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Azithromycin for Cerclage Prophylaxis

25. august 2026 oppdatert av: Wake Forest University Health Sciences

Evaluating Azithromycin Prophylaxis and Mycoplasma Prevalence in High-Risk Pregnancies Requiring Cerclage: A Prospective Cohort Study

The primary goal is to assess the effectiveness in pregnancy prolongation utilizing azithromycin at the time of transvaginal cervical cerclage placement.

Studieoversikt

Detaljert beskrivelse

The overall objective of this prospective two-arm randomized study is to (1) randomize subjects to azithromycin surgical prophylaxis versus placebo, plus the standard of care - cefazolin, at the time of cerclage placement and evaluate the impact on preterm delivery <37 weeks, <34 weeks and <28 weeks and (2) determine the prevalence of mycoplasma species in cerclage patients. Pregnant women who are candidates for cervical cerclage will be enrolled and divided into two cohorts (approximately 40 per group): (1) Cerclage + Azithromycin prophylaxis (treatment group), and (2) Cerclage without azithromycin prophylaxis (control group). Both groups will receive otherwise usual care.

Studietype

Intervensjonell

Registrering (Antatt)

80

Fase

  • Fase 4

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

    • Illinois
      • Oak Lawn, Illinois, Forente stater, 60453
        • Advocate Christ Medical Center
        • Ta kontakt med:
      • Park Ridge, Illinois, Forente stater, 60068
        • Advocate Lutheran General Hospital

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Beskrivelse

Inclusion Criteria:

  • Singleton gestation at 16+0 to 23+6 weeks of gestational age at the time of enrollment
  • Indication for transvaginal cerclage placement
  • Intact amniotic membranes

Exclusion Criteria:

  • Evidence of active infection or chorioamnionitis at presentation
  • Preterm prelabor rupture of membranes (PPROM)
  • Multiple gestation
  • HIV positive status
  • Known severe allergy or contraindication to macrolide antibiotics (azithromycin or erythromycin)
  • Use of systemic antibiotics within the past 7 days (to avoid altered baseline vaginal microbiome)
  • Major fetal anomaly or known chromosomal abnormalities that significantly affect viability
  • Any maternal condition that would ethically preclude expectant management of pregnancy irrespective of cerclage

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Cerclage and Azithromycin Prophylaxis
women at high risk for mid-trimester loss or early preterm birth who choose to undergo a cerclage as part of standard care recommendations
500 mg of IV azithromycin prior to cerclage placement in the operating room or pre-operative area.
All participants will receive standard of care cefazolin. First dose is to be given preoperatively, and the next two doses to be given 8 and 16 hours postoperatively. Participants weighing less than 100 kg will receive 2 g cefazolin, and those weighing 100 kg or more will receive 3 g cefazolin.
progesterone 200 mg nightly after cerclage placement until 36 weeks gestation
Aktiv komparator: Cerclage Without Azithromycin Prophylaxis
women at high risk for mid-trimester loss or early preterm birth who choose to undergo a cerclage as part of standard care recommendations
All participants will receive standard of care cefazolin. First dose is to be given preoperatively, and the next two doses to be given 8 and 16 hours postoperatively. Participants weighing less than 100 kg will receive 2 g cefazolin, and those weighing 100 kg or more will receive 3 g cefazolin.
normal saline placebo IV infusion prior to cerclage placement in the operating room or pre-operative area
progesterone 200 mg nightly after cerclage placement until 36 weeks gestation

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Latency from Cerclage to Delivery
Tidsramme: Up to Week 42
Number of days from cerclage to delivery
Up to Week 42
Gestational Age at Delivery
Tidsramme: Up to Week 42
Gestational age at delivery measured in weeks and days
Up to Week 42

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Incidence of Chorioamnionitis
Tidsramme: Up to Week 42
number of participants with chorioamnionitis
Up to Week 42
Incidence of Preterm Premature Birth
Tidsramme: 28 weeks gestation, 34 weeks gestation, 37 weeks gestation
Number of participants that experienced preterm premature birth
28 weeks gestation, 34 weeks gestation, 37 weeks gestation
Incidence of Preterm Premature Rupture of Membranes
Tidsramme: up to 37 weeks gestation
Number of participants that experienced preterm premature rupture of membranes
up to 37 weeks gestation
Complications from Cerclage
Tidsramme: Up to Week 42
Number participants that experienced complications from cerclage
Up to Week 42
Prevalence of Mycoplasma Infection or Colonization
Tidsramme: Up to Week 42
Number of participants with prevalence of mycoplasma infection or colonization
Up to Week 42

Andre resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Neonate Birth Weight
Tidsramme: day of delivery
weight of neonate at birth
day of delivery
Apgar Scores
Tidsramme: 1 minute post delivery, 5 minutes post delivery
The Apgar score is a standardized test used to rapidly assess a newborn's health immediately after birth. It is evaluated at 1 minute (to see how the baby handled delivery) and 5 minutes (to check how the baby is adapting to life outside the womb). Total score range is 0-10 with a higher score indicating newborn is adapting well to life outside the womb.
1 minute post delivery, 5 minutes post delivery
Number of NICU Admissions
Tidsramme: day of delivery
number of neonates admitted to NICU after delivery
day of delivery
Length of NICU Admission
Tidsramme: up to month 12
number of days neonates spent in NICU
up to month 12
Neonate Survival Rate
Tidsramme: up to month 12
percent of neonate survival
up to month 12
Composite Neonate Morbidity
Tidsramme: up to month 12
composite neonatal morbidity is a yes/no outcome that is considered yes if any of the adverse outcomes are positive
up to month 12

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Hovedetterforsker: Rachel Harrison, MD, Advocate Christ Medical Center

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. september 2026

Primær fullføring (Antatt)

1. juni 2028

Studiet fullført (Antatt)

1. desember 2028

Datoer for studieregistrering

Først innsendt

20. mai 2026

Først innsendt som oppfylte QC-kriteriene

20. mai 2026

Først lagt ut (Faktiske)

27. mai 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

27. august 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

25. august 2026

Sist bekreftet

1. august 2026

Mer informasjon

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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