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A longitudinal study investigating cervical changes during labor using a wireless ultrasound device.

Juyoung Kim1, Sukyoung Kim1, Seungjoo Jeon1

  • 1a Department of Obstetrics and Gynecology , Gachon University Gil Hospital , Incheon , South Korea.

The Journal of Maternal-Fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
|June 20, 2017
PubMed
Summary

A new wireless ultrasound (US) device accurately measures cervical dilation and thickness during labor, correlating well with digital vaginal examination (DVE) findings. This technology offers a convenient alternative for assessing labor progression.

Keywords:
Intrapartum sonographySONONcervixtransperinealwireless ultrasound

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Area of Science:

  • Obstetrics and Gynecology
  • Medical Imaging
  • Labor and Delivery

Background:

  • Cervical assessment during labor typically involves digital vaginal examination (DVE) to evaluate dilatation, effacement, position, and consistency.
  • Previous research on cervical changes during labor has primarily focused on cervical dilatation.
  • Assessing cervical effacement and other parameters non-invasively remains an area for technological advancement.

Purpose of the Study:

  • To investigate cervical changes, specifically dilatation and effacement, during labor using a novel wireless ultrasound (US) device.
  • To compare the efficacy of a wireless US device with traditional digital vaginal examination (DVE) for cervical assessment.
  • To explore the potential of intrapartum transperineal sonography for real-time labor monitoring.

Main Methods:

  • A longitudinal study involving 25 women in labor.
  • Serial measurements of cervical dilatation, length, and thickness using a wireless mobile US device (SONON) during intrapartum transperineal sonography.
  • Comparison of US-derived measurements with cervical dilatation and effacement obtained via serial DVEs.

Main Results:

  • Intrapartum sonography demonstrated a strong correlation with DVE in assessing cervical dilatation and thickness (p < .001).
  • The wireless US device proved convenient for use in the labor ward.
  • High failure rates in collecting cervical length images precluded correlation analysis for cervical length and effacement.

Conclusions:

  • A new technique for evaluating cervical effacement using cervical thickness via US was developed.
  • Transperineal intrapartum US measurements of cervical dilation and thickness significantly correlate with DVE findings.
  • Wireless US devices offer convenience in labor wards, but further research is required to establish their definitive role in obstetric care.