Fetal EEG during vacuum extraction delivery with a special plastic ventouse

Area of Science:

• Obstetrics and Gynecology
• Neuroscience
• Biomedical Engineering

Background:

• Fetal well-being monitoring during operative vaginal delivery is crucial.
• Vacuum extraction is a common obstetric procedure.
• Current methods for assessing fetal neurological status during delivery are limited.

Purpose of the Study:

• To describe and evaluate a novel plastic vacuum extractor cup with integrated silver electrodes.
• To assess the feasibility of recording fetal electroencephalography (EEG) and electrocardiography (ECG) during vacuum-assisted delivery.
• To investigate the impact of vacuum extraction traction on fetal cerebral activity.

Main Methods:

• Development of a plastic vacuum extractor cup with percutaneous silver electrodes.
• Mechanical property testing of the vacuum cup.
• In vitro and in vivo testing of electrodes on an infant.
• Recording fetal EEG and ECG during actual vacuum extraction deliveries.
• Analysis of EEG changes before, during, and after traction.

Main Results:

• The vacuum extractor cup demonstrated suitable mechanical properties.
• Satisfactory EEG and ECG recordings were obtained from the integrated electrodes.
• Technically acceptable fetal EEG was recorded between, but not during, traction periods.
• Vacuum extraction traction led to a generalized reduction in EEG amplitude and slow wave activity.

Conclusions:

• The described plastic vacuum extractor cup with EEG electrodes is a potentially valuable tool.
• It may aid in studying fetal cerebral function during vacuum-assisted delivery.
• Further research is warranted to validate its clinical utility in monitoring fetal neurological status.