Transcervical chorionic villus biopsy with a brush.

Area of Science:

• Obstetrics and Gynecology
• Reproductive Medicine
• Medical Device Technology

Background:

• Transcervical chorionic villi sampling (CVS) is crucial for early prenatal diagnosis.
• Existing methods for CVS can have limitations in ease of use and success rates.

Purpose of the Study:

• To evaluate a novel brush implement for transcervical chorionic villi collection.
• To determine the efficacy, safety, and optimal timing for this new CVS technique.

Main Methods:

• A brush delivered via a metal introducer and cannula set was used for CVS.
• Ultrasound guidance was employed for implement identification and procedure monitoring.
• Collection rates and complication incidence were recorded in 83 patients.

Main Results:

• The brush implement was easy to use and clearly visualized with ultrasound.
• Initial single-attempt collection rate was 65%, improving to 84% with practice.
• Adequate diagnostic material (15 mg wet weight) was obtained in a single sampling.
• No gestation sac perforations occurred; minor bleeding was the only complication.

Conclusions:

• The brush implement is a viable alternative for transcervical chorionic villi sampling.
• The technique demonstrates high success rates and a low complication profile.
• Further investigation is warranted to explore its clinical applications in prenatal diagnostics.