Dynamic Cervical Change: Prediction of Preterm Labor in Symptomatic Patients

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT00298480

Enrollment

220

Registered

2006-03-02

Start date

2005-02-28

Completion date

2007-07-31

Last updated

2007-04-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dynamic Cervical Change in Preterm Labor Patients

Keywords

preterm labor, transvaginal ultrasound, dynamic cervical change

Brief summary

Transvaginal ultrasound of the cervix has become a common tool to evaluate patients who are at risk for preterm delivery. A shortened cervical length has been associated with an increased risk of preterm delivery. Dynamic cervical change is visible shortening(\>6mm) of the cervix seen during the ultrasound examination. Prior studies have shown that the presence of dynamic change in patients with a shortened cervical length(\<3cm) is not independently predictive of preterm delivery. However, a subset of patients with normal initial cervical length(\>3cm) and dynamic change did demonstrate an increased rate of preterm delivery. Because this was a small sub-group, the present study was designed to obtain a larger sample size for further evaluation. The second focus of this study involves patients with a dilated cervix and whether cervical length adds predictive value to gestational age at delivery. Patients presenting to with symptomatic preterm labor(vaginal pressure or uterine contractions), who consent to the study, will undergo the standard evaluation for preterm labor(described in detail below.) The only additional evaluation is a prolonged transvaginal ultrasound of approximately 10 minutes to evaluate for the presence of dynamic change during a contraction. Null hypothesis: Symptomatic preterm labor patients, with normal initial cervical length(\>3cm), who exhibit dynamic cervical change deliver at a gestational age equal to those without dynamic change. Alternative hypothesis: Symptomatic preterm labor patients, with normal initial cervical length(\>3cm), who exhibit dynamic cervical change deliver at an earlier gestational age than those without dynamic change.

Interventions

None listed

Study design

Observational model

CASE_CONTROL

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

FEMALE

Age

18 Years to 45 Years

Inclusion criteria

* Pregnant women between the ages of 18 and 45 years. * Intrauterine pregnancy with gestational age between 22 0/7 and 34 6/7 weeks gestation. * Presenting with symptomatic preterm labor (e.g. Regular uterine contractions, uterine cramping, or pelvic pressure).

Exclusion criteria

* Cervical cerclage * Ruptured membranes noted on initial speculum examination * Cervical os dilation \>4 cm noted on initial digital examination * Known HIV-positive or active HSV(to minimize the risk of perinatal exposure) * Presence of multiple genital warts * Patients under extreme duress from their uterine contractions

Countries

United States

Contacts

Primary ContactCharlotte A Clock, M.D.

cclock@uci.edu714-456-5967

Outcome results