Devices for Measuring Cervical Dilation During Labor: Systematic Review and Meta-analysis

Area of Science:

• Medical Devices
• Obstetrics and Gynecology
• Diagnostic Technology

Background:

• Cervical dilation measurement is vital for assessing labor progression.
• Digital examination, the current standard, suffers from inaccuracies and subjectivity.
• Existing methods lack objective and reliable quantification of cervical changes during labor.

Purpose of the Study:

• To systematically review and analyze instruments developed for measuring cervical dilation.
• To evaluate the features, potential, and limitations of various cervimetry devices.
• To identify the most promising technologies for future clinical application in labor monitoring.

Main Methods:

• A systematic review and meta-analysis of relevant literature.
• Searched major databases (Web of Science, PubMed, ClinicalTrials.gov) using keywords related to cervical dilation measurement.
• Selected articles describing the design or clinical application of cervical dilation measurement instruments.

Main Results:

• Twenty-five articles were analyzed and categorized into four groups based on measurement methodology.
• No currently available device has proven suitable for widespread clinical use.
• Obstetricians and gynecologists continue to rely on digital examination for labor assessment.

Conclusions:

• Ultrasound technology presents the most promising avenue for developing accurate and miniaturized cervimetry devices.
• Further research and development are essential to optimize ultrasound-based cervimetry.
• Standardized and validated ultrasound tools could significantly improve labor monitoring accuracy.