Journal article
Determination of fetal heart rate short-term variation from umbilical artery Doppler waveforms
LS Cahill, G Stortz, A Ravi Chandran, N Milligan, S Shinar, CL Whitehead, SR Hobson, S Millard, CK Macgowan, JC Kingdom, JG Sled, AA Baschat
Ultrasound in Obstetrics and Gynecology | WILEY | Published : 2021
DOI: 10.1002/uog.23145
Abstract
Objective: To evaluate the feasibility of using umbilical artery (UA) Doppler waveforms to measure fetal heart rate (FHR) short-term variation (STV) across gestation. Methods: This was a prospective longitudinal study, conducted at two study sites, of 195 pregnancies considered low risk. Pulsed-wave Doppler of the UAs was performed at 4-weekly intervals, between 14 and 40 weeks of gestation, using a standardized imaging protocol. Up to 12 consecutive UA Doppler waveforms were analyzed using offline processing software. FHR STV was calculated using average R–R intervals extracted from the waveforms and baseline corrected for FHR. Results: Baseline-corrected FHR STV increased significantly wit..
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Awarded by National Institute of Child Health and Human Development
Funding Acknowledgements
We thank the women who participated in the study. Funding for this work was provided by the Eunice Kennedy Shriver National Institute of Child Health and Human Development of Health Grant U01-087177-01.