Evidence map›Paper›PMID 34187394›Full record

ArticleBMC pregnancy and childbirth2021

The effectiveness of nifedipine/indomethacin combination therapy and nifedipine monotherapy for postponing preterm birth (25-34 weeks of gestation) in Sudanese women: a randomized clinical trial study protocol.

Mohammed H Ibrahim, Tahani Elfaki, Elhassan M Elhassan, Somia K Abdelrahiem, Ishag Adam

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in BMC pregnancy and childbirth, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.5field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 6 citations in OpenAlex.

  1. Synergistic effects of nifedipine and indomethacin in tocolysis: A translational study.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025
    Article
  2. Therapeutic potential of extracellular vesicles for treating human pregnancy disorders.Extracellular vesicles and circulating nucleic acids · 2025
    Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Mohammed H IbrahimDepartment of Pharmacology and Toxicology, Unaizah College of Pharmacy, Qassim University, Unaizah City, Qassim Region, 51911, Saudi Arabia.
Tahani ElfakiDepartment of Obstetrics and Gynecology, University of Gezira, Medani, Sudan. gasimgsm1974@gmail.com.
Elhassan M ElhassanDepartment of Obstetrics and Gynecology, University of Gezira, Medani, Sudan.
Somia K AbdelrahiemDepartment of Obstetrics and Gynecology, University of Gezira, Medani, Sudan.
Ishag AdamDepartment of Obstetrics and Gynecology, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, Kingdom of Saudi Arabia.
University of Gezira · SDQassim University · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPreterm birth is the most common cause of neonatal morbidity and mortality. Tocolytics are considered a standard treatment for women with threatened preterm delivery to allow time for maternal steroid administration and transfer to referral centers with neonatal intensive care units. However, there is controversy about the best tocolytic therapy to be considered as the first choice. The aim of this study is to compare the tocolytic effectiveness and tolerability of combination therapy with nifedipine and indomethacin versus nifedipine monotherapy among Sudanese women with preterm labor (PTL) as well as to compare the possible neonatal outcomes associated with each drug. METHODS/

designThis is a randomized controlled clinical trial to be conducted in the Medani Maternity Hospital, Sudan. Women aged 18-40 years that are diagnosed with preterm labor and have a gestational age between 25 and 34 weeks will be eligible to participate in this trial. The diagnosis of threatened PTL is defined as persistent uterine contractions "(four contractions every 20 min or eight contractions every 60 min)" with cervical changes "(cervical effacement ≤80% or cervical dilatation >two cm)". Patients will be eligible regardless of the presentation of the fetus. It will be randomly decided whether participants receive nifedipine/indomethacin combination therapy or nifedipine monotherapy. The primary outcome is the number of women who do not deliver and do not need alternative tocolytic drug (terbutaline). The secondary outcome is an estimated association with neonatal morbidity and mortality. The sample size will be 117 subjects in each arm of the study, according to a type I error of 0.05 and a study power of 80%. DISCUSSION: We expect higher effectiveness of the combination indomethacin/nifedipine tocolytic therapy compared with nifedipine monotherapy. We plan to suggest this combination therapy as the best option for postponing PTL.

trial registrationClinical trial registration: PACTR202004681537890 , date of registration: March 8, 2020.

Indexed as

AdolescentAdultCombined Modality TherapyFemaleGestational AgeHumansIndomethacinInfant, NewbornLabor Stage, FirstNifedipinePregnancyPremature BirthRandomized Controlled Trials as TopicSudanTocolysisTocolytic AgentsIndomethacinNifedipineTocolytic AgentsControl trialIndomethacinNifedipinePreterm laborTocolytics

Identifiers

PMID34187394
PMCPMC8244195
OpenAlexW3173723377

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.