Non-invasive Test to Detect Intra-amniotic Infection in Women With Preterm Labor and Intact Amniotic Membranes

Study Overview
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Brief Summary
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The purpose of this study is to collect clinical specimens and corresponding clinical data to develop a non-invasive test for detection of intra-amniotic infection and prediction of preterm birth in women and intact amniotic membranes. The specimens collected will be used to develop a specific biomarker panel and algorithm using immunoassays for optimal detection of intra-amniotic infection in women with preterm labor and intact amniotic membranes.

Detailed Description
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Intra-amniotic infection (IAI) is an acute bacterial infection of the amniotic fluid and intrauterine contents during pregnancy and occurs in 4% to 10% of all deliveries (Newton, ER., 1993. Newton, ER, et al., 1989. Soper, DE, et al., 1989). IAI is an important cause of maternal and neonatal morbidity. Identifying and appropriately treating women with IAI is, therefore, a major obstetrical challenge. Intrauterine infection may occur early in pregnancy and remain undetected for a prolonged period, thus exposing the fetus to the effects of infection/inflammation for a considerable period. Ideally, an early diagnosis of IAI is important to allow timely treatment and intervention. Unfortunately, the early diagnosis is difficult because the clinical signs and symptoms of IAI may occur late in the course of the infection and are neither sensitive nor specific. Therefore, to avoid a delay in diagnosis a high degree of suspicion and the appropriate use of adjunctive laboratory tests are warranted.

Official Title
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Development of a Non-invasive Test to Detect Intra-amniotic Infection and Predict Preterm Birth in Women Presenting With Preterm Labor and and Intact Amniotic Membranes

Conditions
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Intra-amniotic Infection

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subject is greater than or equal to 18 years of age Subject has singleton gestation Subject has fetus with gestational age greater than or equal to 22 0/7 weeks and less than or equal to 36 6/7 weeks Subject has documented intact amniotic membranes Subject's care provider plans to or has performed an amniocentesis procedure Subject has had evidence of spontaneous preterm labor as evidenced by documented regular uterine contractions (greater than or equal to four per hour, or if less than 26 weeks gestation, cramping or backache) and one or more of the following: Progressive cervical change with cervical dilation of greater than or equal to 2 cm Effacement of greater than or equal to 50% Cervical length of less than or equal to 30 mm via transvaginal ultrasound Positive fetal fibronectin test Exclusion Criteria: Subject has documented ruptured amniotic membranes Subject has fetus with major fetal anomaly or chromosomal aneuploidy Subject has medical indication for preterm birth (e.g. pre-eclampsia) Subject is unable to provide written informed consent

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| 1<br>Women presenting in preterm labor with intact amniotic membranes | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Performance of immunoassay panel to detect intra-amniotic infection in target population. |  | Presentation to delivery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Preterm Labor, Preterm Birth, Intra-amniotic Infection, Pregnancy, Women