Non-invasive intrapartum fetal ECG: Preliminary report

Taylor, Myles J. O., Thomas, Matthew J., Smith, Mark J., Oseku-Afful, Salome, Fisk, Nicholas M., Green, Andrew R., Paterson-Brown, Sara and Gardiner, Helena M. (2005) Non-invasive intrapartum fetal ECG: Preliminary report. BJOG: An International Journal of Obstetrics & Gynaecology, 112 8: 1016-1021. doi:10.1111/j.1471-0528.2005.00643.x


Author Taylor, Myles J. O.
Thomas, Matthew J.
Smith, Mark J.
Oseku-Afful, Salome
Fisk, Nicholas M.
Green, Andrew R.
Paterson-Brown, Sara
Gardiner, Helena M.
Title Non-invasive intrapartum fetal ECG: Preliminary report
Journal name BJOG: An International Journal of Obstetrics & Gynaecology   Check publisher's open access policy
ISSN 1470-0328
0140-7686
1471-0528
Publication date 2005-08-01
Year available 2005
Sub-type Article (original research)
DOI 10.1111/j.1471-0528.2005.00643.x
Open Access Status DOI
Volume 112
Issue 8
Start page 1016
End page 1021
Total pages 6
Place of publication London, U.K.
Publisher Blackwell
Language eng
Subject 111402 Obstetrics and Gynaecology
1114 Paediatrics and Reproductive Medicine
Abstract Objectives To obtain fetal heart rate, detailed fetal electrocardiography (fECG) signals and uterine contractions during labour using a single device.
Formatted abstract
Objectives: To obtain fetal heart rate, detailed fetal electrocardiography (fECG) signals and uterine contractions during labour using a single device.
Design: Prospective observational study.
Setting: Delivery suite at a tertiary referral hospital, London, UK.
Population: Fifteen patients at median gestation of 39 weeks (range 24–41) were recruited at median cervical dilatation of 4.0 cm (range 0–10) of whom 8/15 (53%) had intact amniotic membranes.
Methods: Using 12 abdominally sited electrodes, we recorded the composite abdominal signal in pregnancies intrapartum. The recorded data were analysed off-line using a blind signal separation technique. Main outcome measures Success of signal separation and fECG time intervals.
Results: Successful fECG signal acquisition was achieved in 12/15 (80%) patients and an averaged fECG waveform acquired. In these patients, P and QRS waves were seen in all cases, and T waves in 11/12 (92%). True beat-to-beat heart rate (HR) was displayed and measures of its variability obtained. The mother's ECG and uterine electrical activity, shown to match tocographically recorded uterine contractions, were also separated and displayed. Failure to acquire fECG in three cases was attributed to excessive abdominal muscular activity and electrical interference.
Conclusions
: This study demonstrates a non-invasive technique that displays detailed intrapartum fECG waveforms, HR variability, maternal ECG and uterine contractions simultaneously, all in a single device and which avoids the potential risks of invasive monitoring with a fetal scalp electrode.
©RCOG 2005 BJOG: an International Journal of Obstetrics and Gynaecology.

Keyword Fetal electrocardiography (fECG)
Uterine contractions
Intrapartum fECG waveforms
HR variability
Q-Index Code C1
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Medicine Publications
 
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Created: Sat, 21 Mar 2009, 01:38:30 EST by Maria Campbell on behalf of Faculty Of Health Sciences