Skip to content

Effect of Dexamethasone on Labor Induction

The Effect of Using Dexamethasone Tablets Vaginally On Improving Cervical Bishop Score in Nulliparous Pregnant Women. A Randomized Clinical Trial

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05070468
Enrollment
84
Registered
2021-10-07
Start date
2020-11-22
Completion date
2021-03-21
Last updated
2024-12-12

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

Conditions

Dexamethasone, Pregnancy

Brief summary

Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the a statistician did coding to identify groups of users of pill A or pill B, 14 pills are used vaginally. The patients and the researcher is blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.

Detailed description

Study design: This study was a clinical trial with the control group, blinded, randomized with a block method that was done at Kamali Hospital, Karaj, Iran. This study was carried out between October 2019 and June 2021. At first, the researchers registered this study on the RCT(randomized controlled trial) site with the following number: IR.ABZUMS.REC1399.067. A written consent form was obtained from all patients and the ethics committee of Alborz University of Medical Sciences confirmed the study protocol. Study selection: The sample size required to compare the mean of the two groups, with a 95% confidence interval and 90% test power, and considering the technical difference of 0.5 hours, was estimated to be 84 people. Then patients, randomly assigned using the block method with statistician help, were divided into two groups of 42 cases and control. The present study was performed on 82 full-term pregnant females (38 weeks or more).they had an indication for termination of pregnancy, by accident, and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally. The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher. Group A received 14 dexamethasone tablets with a dose of 0.5 mg for vaginal use and also group B received 14 placebo tablets for vaginal use. Patients who were Iranian, Prim gravid pregnancy with Normal Body Mass Index (BMI), Single Pregnancy presentation cephalic in Sonography, Aged 18 years old to 35 years old, Gestational age 38 weeks, Bishop score 2 and less, with Normal Non-Stress Test (NST), Estimate of Fetus Weight 2500-4000 gr and didn't take hormonal, herbal and chemical drugs and having a healthy water bag were enrolled to this Study. Patients who had Medicine and Midwifery Complications, Lack of Desire for Cooperation, Fetal Immobility, and Maternal Bleeding were excluded.

Interventions

Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally . The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.

DRUGPlacebo

Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally . The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.

Sponsors

Alborz Medical University
Lead SponsorOTHER_GOV

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally . The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.

Intervention model description

Subjects are assigned to two groups by randomization block balanced method allocation and using quadruple blocks. In this case, there are 6 modes And in each case, 2 people will be in the control group and 2 people will be in the intervention group. Thus, by using the table of random numbers and assigning the numbers 1 to 6 to groups of 4 people, people are finally assigned to two groups of intervention and control.

Eligibility

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

Inclusion criteria

* Iranian Women * Primigravid pregnancy * Normal of Body Mass Index * Single Pregnancy * presentation cephalic in sonography * Gestational age 38 weeks * Bishop score 2 and less * Normal Non Stress * Test Estimate of Fetus Weight 2500-4000 gr * Didn't take hormonal, herbal and chemical drugs * having a healthy water bag

Exclusion criteria

* Have Medicine And Midwifery Complication * Lack of Desire for Cooperation * Fetal Immobility * Maternal Bleeding

Design outcomes

Primary

MeasureTime frameDescription
First Bishop Scoreat the beginning of the studyThe total Bishop score is calculated by assessing the following five components of manual vaginal examination by a trained professional: Cervical dilation, Cervical effacement, Cervical consistency, Cervical position, and Fetal station. Dilation (score): closed(0), 1-2 cm (1), 3-4cm (2), 5\>= (3) Effacement (score): 0-30% (0), 40-50% (1), 60-70% (2), 80%\>= (3) Consistency (score): Firm (0), moderately firm (1), soft (2) Position (score): posterior (0), mid posterior (1), anterior(2) Station (score): -3 (0), -2 (1), -1 and 0 (2), +1 and +2 (3) The total Bishop's score which sums up all subscores can range from zero to 13, with zero meaning that the patient is not ready for induction and 13 indicating a better chance for successful induction for delivery (outcome).
Second Bishop Score6 hours after vaginally tablets installmentThe total Bishop score is calculated by assessing the following five components of manual vaginal examination by a trained professional: Cervical dilation, Cervical effacement, Cervical consistency, Cervical position, and Fetal station. Dilation (score): closed(0), 1-2 cm (1), 3-4cm (2), 5\>= (3) Effacement (score): 0-30% (0), 40-50% (1), 60-70% (2), 80%\>= (3) Consistency (score): Firm (0), moderately firm (1), soft (2) Position (score): posterior (0), mid posterior (1), anterior(2) Station (score): -3 (0), -2 (1), -1 and 0 (2), +1 and +2 (3) The total Bishop's score which sums up all subscores can range from zero to 13, with zero meaning that the patient is not ready for induction and 13 indicating a better chance for successful induction for delivery (outcome).
The Latent Phase of Laborfrom the beginning of the study to the time of 6 cm dilation of cervixmeasured by Vaginal Examination

Countries

Iran

Participant flow

Participants by arm

ArmCount
Group A
Prescribing Vaginally Dexamethasone tablets to the Group A Dexamethasone 0.5mg: Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally . The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.
42
Group B
Prescribing Vaginally placebo tablets to the Group B Placebo: Pregnant women with a gestational age of 38 weeks and older admitted to Labor Of Kamali Hospital, for termination of pregnancy, by accident and based on the coding done by a statistician to identify groups of users of pill A or pill B, 14 pills are used vaginally . The client and the researcher are blinded and the pharmacist delivers the dexamethasone and placebo tablets with codes A and B to the researcher.
42
Total84

Baseline characteristics

CharacteristicTotalGroup AGroup B
Age, Continuous24 years25 years23 years
Education
Associate's degree
4 Participants2 Participants2 Participants
Education
Bachelor's degree or higher
7 Participants4 Participants3 Participants
Education
High school
35 Participants16 Participants19 Participants
Education
Illiterate
10 Participants4 Participants6 Participants
Education
Junior school
21 Participants14 Participants7 Participants
Education
Primary school
7 Participants2 Participants5 Participants
Gravidity and parity
G1ab1
82 Participants42 Participants40 Participants
Gravidity and parity
G1ab2
1 Participants0 Participants1 Participants
Gravidity and parity
G1ab3
1 Participants0 Participants1 Participants
Job
employed
7 Participants5 Participants2 Participants
Job
Unemployed
77 Participants37 Participants40 Participants
Race and Ethnicity Not Collected0 Participants
Sex: Female, Male
Female
84 Participants42 Participants42 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 420 / 42
other
Total, other adverse events
0 / 420 / 42
serious
Total, serious adverse events
0 / 420 / 42

Outcome results

Primary

First Bishop Score

The total Bishop score is calculated by assessing the following five components of manual vaginal examination by a trained professional: Cervical dilation, Cervical effacement, Cervical consistency, Cervical position, and Fetal station. Dilation (score): closed(0), 1-2 cm (1), 3-4cm (2), 5\>= (3) Effacement (score): 0-30% (0), 40-50% (1), 60-70% (2), 80%\>= (3) Consistency (score): Firm (0), moderately firm (1), soft (2) Position (score): posterior (0), mid posterior (1), anterior(2) Station (score): -3 (0), -2 (1), -1 and 0 (2), +1 and +2 (3) The total Bishop's score which sums up all subscores can range from zero to 13, with zero meaning that the patient is not ready for induction and 13 indicating a better chance for successful induction for delivery (outcome).

Time frame: at the beginning of the study

ArmMeasureValue (MEDIAN)
DexamethasoneFirst Bishop Score1 score on a scale
PlaceboFirst Bishop Score1 score on a scale
p-value: 0.618Wilcoxon (Mann-Whitney)
Primary

Second Bishop Score

The total Bishop score is calculated by assessing the following five components of manual vaginal examination by a trained professional: Cervical dilation, Cervical effacement, Cervical consistency, Cervical position, and Fetal station. Dilation (score): closed(0), 1-2 cm (1), 3-4cm (2), 5\>= (3) Effacement (score): 0-30% (0), 40-50% (1), 60-70% (2), 80%\>= (3) Consistency (score): Firm (0), moderately firm (1), soft (2) Position (score): posterior (0), mid posterior (1), anterior(2) Station (score): -3 (0), -2 (1), -1 and 0 (2), +1 and +2 (3) The total Bishop's score which sums up all subscores can range from zero to 13, with zero meaning that the patient is not ready for induction and 13 indicating a better chance for successful induction for delivery (outcome).

Time frame: 6 hours after vaginally tablets installment

ArmMeasureValue (MEDIAN)
DexamethasoneSecond Bishop Score3.5 score on a scale
PlaceboSecond Bishop Score3 score on a scale
p-value: 0.483Wilcoxon (Mann-Whitney)
Primary

The Latent Phase of Labor

measured by Vaginal Examination

Time frame: from the beginning of the study to the time of 6 cm dilation of cervix

ArmMeasureValue (MEDIAN)
DexamethasoneThe Latent Phase of Labor4 hour
PlaceboThe Latent Phase of Labor5 hour
p-value: 0.571Wilcoxon (Mann-Whitney)

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026