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ClinicalTrials.gov Identifier: NCT01681498
(Indeterminate performance during the first half of the trial.)
Beat-to-beat fetal heart rate will be compared to the Doppler result. [ Time Frame: 2 years ]
Beat-to-beat fetal heart rate will be compared to the Doppler result using Pearson Correlation. Timing of PR, QT, and QS, if visible, will be compared with published normative values from the neonatology literature as these values are not otherwise obtainable in an ongoing pregnancy.
Secondary Outcome Measures
Evaluate the presence of other fECG intervals. [ Time Frame: 2 years ]
The fECG Separation Algorithm used in this research incorporates the filtering of noise of very high level as compared with the signal to be retrieved , in combination with employment of SVD (Singular Value Decomposition) methods.
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Ages Eligible for Study:
18 Years and older (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Prenatal care clinic
Subjects must be pregnant women at least 18 years of age.
Subject's fetus must be between the gestational ages of 16 weeks and term.
Subjects must be able to tolerate 20 minutes (per fetus for which trans-abdominal ECG and Doppler ultrasounds will be performed) in the supine position.
Subjects are willing to provide informed consent and are willing to participate in all procedures necessary to complete the study.
Subjects must not have a physical or mental condition, in the opinion of the investigator, which will limit their ability to provide adequate consent.