CClinicalTrials.gg
CompletedNCT01282723Updated Mar 15, 2011Results posted

Multi-Reader Multi-Case Study to Identify Uterine Contractions Recorded From Laboring Patients by Practicing Clinicians

An observational study in Pregnancy - Labor Monitoring, sponsored by Reproductive Research Technologies, LP. Completed at 3 sites in United States. Open to female participants aged 15 Years to 40 Years. Per ClinicalTrials.gov, last updated 2011-03-15.

Sponsored by Reproductive Research Technologies, LP · Observational

Study type
Observational
Model
Case-only
Time perspective
Cross-sectional
Enrollment
20
Ages
15 Years to 40 Years
Sex
Female
01

Study summary

This multi-reader multi-case study was designed to evaluate the performance of SureCALL® EMG Labor Monitor® (SureCALL®)to the predicate Tocodynamometer device (TOCO) using the performance of an Intrauterine Pressure Catheter device (IUPC) as the "gold standard".

Read the detailed description

The SureCALL® EMG Labor Monitor® (SureCALL®)is a transabdominal electromyography monitor intended to measure intrapartum uterine activity. It is intended for use on term pregnant women who are in labor, with singleton pregnancies, using surface electrodes on the maternal abdomen. The device is intended for use by healthcare professionals in a clinical setting.

This multi-reader multi-case study was designed to evaluate the performance of SureCALL® to the predicate Tocodynamometer device (TOCO) using the performance of an Intrauterine Pressure Catheter device (IUPC) as the "gold standard".

This study involved 20 women at term, in labor, at three clinical sites. Each study subject was instrumented with three technologies for measuring uterine activity:

  1. a tocodynamometer attached to the maternal abdomen
  2. a set of abdominal surface electrodes for uterine electromyography, and
  3. an intrauterine pressure catheter.

An assessment was obtained and quantified from masked, qualified clinical obstetrician readers for the evaluation of the equivalence of the three independent labor monitor devices by identifying in isolation the individual uterine contraction signals and the peak of each contraction signal produced by a full-term patient in term labor as independently collected by each labor monitor device.

02

Conditions studied

  • Pregnancy - Labor Monitoring
03

In context

Lead sponsor

Reproductive Research Technologies, LP is the lead sponsor of 4 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
15 Years to 40 Years
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Women in labor with uncomplicated singleton pregnancies and IUPC indicated with membranes ruptured and sufficient cervical dilation.

Inclusion criteria

  • Singleton Pregnancy
  • Indicated for IUPC
  • Gestational ages from 37 to 41 weeks
  • Informed consent required

Exclusion criteria

Exclusion Criteria:

  • Multifetal pregnancy
  • Not Indicated for IUPC
  • Gestation age below 37 or above 41 weeks
  • Informed consent not given
05

Study design

Observational model
Case-only
Time perspective
Cross-sectional
Enrollment
20 participants (actual)

Groups and cohorts

  • Pregnant, In Labor
06

What researchers measure

Primary outcomes

  1. Comparison of SureCALL® and TOCO Detection of Contraction Events, as Compared to the IUPC, as Identified by Readers

    The presence of contractions measured by the SureCALL®, the presence of contractions measured by the TOCO, and the presence of contractions measured by the IUPC were determined by independent Readers. The Odds Ratio of SureCALL® contractions to IUPC contractions was calculated, and the Odd Ratio of TOCO contractions to IUPC contractions was calculated. Reader Correspondence was determined by a General Linear Mixed Model.

    Time frame: 9 - 42 Minutes

07

Results

Posted Mar 15, 2011

Participant flow

Participant flow — Overall Study
MilestonePregnant, In Labor
Started20
Completed20
Not completed0

Outcome measures

PrimaryComparison of SureCALL® and TOCO Detection of Contraction Events, as Compared to the IUPC, as Identified by Readers

The presence of contractions measured by the SureCALL®, the presence of contractions measured by the TOCO, and the presence of contractions measured by the IUPC were determined by independent Readers. The Odds Ratio of SureCALL® contractions to IUPC contractions was calculated, and the Odd Ratio of TOCO contractions to IUPC contractions was calculated. Reader Correspondence was determined by a General Linear Mixed Model.

Time frame:
9 - 42 Minutes
Reported as:
Number · Odds Ratio
Comparison of SureCALL® and TOCO Detection of Contraction Events, as Compared to the IUPC, as Identified by Readers
Odds RatioPregnant, In Labor
True Positive Fraction1.47 (1.10 to 1.95)
False Positive Fraction0.85 (0.61 to 1.17)
Statistical analysis
  • Pregnant, In Labor · Mixed Models Analysis · p = 0.0093 · Odds ratio (or): 1.47 · 95% CI 1.10 to 1.95
  • Pregnant, In Labor · Mixed Models Analysis · p = 0.3204 · Odds ratio (or): 0.85 · 95% CI 0.61 to 1.17

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pregnant, In Labor—0/20 (0%)0/20 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Pregnant, In Labor
<=18 years2
Between 18 and 65 years18
>=65 years0
Age Continuous
Age Continuous(years)Pregnant, In Labor
Mean24.85 ± 4.38
Sex: Female, Male
Sex: Female, Male(Participants)Pregnant, In Labor
Female20
Male0
Region of Enrollment
Region of Enrollment(participants)Pregnant, In Labor
United States20
08

Study locations

3 sites
  • St.Joseph's Hospital and Medical Center
    Phoenix, Arizona 85013, United States
  • Drexel University College of Medicine
    Philadelphia, Pennsylvania 19102, United States
  • University of Texas Medical Branch
    Galveston, Texas 77555, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 15, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01282723
Lead sponsor
Reproductive Research Technologies, LP
First posted
Jan 25, 2011
Start date
Aug 2008
Primary completion
Jan 2010
Completion
Jan 2010
Results posted
Mar 15, 2011
Last update
Mar 15, 2011

Study contacts

Timothy B Waterhouse, MD
principal investigator · Reproductive Research Technologies, LP
View the source record on ClinicalTrials.gov ↗

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