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The Effect of Oral Isosorbide Mononitrate Therapy on Umbilical Artery Doppler Resistance Index in Pregnancies With Intrauterine Growth Restriction: Prospective Randomized Control Trial

The Effect of Oral Isosorbide Mononitrate Therapy on Umbilical Artery Doppler Resistance Index in Pregnancies With Intrauterine Growth Restriction: Prospective Randomized Control Trial

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05800938
Enrollment
46
Registered
2023-04-06
Start date
2022-06-08
Completion date
2022-12-06
Last updated
2023-04-10

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

Conditions

Intrauterine Growth Restriction

Brief summary

Will follow up umblical artery Doppler indices for pregnancies with iugr taking placebo and oral isosorbide mononitrate to study its efficacy on the intrauterine growth restricted fetuses

Detailed description

Patients meeting these criteria are to be randomized into one of the following two groups: * Group A (n=23): The Isosorbide Mononitrate group: will receive (IMDUR®, 30 mg, tablet, AstraZeneca, Egypt) (Isosorbide-5-mononitrate Biphasic) twice daily for 4-6 weeks (according to xPharm: The Comprehensive Pharmacology Reference, 2007, Pages 1-4). * Group B (n=23): The placebo group will receive (Osteocare®, tab, VITABIOTICS, Egypt) twice daily for 4-6 weeks Justification: Using PASS 11 program for sample size calculation, setting power at 80% and alpha error at 0.05 and according to Trapani et al., 2015, the expected change in UTA-PI in isosorbide mononitrate group=21% compared to no change in placebo group. Sample size of 23 women per group will be needed to detect difference between two groups. The study is to be double-blinded, where neither the researcher, nor the participants will know what type of medication each participant will receive, as a nurse will give each patient a closed envelope containing 21 tablets of one of the above two medications in a randomized fashion.

Interventions

DRUGIsosorbid mononitrate

Imdur tablets were given twice daily for 4 weeks

DRUGPlacebo

Placebo tablets were given twice daily for 4 weeks

Sponsors

Ain Shams University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 35 Years
Healthy volunteers
Yes

Inclusion criteria

* age : 18-34 BMI: 18-30 Singleton pregnancy Gestational age between 28-30 Criteria of IUGR

Exclusion criteria

Had known or suspected chromosomal or structural anomaly Had a condition which will require delivery Multiple pregnancy \-

Design outcomes

Primary

MeasureTime frameDescription
Reduction in umbilical artery Doppler indices4 weeks after initiation of treatmentMeasuring of the umbilical artery Doppler resistant index (RI) with the patient in semi recombinant position, during a period of absent fetal movement and breathing. a minimum of three uniform Doppler waveforms will be measured

Secondary

MeasureTime frameDescription
Enhancement of fetal growth as measured by the increase in estimated fetal weight and abdominal circumference4 weeks after initiation of treatmentEstimation of fetal weight calculated automatic in the software of the ultrasound scanner utilizing Hadlock's formula (Biparital diameter BPD, Femur length FL, Abdominal circumference AC).
Development of fetal complications4 weeks after initiation of treatmentIUFD, Fetal distress or deterioration of Doppler indices requiring delivery
Interval to delivery37 weeksgestational age at delivery in weeks
Maternal side effects4 weeks after initiation of treatmentHeadache, palpitation, postural hypotension

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026