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CompletedNCT02712125Updated Mar 18, 2016

Nitric Oxide Donors for Treatment of Isolated Oligohydramnios

A Phase 2/3 interventional study of isosorbide mononitrate and Placebo in Isolated (Idiopathic) Oligohydramnios, sponsored by Benha University. Completed. Open to female participants aged 18 Years to 35 Years. Per ClinicalTrials.gov, last updated 2016-03-18.

Sponsored by Benha University · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Female
01

Study summary

Objective: To assess the influence of maternal isosorbide mononitrate (IMN) vaginal supplementation in improving liquor volume in women with isolated oligohydramnios.

Study Design: Prospective randomized interventional study. Materials and Methods: 100 women with singleton pregnancy about 28-36 weeks, with isolated oligohydramnios [amniotic fluid index (AFI) \< 5] were enrolled in the study. Before the proposed intervention, the antenatal risk factors were studied. Patients received 20 mg isosorbide mononitrate (IMN) vaginally. Patient were followed after 24 hours then weekly. The treatment was continued till the liquor improved significantly or until delivery. Outcome measures; mean increase in liquor, intervention delivery interval, and neonatal outcome were studied.

Read the detailed description

This prospective randomized interventional study was done in Obstetrics and Gynecology Department , Benha University Hospital, Alkalubia, Egypt from August 2013 to August 2015.

The study protocol was approved by the Local Ethics Committee and written informed consents were taken from patients entering the study. The study included 100 women aged 18-35 years with singleton pregnancy about 28-36 weeks gestation, with diagnosed isolated oligohydramnios (AFI less than 5 cm).

Initially, all the participants were subjected to through routine antenatal history taking and examination and by routine ultrasound scan using (Voluson, 730 Pro V, GE Medical System), AFI was assessed. All participants were instructed to take regularly the daily water requirement, especially in the two days before starting the study and throughout the study. Participants were randomly scheduled into two equal groups by computer-generated blocks into a control group received placebo vaginal tablets and a study group received 20 mg isosorbide mononitrate (IMN) vaginally once daily until delivery (Effox, Mina Pharma Co, Egypt; under license of Schwartz Pharma, Germany). Treatment allocation was concealed by using sequentially numbered opaque sealed envelopes, opened sequentially by a third person (study nurse). Amniotic fluid index was rechecked after two days and followed up weekly till delivery by one person to avoid interobserver variability. Drug treatment continues until the volume of the fluid reach the normal value or until delivery. Antenatal vitamins were continued.

Primary outcome measure was the change in AFI.

Secondary outcome measures were the side effect of isosorbide mononitrate if any, indications and mode of delivery, and neonatal outcomes as regard birth weight, still birth or neonatal death, Apgar score and the need for neonatal admission.

02

Conditions studied

  • Isolated (Idiopathic) Oligohydramnios

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03

In context

Oligohydramnios

25 studies on the registry are indexed under Oligohydramnios; 5 are open to participants now.

This study's enrollment of 100 is close to the median of 91 across 16 interventional studies indexed under Oligohydramnios.

Browse Oligohydramnios studies →

Lead sponsor

Benha University is the lead sponsor of 362 studies on the registry; 66 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
No

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

  • Singleton pregnancy
  • 28-36 weeks gestation,
  • Diagnosed isolated oligohydramnios (AFI less than 5 cm).

Exclusion criteria

Exclusion Criteria:

  • Multiple pregnancy;
  • Fetal chromosomal or congenital abnormalities;
  • Signs of fetal distress;
  • Preterm rupture of membranes;
  • Intrauterine infection;
  • Receiving treatment for oligohydramnios ;
  • History of maternal heart disease;
  • Vasodilator use; sensitivity to NO donors ;
  • Pre-existing chronic medical problems.
05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
100 participants (actual)

Study arms

  • Active comparator
    isosorbide mononitrate

    Received 20 mg isosorbid mononitrate (IMN) (Effox, Mina Pharma Co, Egypt; under license of Schwartz Pharma, Germany) vaginally once daily until delivery

    Drug: isosorbide mononitrate

  • Placebo comparator
    Control

    Received placebo vaginal tablets once daily until delivery

    Drug: Placebo

Interventions

  • 20 mg isosorbide mononitrate (IMN) tablet applied vaginally once daily until delivery .

    Also known as: Effox 20 mg tablet

  • DrugPlacebo

    placebo vaginal tablets once daily until delivery

06

What researchers measure

Primary outcomes

  1. The change in amniotic fluid index (AFI)in centimeters.

    Technique of AFI measurement * Uterus is divided into four imaginary quadrants with linea nigra and umbilicus acting as the vertical and the horizontal axis respectively * The deepest pocket devoid of umbilical cord and fetal parts is measured in the vertical dimension * Measurement of the four pockets is in centimeters * Sum of all the four quadrant measurements is AFI * Normal AFI values range from 5 to 25 cm

    Time frame: Through study completion, up to 40 weeks of gestations

Secondary outcomes

  1. Number of participants with isosorbide mononitrate -related adverse events as assessed by CTCAE v4.0.

    Time frame: Through study completion, up to 40 weeks of gestations

  2. Number of participants with each indication of delivery

    Time frame: Through study completion, up to 40 weeks of gestations

  3. Number of participants with adverse neonatal outcomes

    Time frame: At time of delivery.

  4. Number of participants delivered by Cesarean sections or vaginally

    Time frame: Through study completion, up to 40 weeks of gestations

07

Study locations

No study locations are listed for this record.

08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2013, a primary completion of Jun 2015 and a completion of Aug 2015. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 2, 2016
First posted
Mar 18, 2016
Start
Aug 2013
Primary completionActual
Jun 2015
CompletionActual
Aug 2015
Last update
Mar 18, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 18, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02712125
Lead sponsor
Benha University
Responsible party
Ahmed Walid Anwar Murad (Assistant Professor, Department of Obstetrics and Gynecology, Faculty of Medicine, Benha University) — Principal investigator
First posted
Mar 18, 2016
Start date
Aug 2013
Primary completion
Jun 2015
Completion
Aug 2015
Last update
Mar 18, 2016

Study contacts

Ahmed Walid Anwar Murad
principal investigator · Department of Obstetrics and Gynecology, Faculty of Medicine, Banha University,

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2016. You cannot join it, but the record below documents what was studied.

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