Fetal behavioral dynamics in cephalic versus breech presentations

Gonçalves, Hernâni; Ayres-de-Campos, Diogo; Bernardes, João

doi:10.1002/dev.21242

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…Even when twins are considered, sex differences were found both by linear and non-linear indices ( 184 ). Fetal presentation at birth has also been studied ( 185 , 186 ). Reports are stating that breech fetuses have worse neurological outcomes compared to cephalic presentation ones ( 187 , 188 ).…”

Section: Resultsmentioning

confidence: 99%

“…Although Park et al ( 185 ) found no significant differences between fetuses with different fetal presentation using spectral and complexity measures such as Lempel-Ziv complexity, ApEn, SampEn, and CD. Gonçalves et al ( 186 ) found differences not only using linear indices but also with non-linear and spectral ones. This example of contrasting results reflects the difficulty and complexity of the fetal assessment.…”

Section: Discussionmentioning

confidence: 99%

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Non-linear Methods Predominant in Fetal Heart Rate Analysis: A Systematic Review

et al. 2021

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The analysis of fetal heart rate variability has served as a scientific and diagnostic tool to quantify cardiac activity fluctuations, being good indicators of fetal well-being. Many mathematical analyses were proposed to evaluate fetal heart rate variability. We focused on non-linear analysis based on concepts of chaos, fractality, and complexity: entropies, compression, fractal analysis, and wavelets. These methods have been successfully applied in the signal processing phase and increase knowledge about cardiovascular dynamics in healthy and pathological fetuses. This review summarizes those methods and investigates how non-linear measures are related to each paper's research objectives. Of the 388 articles obtained in the PubMed/Medline database and of the 421 articles in the Web of Science database, 270 articles were included in the review after all exclusion criteria were applied. While approximate entropy is the most used method in classification papers, in signal processing, the most used non-linear method was Daubechies wavelets. The top five primary research objectives covered by the selected papers were detection of signal processing, hypoxia, maturation or gestational age, intrauterine growth restriction, and fetal distress. This review shows that non-linear indices can be used to assess numerous prenatal conditions. However, they are not yet applied in clinical practice due to some critical concerns. Some studies show that the combination of several linear and non-linear indices would be ideal for improving the analysis of the fetus's well-being. Future studies should narrow the research question so a meta-analysis could be performed, probing the indices' performance.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Non-linear Methods Predominant in Fetal Heart Rate Analysis: A Systematic Review

et al. 2021

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“…Currently, fetal well-being and development are widely assessed by measuring fetal heart rate (HR) and HR variability (HRV) ( Gonçalves et al, 2006a ; Gonçalves et al, 2013 ; DiPietro et al, 2015 ). Fetal HR and HRV change throughout gestation ( DiPietro et al, 2015 ) and they were found to be affected by fetal presentation ( Gonçalves et al, 2014 ), fetal gender ( Tendais et al, 2015 ), fetal health ( Gonçalves et al, 2006b ; Gonçalves et al, 2018 ), and fetal behavioral states ( Nijhuis et al, 1982 ; Gonçalves et al, 2007 ). Fetal HR and HRV were also found to be influenced by different maternal-related factors such as respiration ( Leeuwen et al, 2009 ), weight ( Husin et al, 2020 ), exercise ( Leeuwen et al, 2014 ; May et al, 2016 ), and sleep ( Dipietro et al, 2021 ), however, the mechanisms underlying such influences are not fully understood yet.…”

Section: Introductionmentioning

confidence: 99%

Similarities between maternal and fetal RR interval tachograms and their association with fetal development

et al. 2022

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An association between maternal and fetal heart rate (HR) has been reported but, so far, little is known about its physiological implication and importance relative to fetal development. Associations between both HRs were investigated previously by performing beat-by-beat coupling analysis and correlation analysis between average maternal and fetal HRs. However, studies reporting on the presence of similarities between maternal and fetal HRs or RR intervals (RRIs) over the short term (e.g., 5-min) at different gestational ages (GAs) are scarce. Here, we demonstrate the presence of similarities in the variations exhibited by maternal and fetal RRl tachograms (RRITs). To quantify the same similarities, a cross-correlation (CC) analysis between resampled maternal and fetal RRITs was conducted; RRITs were obtained from non-invasive electrocardiogram (ECG). The degree of similarity between maternal and fetal RRITs (bmfRRITs) was quantified by calculating four CC coefficients. CC analysis was performed for a total of 330 segments (two 5-min segments from 158 subjects and one 5-min from 14 subjects). To investigate the association of the similarity bmfRRITs with fetal development, the linear correlation between the calculated CC coefficients and GA was calculated. The results from the latter analysis showed that similarities bmfRRITs are common occurrences, they can be negative or positive, and they increase with GA suggesting the presence of a regulation that is associated with proper fetal development. To get an insight into the physiological mechanisms involved in the similarity bmfRRITs, the association of the same similarity with maternal and fetal HR variability (HRV) was investigated by comparing the means of two groups in which one of them had higher CC values compared to the other. The two groups were created by using the data from the 158 subjects where fetal RRI (fRRI) calculation from two 5-min ECG segments was feasible. The results of the comparison showed that the maternal very low frequency (VLF) HRV parameter is potentially associated with the similarity bmfRRITs implying that maternal hormones could be linked to the regulations involved in the similarity bmfRRITs. Our findings in this study reinforce the role of the maternal intrauterine environment on fetal development.

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“…Factors increasing the risks of breech presentation are low birth weight and gestational age , advanced maternal age, a scarred uterus, female sex of baby and a fetus with congenital malformations (2). It also has associated obstetrical complications like prolapse of umbilical cord, head entrapment, injury to brain, skull and internal organs and intrapartum hemorrhage (3). Maternal complications with breech presentation include increased operative vaginal delivery, perineal trauma, anesthesia complications and increased risk of sepsis (4).…”

Section: Introductionmentioning

confidence: 99%

Fetomaternal Outcomes of Breech Presentation in Labour

Karim¹,

Sethi²,

Khurshida

et al. 2022

Pak Euro. J. Med & LS

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The purpose of our study was to determine the Fetomaternal outcomes of breech presentations in labour at term. The study was carried out in department of obstetrics and gynaecology, Hayatabad medical complex, MTI, Peshawar. This study included 140 women presenting with breech presentations at term in labour. They were watched for progress of labour and allowed to deliver vaginally or through caesarean section if required. Both vaginal deliveries and caesarean sections were performed by trained medical officers have experience of more than 3 years in teaching hospital. APGAR score of the newborns was noted at 1 & 5 minutes by an accompanied consultant pediatrician having at least 3 years of experience. All the data was collected on a proforma. Maternal outcomes were classified as Breech vaginal delivery or emergency caesarean section. APGAR scores of the neonates at 1 and then 5 minutes interval was used for neonatal outcome. Results showed vaginal breech delivery in 70% women while 30% women had caesarean sections. The APGAR score of majority of babies i.e. 93% was >7 while 7% of babies were born with APGAR score of <7.

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Fetal behavioral dynamics in cephalic versus breech presentations

Cited by 6 publications

References 20 publications

Non-linear Methods Predominant in Fetal Heart Rate Analysis: A Systematic Review

Non-linear Methods Predominant in Fetal Heart Rate Analysis: A Systematic Review

Similarities between maternal and fetal RR interval tachograms and their association with fetal development

Fetomaternal Outcomes of Breech Presentation in Labour

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