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Recording available 2/16-5/2
Recording available 2/16-5/2
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Poster Session 2

Category: Ultrasound/Imaging

Poster Session 2

(662) Transvaginal Cervical Length Assessment in Comparing Single Balloon versus Double Balloon Cervical Ripening

Wednesday, February 11, 2026
3:30 PM - 5:00 PM  

    Submitting Author and Presenting Author(s)

  • Satjeet K. Deol Chauhan, MD (she/her/hers)

    OBGYN Resident
    Bronxcare Health System/Icahn School of Medicine at Mount Sinai
    Bronx, New York, United States

    • Coauthor(s)

  • FR

    Faro Revital, MD

    MFM attending
    Bronxcare Health System/Icahn School of Medicine at Mount Sinai
    Bronx, New York, United States

  • Rodney A. McLaren, Jr, MD

    Maternal Fetal Medicine Attending
    Maimonides Medical Center
    Brooklyn, New York, United States

  • FA

    Fouad Atallah, MD

    Maternal Fetal Medicine Attending
    NYP Brooklyn Methodist Hospital
    New York, New York, United States

Objective:

The aim of our study was to evaluate the feasibility of performing a transvaginal cervical length (TVCL) assessment as a more objective measure of cervical effacement in comparing single balloon versus double balloon cervical ripening during induction of labor.

Study Design:

This was a pilot prospective study involving patients undergoing labor induction. After informed consent, the patients underwent either a single balloon foley catheter or double balloon Cook catheter placement. TVCL measurement was performed before the placement of cervical ripening balloon and after balloon expulsion. The primary outcomes were number of patients recruited, change in digital Bishops score, difference in cervical length pre and post cervical balloon ripening, and total cervical ripening balloon time. Secondary outcomes were induction to active labor interval, induction to delivery interval, intrapartum complications, and cesarean delivery. Univariable analyses were performed, and data was presented as median (interquartile range).

Results:

Of the 105 patients approached, 30 (28.6%) were consented. Baseline characteristics did not differ between both the groups. Patients in the double balloon cook catheter group had a higher Bishop score after ripening (Foley: 7 IQR(7,7) vs. Cook: 8 IQR(8, 9); p< 0.001) and TVCL difference (Foley: 1.12 IQR(0.91, 1.3) cm vs. Cook: 1.7 IQR(1.38, 2.19) cm; p< 0.001) than those in the Foley group. However, time to active labor (Foley: 8 IQR(6, 14) hr vs. Cook: 9 IQR(6,12) hr; p=0.945), time to delivery (Foley: 11 IQR(7.5, 21) hr vs. Cook: 15 IQR(10, 20) hr; p=0.575), and cesarean delivery (Foley: 20% vs Cook: 13.3%; p>0.999) did not differ (Table 1).

Conclusion:

TVCL measurement was feasible and may be used as an objective measure of effacement during intrapartum ultrasound assessment. Cervical ripening with double balloon cook catheter resulted in greater effacement, more cervical shortening compared to single balloon foley catheter without significant difference in induction to delivery interval.