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CompletedNCT05946681PRISMUpdated May 7, 2024

Sildenafil Citrate to Improve Maternal and Neonatal Outcomes in Low-resource Settings

An observational study in Fetal Distress, Perinatal Asphyxia and Birth Asphyxia, sponsored by NICHD Global Network for Women's and Children's Health. Completed at 1 site in Zambia. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-05-07.

Sponsored by NICHD Global Network for Women's and Children's Health · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
1,017
Ages
18 Years and older
Sex
Female
01

Study summary

The PRISM pilot feasibility study consists of two phases to determine: 1) to delivery practices, rates of primary and secondary outcomes, and feasibility of enrollment rates, and 2) to assess the feasibility and acceptability of the intervention and expected enrollment rates, and estimate the effect size of sildenafil citrate on maternal and neonatal outcomes in a low resource settings in preparation for the main RCT.

Read the detailed description

The primary objectives of the PRISM pilot study relate to feasibility of a large randomized controlled trial of intrapartum sildenafil citrate and will aid in design of a definitive trial among pregnant women to day 42 postpartum (pp) and their newborns to day 28 pp. The pilot will help prepare for the main trial by allowing the investigators to:

  • Determine the rate and indication for fetal heart rate monitoring practices;
  • Determine the rate and indications for operative delivery;
  • Inform the rates of relevant primary and secondary outcomes to possibly target in a large randomized controlled trial of intrapartum sildenafil citrate;
  • Assess the feasibility and acceptability of the intervention and expected enrollment rates;
  • Estimate the effect size of sildenafil citrate on maternal and neonatal outcomes in a low resource setting.
02

Conditions studied

  • Fetal Distress
  • Perinatal Asphyxia
  • Birth Asphyxia
  • Stillbirth

Keywords

  • Fetal Distress
  • Perinatal Asphyxia
  • Sildenafil Citrate
  • Fetal Heart Rate Monitoring
  • Zambia
03

In context

Fetal Distress

37 studies on the registry are indexed under Fetal Distress; 7 are open to participants now.

This study's enrollment of 1,017 is above the median of 121 across 12 observational studies indexed under Fetal Distress.

Browse Fetal Distress studies →

Lead sponsor

NICHD Global Network for Women's and Children's Health is the lead sponsor of 33 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

The pilot observational study will be undertaken in two sites in Zambia; one in a Level 3 delivery facility and a Level 2 delivery facility in Lusaka. A maximum of 1000 women per site will be enrolled in the pilot study. Each site will prospectively collect up to six months of data, three months of piloting forms and non-drug interventions. A subsequent small RCT with study medication will enroll 500 participants over a period of up to three months per site. Enrollment will take place in pre-identified health facilities where women present for labor and delivery.

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

  • Admission to facility with plan for spontaneous or induced vaginal delivery
  • Early stage of labor (≤ 6 cm cervical dilation per local standard) at ≥ 37 weeks gestation
  • Age ≥ 18 years of age
  • Presence of single live fetus confirmed via a fetal heart rate by Doptone in cephalic position
  • Provision of written [Note: if written consent is obtained at an early time, verbal re-confirmation is required at time of enrollment]

Exclusion criteria

Exclusion Criteria:

  • Non-emancipated minors (as per local regulations)
  • Plan for Cesarean delivery or history of cesarean section prior to enrollment*
  • Unknown gestational age
  • Advanced stage of labor (>6 cm or 10 cm cervical dilation per local standards) and pushing or too distressed to understand, confirm, or give regardless of cervical dilation
  • Not capable of giving consent due to other health problems such as obstetric emergencies (for example, antepartum hemorrhage) or mental disorder;
  • Any medical condition considered a , including contraindication to sildenafil therapy, per the judgement of site investigators
  • Any maternal medical condition or status that precludes informed consent
  • Recognized fetal anomaly
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
1,017 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Effect size estimate of the intervention on the incidence of the composite neonatal outcome.

    The outcome will be measured by overall number of eligible consented participants and incidence of the composite neonatal outcome.

    Time frame: From delivery to 7 days post delivery

07

Study locations

1 site
  • University Teaching Hospital
    Lusaka, Zambia
08

References and documents

Individual participant data

Plan to share: Yes

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 7, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05946681
Lead sponsor
NICHD Global Network for Women's and Children's Health
Collaborators
Global Network for Women's and Children's Health Research, University of Alabama at Birmingham, University Teaching Hospital, Lusaka, Zambia, RTI International
Responsible party
Sponsor
First posted
Jul 14, 2023
Start date
May 16, 2023
Primary completion
Oct 30, 2023
Completion
Dec 31, 2023
Last update
May 7, 2024

Study contacts

Elwyn Chomba, MD
principal investigator · Levy Mwanawasa Medical University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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