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CompletedNCT04741698PRO-LaborUpdated Jul 28, 2022

Propranolol for Protracted Labor

A Phase 1 interventional study of Propranolol in Labour;Obstructed and Labor Dystocia, sponsored by Christiana Care Health Services. Completed at 1 site in United States. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-07-28.

Sponsored by Christiana Care Health Services · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jun 2022, 4 years 5 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

Induction of labor is one of the most common procedures performed on labor and delivery. In the United States, more than 20 percent of pregnant women undergo an induction of labor [1].

There is data from small, randomized studies that demonstrates the effectiveness of propranolol, a non-selective beta-blocker, for labor augmentation. This literature suggests a decrease in the amount of time to delivery and a possible reduction in cesarean section rates when propranolol is used in conjunction with oxytocin for induction of labor compared to oxytocin alone [2-8].

Alpha- and beta-adrenergic receptors have been identified in the human myometrium. Propranolol has been shown in studies to enhance uterine contractions and may be a useful tool in this population of women. Therefore, the purpose of this study is to assess whether the administration of propranolol at time of labor dystocia reduces time to delivery.

Read the detailed description

All cervical ripening will be performed in the labor and delivery unit; continuous fetal heart rate and uterine activity will be monitored in all patients. Cervical dilation is assigned by admitting physicians. Sonography will be performed to document fetal presentation.

At the time of prolonged labor, patients meeting inclusion criteria and no exclusion criteria will be consented. There will be no monetary incentives for participation.

Patients will be randomized to either Propranolol 2mg of IV or expectant management at the time of induction. Maternal vitals will be collected per standard labor management.

Episodes of uterine activity that are deemed excessive by the physician will be treated with a standard combination of maneuvers that included a change in maternal position, oxygen administration, and terbutaline 250 µg subcutaneously. Persistent abnormal fetal heart rate patterns resulted in intervention by removing the patient from the study. Urgent cesarean delivery is defined as a cesarean delivery performed during the ripening process for abnormal fetal heart rate that did not respond to standard maneuvers.

02

Conditions studied

  • Labour;Obstructed
  • Labor Dystocia

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03

In context

Dystocia

55 studies on the registry are indexed under Dystocia; 12 are open to participants now.

This study's enrollment of 80 is below the median of 200 across 42 interventional studies indexed under Dystocia.

Browse Dystocia studies →

Lead sponsor

Christiana Care Health Services is the lead sponsor of 94 studies on the registry; 6 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 1 (20%) have results posted.

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

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

  • ≥18 years of age
  • full term (≥37 weeks) gestations determined by routine obstetrical guidelines
  • singleton gestation in cephalic presentation
  • Intact membranes
  • Bishop score of ≤6 and cervical dilation ≤2cm

Exclusion criteria

Exclusion Criteria:

  • Preterm gestation
  • Diabetes requiring insulin in labor: given the potential risk of neonatal hypoglycemia in the neonate
  • multiparous women
  • Any cardiac condition for which β blockade is (cardiogenic shock, sinus bradycardia, and greater than first degree heart block)
  • Known to propranolol
  • Maternal bradycardia (HR \<60bpm)
  • Severe preeclampsia: as patients will be receiving magnesium and possibly labetalol for hypertension control
  • Systolic blood pressure \<90 mmHg, or diastolic blood pressure \<50 mmHg
  • Receiving other beta blocker
  • Moderate or severe asthma: as this is a contraindication to beta blocker use
  • Any contraindication to a vaginal delivery
  • fetal demise
  • Multifetal gestation
  • major fetal anomaly
  • prior uterine surgery, previous cesarean section
  • women with , , , and women with medical conditions requiring an assisted second stage
  • Additional exclusion criteria were as follows: category 3 fetal heart rate tracing, hemolysis elevated liver enzymes and low (HELLP) syndrome or eclampsia, growth restriction \<10th percentile (based on Hadlock growth curves) with reversal of flow in umbilical artery Doppler studies, and growth restriction \<5th percentile with elevated, absent, or reversal of flow in umbilical artery Doppler studies.
Terms in these criteria, in plain language(6)

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.

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
80 participants (actual)

Study arms

  • Active comparator
    Propranolol 2mg IV

    At the time of labor dystocia, patients randomized to the treatment arm of propranolol will receive a one-time administration of IV 2mg propranolol in pre-mixed syringes prepared by the pharmacy. The propranolol IV administration recommended in clinical practice guidelines is 1 mg IV over 1 minute. Therefore, total administration time will be 2 minutes.

    Drug: Propranolol

  • No intervention
    No intervention

    At the time of labor dystocia, patients randomized to the placebo arm will not receive any intervention

Interventions

  • Propranolol 2mg IV

    Also known as: Propranolol Hydrochloride, Inderal, Inderal LA, InnoPran XL, Hemangeol

06

What researchers measure

Primary outcomes

  1. time to delivery

    The primary outcome is time to delivery (hours) defined as time from initiation of induction method to delivery time, regardless of mode of delivery.

    Time frame: Number of hours from induction to delivery of neonate; up to 72 hours.

Secondary outcomes

  1. cesarean delivery rate

    rate of cesarean delivery

    Time frame: At time of delivery

  2. maternal length of stay

    from time of admission to discharge

    Time frame: From time of admission to time of hospital discharge; an average of two days

  3. Maternal Bradycardia event

    bradycardia alert during labor

    Time frame: at time of delivery

  4. Chorioamnionitis

    defined by the presence of maternal fever ≥100·4°f in the presence of maternal or fetal tachycardia or fundal tenderness

    Time frame: At time of delivery

  5. neonatal admission to ICU

    NICU admission

    Time frame: At time of delivery

  6. Severe respiratory distress syndrome

    defined as intubation and mechanical ventilation for a minimum of 12 hours

    Time frame: at time of delivery

  7. neonatal sepsis

    Culture proven-presumed neonatal sepsis

    Time frame: at time of delivery

  8. Neonatal blood transfusion

    Neonatal blood transfusion

    Time frame: From time of delivery to time of hospital discharge; up to 6 weeks

  9. Hypoxic ischemic encephalopathy

    neonatal HIE

    Time frame: through study completion, an average of 1 year

07

Study locations

1 site
  • Christiana Care
    Newark, Delaware 19718, United States
08

References and documents

Publications

  • Moghadam AD, Jaafarpour M, Khani A. Comparison effect of oral propranolol and oxytocin versus oxytocin only on induction of labour in nulliparous women (a double blind randomized trial). J Clin Diagn Res. 2013 Nov;7(11):2567-9. doi: 10.7860/JCDR/2013/5704.3613. Epub 2013 Nov 10. Erratum In: J Clin Diagn Res. 2015 Aug;9(8):ZZ01. doi: 10.7860/JCDR/2015/5704.6535. PubMed 24392402 ↗
  • Kashanian M, Fekrat M, Zarrin Z, Ansari NS. A comparison between the effect of oxytocin only and oxytocin plus propranolol on the labor (a double blind randomized trial). J Obstet Gynaecol Res. 2008 Jun;34(3):354-8. doi: 10.1111/j.1447-0756.2008.00790.x. PubMed 18588611 ↗
  • Pergialiotis V, Frountzas M, Prodromidou A, Prapa S, Perrea DN, Vlachos GD. Propranolol and oxytocin versus oxytocin alone for induction and augmentation of labor: a meta-analysis of randomized trials. Arch Gynecol Obstet. 2016 Apr;293(4):721-9. doi: 10.1007/s00404-015-3991-8. Epub 2015 Dec 22. PubMed 26695642 ↗
  • Pruyn SC, Phelan JP, Buchanan GC. Long-term propranolol therapy in pregnancy: maternal and fetal outcome. Am J Obstet Gynecol. 1979 Oct 15;135(4):485-9. doi: 10.1016/0002-9378(79)90436-8. PubMed 573555 ↗
  • Sanchez-Ramos L, Quillen MJ, Kaunitz AM. Randomized trial of oxytocin alone and with propranolol in the management of dysfunctional labor. Obstet Gynecol. 1996 Oct;88(4 Pt 1):517-20. doi: 10.1016/0029-7844(96)00223-2. PubMed 8841209 ↗
  • Meidahl Petersen K, Jimenez-Solem E, Andersen JT, Petersen M, Brodbaek K, Kober L, Torp-Pedersen C, Poulsen HE. beta-Blocker treatment during pregnancy and adverse pregnancy outcomes: a nationwide population-based cohort study. BMJ Open. 2012 Jul 19;2(4):e001185. doi: 10.1136/bmjopen-2012-001185. Print 2012. PubMed 22815467 ↗
  • Palomaki O, Uotila J, Tammela O, Kaila T, Lavapuro M, Huhtala H, Tuimala R. A double blind, randomized trial on augmentation of labour with a combination of intravenous propranolol and oxytocin versus oxytocin only. Eur J Obstet Gynecol Reprod Biol. 2006 Mar 1;125(1):44-9. doi: 10.1016/j.ejogrb.2005.06.016. Epub 2005 Jul 26. PubMed 16051416 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 28, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04741698
Lead sponsor
Christiana Care Health Services
Responsible party
Sponsor
First posted
Feb 5, 2021
Start date
Jul 27, 2021
Primary completion
Jun 11, 2022
Completion
Jul 1, 2022
Last update
Jul 28, 2022

Study contacts

Helen B Gomez, MD
principal investigator · Christiana Care Health Services

Oversight

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

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Studies of the drug tested here: Propranolol

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