Imperial College London

DrRaviVaidyanathan

Faculty of EngineeringDepartment of Mechanical Engineering

Senior Lecturer in Bio-Mechatronics
 
 
 
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Contact

 

+44 (0)20 7594 7020r.vaidyanathan CV

 
 
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Location

 

717City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lai:2019:10.1080/14767058.2018.1540584,
author = {Lai, J and Nowlan, NC and Vaidyanathan, R and Visser, GHA and Lees, CC},
doi = {10.1080/14767058.2018.1540584},
journal = {J Matern Fetal Neonatal Med},
pages = {1--6},
title = {The use of actograph in the assessment of fetal well-being.},
url = {http://dx.doi.org/10.1080/14767058.2018.1540584},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - PURPOSE: Third trimester maternal perception of fetal movements is often used to assess fetal well-being. However, its true clinical value is unknown, primarily because of the variability in subjective quantification. The actograph, a technology available on most cardiotocograph machines, quantifies movements, but has never previously been investigated in relation to fetal health and existing monitoring devices. The objective of this study was to quantify actograph output in healthy third trimester pregnancies and investigate this in relation to other methods of assessing fetal well-being. METHODS: Forty-two women between 24 and 34 weeks of gestation underwent ultrasound scan followed by a computerized cardiotocograph (CTG). Post capture analysis of the actograph recording was performed and expressed as a percentage of activity over time. The actograph output results were analyzed in relation to Doppler, ultrasound and CTG findings expressed as z-score normalized for gestation. RESULTS: There was a significant association between actograph output recording and estimated fetal weight Z-score (R = 0.546, p ≤ .005). This activity was not related to estimated fetal weight. Increased actograph activity was negatively correlated with umbilical artery pulsatility index Z-score (R = -0.306, p = .049) and middle cerebral artery pulsatility index Z-score (R = -0.390, p = .011). CONCLUSION: Fetal movements assessed by the actograph are associated both with fetal size in relation to gestation and fetoplacental Doppler parameters. It is not the case that larger babies move more, however, as the relationship with actograph output related only to estimated fetal weight z-score. These findings suggest a plausible link between the frequency of fetal movements and established markers of fetal health. RATIONALE The objective of this study was to quantify actograph output in healthy third trimester pregnancies and investigate this in relation to other methods of assess
AU - Lai,J
AU - Nowlan,NC
AU - Vaidyanathan,R
AU - Visser,GHA
AU - Lees,CC
DO - 10.1080/14767058.2018.1540584
EP - 6
PY - 2019///
SP - 1
TI - The use of actograph in the assessment of fetal well-being.
T2 - J Matern Fetal Neonatal Med
UR - http://dx.doi.org/10.1080/14767058.2018.1540584
UR - https://www.ncbi.nlm.nih.gov/pubmed/30835578
UR - http://hdl.handle.net/10044/1/69439
ER -