ClinicalTrials.gg
CompletedNCT00775983DvLUpdated Nov 14, 2013Results posted

Dilapan Versus Laminaria

An interventional study of laminaria and Dilapan-S in Cervical Preparation, sponsored by University of California, San Francisco. Completed at 1 site in United States. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-11-14.

Sponsored by University of California, San Francisco · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
72
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

This is a randomized, blinded clinical trial comparing overnight laminaria versus same-day Dilapan for cervical preparation for surgical abortions occurring between fourteen and eighteen weeks gestation. Comparisons will be made between procedure time, need for additional dilation, occurrence of complications, and patient and provider satisfaction.

Hypothesis:

Cervical preparation for surgical abortion, between fourteen and eighteen weeks gestation, with same-day Dilapan is non-inferior to cervical preparation with overnight laminaria within a five-minute difference.

Primary objective:

Determine differences in procedure times

Secondary objectives:

Examine complications, and need for additional dilation between early second-trimester surgical abortions performed after cervical preparation with same-day Dilapan versus those performed after cervical preparation with overnight laminaria

02

Conditions studied

  • Cervical Preparation
03

In context

Lead sponsor

University of California, San Francisco is the lead sponsor of 2,164 studies on the registry; 368 are open to participants now.

Of its 267 completed or terminated interventional studies of FDA-regulated products, 199 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Pregnancy between fourteen and eighteen weeks gestation
  • Request for elective abortion and certainty of decision to proceed

Exclusion criteria

Exclusion Criteria:

  • Incarceration
  • Minor status (women younger than eighteen years)
  • Allergy to Dilapan or laminaria
  • Inability to speak and understand Spanish or English
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
72 participants (actual)

Study arms

  • Active comparator
    laminaria

    laminaria placed for cervical dilation; usual standard of care in study clinic

    Device: laminaria

  • Experimental
    Dilapan-S

    experimental treatment

    Device: Dilapan-S

Interventions

  • Devicelaminaria

    place device in cervix for dilation

  • DeviceDilapan-S

    Place in cervix for dilation.

06

What researchers measure

Primary outcomes

  1. Procedure Time

    Procedure time to complete early second-trimester dilation and evacuation (D\&E)

    Time frame: Day of procedure

Secondary outcomes

  1. Participants Who Experienced Complications or Need for Additional Dilation

    Any complications, or mechanical dilation required, for early second-trimester surgical abortions performed after cervical preparation with same-day Dilapan versus those performed after cervical preparation with overnight laminaria

    Time frame: Day of procedure

07

Results

Posted Jul 17, 2013
Limitations and caveats
-inadequate power to compare complications directly between study groups. Procedure time was chosen as a proxy for procedural difficulty and thus potential complications

Participant flow

Women were recruited for the study at the Women's Options Center at San Francisco General Hospital (SFGH) between October 2008 and February 2010. SFGH is San Francisco's county hospital and serves a diverse and mostly uninsured population.

Participant flow — Overall Study
MilestoneLaminariaDilapan-S
Started3636
Completed3534
Not completed12
Withdrew: Protocol violation12

Outcome measures

PrimaryProcedure Time

Procedure time to complete early second-trimester dilation and evacuation (D\&E)

Time frame:
Day of procedure
Reported as:
Mean · minutes
Procedure Time
minutesOvernight LaminariaDilapan-S
Procedure Time5.9 ± 2.98.1 ± 5.5
Statistical analysis
  • Overnight Laminaria vs Dilapan-S · t-test, 2 sided · Mean difference (final values): 2.1 · 97.5% CI -0.3 to 4.5
SecondaryParticipants Who Experienced Complications or Need for Additional Dilation

Any complications, or mechanical dilation required, for early second-trimester surgical abortions performed after cervical preparation with same-day Dilapan versus those performed after cervical preparation with overnight laminaria

Time frame:
Day of procedure
Reported as:
Number · participants
Participants Who Experienced Complications or Need for Additional Dilation
participantsOvernight LaminariaDilapan-S
Bleeding requiring uterotonics107
Reaspiration23
Cervical laceration10
Additional dilation822

Adverse events

Collected over Day of procedure and one-week follow-up. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Laminaria—0/35 (0%)0/35 (0%)
Dilapan-S—0/34 (0%)0/34 (0%)

Baseline characteristics

Of 72 eligible and enrolled participants, 3 were excluded from analysis because they did not receive an abortion (2 in the Same-day Dilapan-S group, and 1 in the Overnight laminaria group).

Age, Categorical
Age, Categorical(Participants)LaminariaDilapan-STotal
<=18 years123
Between 18 and 65 years343266
>=65 years000
Age Continuous
Age Continuous(years)LaminariaDilapan-STotal
Mean24 ± 727 ± 626 ± 6
Sex: Female, Male
Sex: Female, Male(Participants)LaminariaDilapan-STotal
Female353469
Male000
Region of Enrollment
Region of Enrollment(participants)LaminariaDilapan-STotal
United States353469
08

Study locations

1 site
  • San Francisco General Hospital
    San Francisco, California 94110, United States
09

References and documents

Publications

  • Newmann SJ, Sokoloff A, Tharyil M, Illangasekare T, Steinauer JE, Drey EA. Same-day synthetic osmotic dilators compared with overnight laminaria before abortion at 14-18 weeks of gestation: a randomized controlled trial. Obstet Gynecol. 2014 Feb;123(2 Pt 1):271-278. doi: 10.1097/AOG.0000000000000080. PubMed 24402587 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 14, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00775983
Responsible party
Eleanor Drey, MD (Associate Professor, University of California, San Francisco) — Principal investigator
First posted
Oct 20, 2008
Start date
Oct 2008
Primary completion
Dec 2009
Completion
Dec 2009
Results posted
Jul 17, 2013
Last update
Nov 14, 2013

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2013. You cannot join it, but the record below documents what was studied.

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