Complex and irregular heart rate dynamics in fetuses compromised by maternal anemia as a high-risk pregnancy

2015 ◽  
Vol 43 (6) ◽  
Author(s):  
Young-Sun Park ◽  
Jeong-Kyu Hoh
Keyword(s):  
Heart Rate ◽  
High Risk ◽  
Approximate Entropy ◽  
Risk Groups ◽  
Adverse Outcomes ◽  
Maternal Anemia ◽  
Risk Pregnancy ◽  
Heart Rate Dynamics ◽  
Study Population ◽  
Normal Controls

AbstractTo examine how complex and irregular fetal heart rate (FHR) dynamics differ between fetuses of normal pregnancies and those of pregnancies complicated by maternal anemia (MA), and to place this in the context of high-risk pregnancies.Our study population consisted of 97 pregnant women affected by MA, 118 affected by pregnancy-induced hypertension (PIH), 88 affected by gestational diabetes mellitus (GDM), 53 with preterm premature rupture of membranes (pPROM), and 356 normal pregnancies as controls. We calculated approximate entropy (ApEn), sample entropy (SampEn), and correlation dimension (CD) to quantify irregularity and the chaotic dynamics of each FHR time series.The ApEn in the fetuses of the MA and PIH groups was significantly lower than that of the normal controls (P<0.05). The SampEn was significantly lower in the high-risk groups, except for the pPROM group, than in the normal controls (P<0.05). The CD in the PIH and severe MA groups was significantly lower than that of the normal controls (P<0.05, respectively). In the MA group, the dynamic indices showed a highly significant positive correlation with hemoglobin (Hb) levels (P<0.0001).The decreased complexity and/or irregularity in the FHR from pregnancies with MA may reflect abnormalities in the complex, integrated cardiovascular control. The irregularity and complexity of the FHR increased together with Hb levels in pregnancies with MA. Our data suggest that the integrity of the nervous system in the fetuses compromised by severe MA might result directly in adverse outcomes.

The evaluation of continuous fetal heart rate monitoring in high-risk pregnancy

1976 ◽  
Vol 125 (3) ◽  
pp. 310-320 ◽  
Author(s):  
Albert D. Haverkamp ◽  
Horace E. Thompson ◽  
John G. McFee ◽  
Curtis Cetrulo
Keyword(s):  
Heart Rate ◽  
High Risk ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
High Risk Pregnancy ◽  
Heart Rate Monitoring ◽  
Fetal Heart Rate Monitoring ◽  
Risk Pregnancy

Fetal monitoring during labour

2020 ◽  
pp. 339-351
Author(s):  
Vikram Sinai Talaulikar ◽  
Sabaratnam Arulkumaran
Keyword(s):  
Heart Rate ◽  
Metabolic Acidosis ◽  
High Risk ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Monitoring ◽  
Adverse Outcomes ◽  
Low Risk ◽  
Fetal Heart Rate Monitoring ◽  
Fetal Surveillance

The process of labour and delivery can be a hazardous journey for the fetus. The principal aim of monitoring a fetus during labour is to detect changes in the fetal heart rate that suggest a possibility of fetal hypoxia and metabolic acidosis so that timely action can be taken to prevent adverse outcomes. For the last four decades, intrapartum monitoring of fetuses has been commonly performed by either intermittent auscultation or electronic fetal heart rate monitoring (EFM). While intermittent auscultation has been the method of choice in low-risk pregnancies and in settings with limited resources, continuous EFM by cardiotocography has formed the mainstay of fetal surveillance in high-risk pregnancies in most of the high-resourced countries. The terminology, classification, and threshold for intervention with the use of EFM are discussed and adjunct technologies that support the use of EFM are also considered.

Psychophysiological correlates of empathy and prosocial behaviors in preschool children with behavior problems

1995 ◽  
Vol 7 (1) ◽  
pp. 27-48 ◽  
Author(s):  
Carolyn Zahn-Waxler ◽  
Pamela M. Cole ◽  
Jean Darby Welsh ◽  
Nathan A. Fox
Keyword(s):  
Heart Rate ◽  
Preschool Children ◽  
High Risk ◽  
Behavior Problems ◽  
Prosocial Behavior ◽  
Risk Groups ◽  
Empathic Concern ◽  
Prosocial Behaviors ◽  
Autonomic Activity ◽  
Psychophysiological Correlates

AbstractThis study focused on empathic and prosocial orientations in preschool children who vary in externalizing problems. Children were categorized as low, moderate, or high risk for developing disruptive behavior disorders, depending on severity of current behavior problems. Hypothetical and real encounters with others in distress were used to examine children's affect, behavior, autonomic activity, and social cognitions. When children witnessed someone in distress, empathic concern and prosocial behaviors were present at similar levels for all risk groups. However, moderate and high-risk children were less able than low-risk children to remain positively engaged with distress victims. Girls showed more prosocial behavior than boys, and boys showed more anger than girls. During sadness mood inductions to assess autonomic activity, risk groups did not differ on heart rate or vagal tone. Girls showed higher skin conductance than boys, with high-risk girls showing the highest levels. Higher heart rate (and heart rate deceleration) predicted empathic concern and prosocial behavior, whereas lower heart rate was associated with aggression and avoidance, irrespective of risk. Although biological correlates of emotions and behaviors that reflect caring versus indifference to others' distress are identified, they do not support an early direct link to externalizing psychopathologies.

Association between immunoreactivity to Anisakis spp. antigens and high-risk pregnancy

2015 ◽  
Vol 60 (4) ◽  
Author(s):  
Israel Figueiredo ◽  
Mauricio Vericimo ◽  
Luciana Terra ◽  
Taylane Ferreira ◽  
Sergio Carmona São Clemente ◽  
...  
Keyword(s):  
High Risk ◽  
Fish Intake ◽  
High Risk Pregnancy ◽  
Postpartum Women ◽  
Risk Pregnancy ◽  
Study Population ◽  
Species Specific ◽  
Noninterventional Study ◽  
Low Prevalence ◽  
Anisakis Spp

AbstractNumerous factors contribute to perinatal risk, many of which remain undefined. This study sought to determine the frequency of fish intake in postpartum women, and to establish a relationship between the rates of immunoreactivity for antigens from Anisakis spp. and high-risk pregnancy. In this prospective noninterventional study, a structured questionnaire was administered and serum was collected from postpartum women at two perinatal centers (a high-risk birth unit [HRBU] and a low-risk birth unit [LRBU]) in the Niteroi municipality of Brazil. Anisakis species-specific IgG and IgE were measured by ELISA. The chisquared test was performed, and odds ratios (ORs) with their 95% confidence intervals were estimated. The t-test or Mann-Whitney test was applied to continuous, normally distributed variables. In total, 309 women (170 from HRBU, 139 from LRBU) between 24.8 and 26.7 years old with a median of 6 to 8 prenatal visits were enrolled. Women in the two units exhibited differences in some variables, including prenatal care (p = 0.01), maternal and fetal risk (p = 0.00; OR = 6.17), and gestational age (p = 0.00), but no differences in fish consumption (p = 0.29), frequency of fish intake (p = 0.40), allergic symptoms (p = 0.51), or frequency of anti-Anisakis reactivity (p = 0.22). Logistic regression analysis revealed that only age was independently associated with postpartum anti-Anisakis reactivity. This study confirmed a low prevalence of fish intake and suggested that Anisakis spp. had no impact on high-risk pregnancies among this postpartum study population.

scholarly journals Heart rate complexity during the temporary systems dedifferentiation

2017 ◽  
Vol 10 (2) ◽  
pp. 114-130 ◽  
Author(s):  
A.V. Bakhchina ◽  
Y.I. Aleksandrov
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
System Organization ◽  
Approximate Entropy ◽  
Heart Cells ◽  
Functional Systems ◽  
Heart Rate Dynamics ◽  
Heart Rate Complexity ◽  
Degree Of Differentiation ◽  
Stress Experiment

The article describes the results of a study of correlation between parameters of heart rate variability and characteristics of system organization of behavior, which is considered as the dynamic actualization of functional systems of different “age”. The proportion of “old” (low-differentiated) and “new” (high-differentiated) systems defines the general degree of differentiation of the set of functional systems actualized in particular behavior. Heart rate variability reflects the coordination of activity of heart cells and other body cells. This coordination is the important for achieving adaptive behavioral results. We hypothesized that temporary system dedifferentiation (reversible decreasing the number of highly differentiated systems subserving behavior) is accompanied by reduction of heart rate complexity. Beat-to-beat intervals were recorded during stress (Experiment 1) and alcohol administration (Experiment 2). We used approximate entropy (ApEn) as a measure of heart rate complexity. The decrease of approximate entropy was observed in both stress and alcohol conditions. It is concluded that reversible system dedifferentiation is reflected in heart rate dynamics as a reduction of complexity.

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