigating stressful events are often unable to control for important confounders, such as behavioral and genetic characteristics, or to isolate the impact of the stressor from other secondary effects. We used a discordant-sibling design, which provides stronger inferences about causality, to examine whether a widespread stressor with limited impact on day-to-day life (John F. Kennedy assassination) resulted in an increased risk of adverse birth outcomes.

METHODS

Data were obtained from the Collaborative Perinatal Project, a prospective, multi-site cohort study conducted in the US from 1959 to 1965. Our analysis was restricted to singleton live births ≥24 weeks born before the assassination (n = 24,406) or in utero at the time (n = 5833). We also evaluated associations within siblings discordant for exposure (n = 1144). We used survival analysis to evaluate associations between exposure and preterm birth and marginal models to evaluate associations with birthweight and placental pathology.

RESULTS

First trimester exposure was associated with preterm birth (hazard ratio (HR): 1.17; 95% CI: 1.05, 1.31). In the discordant-sibling model, the point estimate was similar (HR: 1.22; 95% CI: 0.36, 4.06). Third trimester exposure was associated with increased odds of fetal acute inflammation in the placenta (odds ratio (OR): 1.34, 95% CI: 1.05, 1.71).

CONCLUSIONS FOR PRACTICE

First trimester exposure to an acute stressor was associated with preterm birth. We did not observe increased odds of placental pathology with first trimester exposure; however, stress may increase preterm birth risk through chronic placental inflammation, which was not evaluated in this sample.