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CompletedNCT00186069Updated Jan 2, 2018Results posted

Magnesium Sulfate vs Placebo for Placental Abruption

An interventional study of Magnesium Sulfate and Normal Saline in Abruptio Placentae, sponsored by Stanford University. Completed at 2 sites in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-01-02.

Sponsored by Stanford University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

To evaluate the safety and efficacy of magnesium sulfate for preterm suspected abruption.

Read the detailed description

We hope to learn if there is a difference in the efficacy of intravenous magnesium sulfate versus intravenous saline infusion in the resolution of vaginal bleeding and contractions in patients with a suspected placental abruption.

02

Conditions studied

  • Abruptio Placentae

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03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • vaginal bleeding and contractions consistent with suspected placental abruption between 24 and 34 weeks gestation.

Exclusion criteria

Exclusion Criteria:

  • preterm labor, severe bleeding necessitating immediate delivery, maternal coagulopathy, fetal distress
04

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
Double (Participant, Outcomes assessor)
Enrollment
30 participants (actual)

Study arms

  • Active comparator
    Magnesium Sulfate

    Magnesium Sulfate 4 gram bolus, followed by 2 grams per hour

    Drug: Magnesium Sulfate

  • Placebo comparator
    Normal Saline

    Normal Saline 4 gram bolus, followed by 2 grams per hour

    Other: Normal Saline

Interventions

  • DrugMagnesium Sulfate

    Magnesium Sulfate 4 gram bolus, followed by a maintenance dose at 2 grams per hour. Rate increases up to 4 grams per hour may be administered per physician discretion.

    Also known as: Active study drug

  • OtherNormal Saline

    Normal Saline infusion of 4 gram bolus, followed by 2 grams per hour with rate increases up to 4 grams per hour per physician discretion.

    Also known as: Normal Saline infusion as placebo

05

What researchers measure

Primary outcomes

  1. Undelivered With Resolution of Vaginal Bleeding and Contractions in First 48 Hours

    The primary outcome was the proportion of women undelivered at 48 hours with resolution of vaginal bleeding and uterine contractions.

    Time frame: 48 hours after the randomization

Secondary outcomes

  1. Gestational Age at Delivery (Weeks)

    Median gestational age at delivery (in full weeks)

    Time frame: Time of delivery

  2. Neonatal Apgar Score at 5 Minutes

    The median Apgar score at 5 minutes. Apgar score scale is from 0 to 10 with score 0 expressing the worst neonatal status and score 10 the best status.

    Time frame: At 5 minutes after birth

06

Results

Posted Apr 20, 2017

Participant flow

Participant flow — Overall Study
MilestoneMagnesium SulfateNormal Saline
Started1515
Completed1515
Not completed00

Outcome measures

PrimaryUndelivered With Resolution of Vaginal Bleeding and Contractions in First 48 Hours

The primary outcome was the proportion of women undelivered at 48 hours with resolution of vaginal bleeding and uterine contractions.

Time frame:
48 hours after the randomization
Reported as:
Number · participants
Undelivered With Resolution of Vaginal Bleeding and Contractions in First 48 Hours
participantsMagnesium SulfateNormal Saline
Undelivered With Resolution of Vaginal Bleeding and Contractions in First 48 Hours1210
Statistical analysis
  • Magnesium Sulfate vs Normal Saline · Fisher Exact · p = 0.68 · Risk ratio (rr): 1.20 · 95% CI 0.77 to 1.86
SecondaryGestational Age at Delivery (Weeks)

Median gestational age at delivery (in full weeks)

Time frame:
Time of delivery
Reported as:
Median · weeks of gestation
Gestational Age at Delivery (Weeks)
weeks of gestationMagnesium SulfateNormal Saline
Gestational Age at Delivery (Weeks)36 (32 to 38)38 (33 to 39)
Statistical analysis
  • Magnesium Sulfate vs Normal Saline · Wilcoxon (Mann-Whitney) · p = 0.52
SecondaryNeonatal Apgar Score at 5 Minutes

The median Apgar score at 5 minutes. Apgar score scale is from 0 to 10 with score 0 expressing the worst neonatal status and score 10 the best status.

Time frame:
At 5 minutes after birth
Reported as:
Median · Apgar score
Neonatal Apgar Score at 5 Minutes
Apgar scoreMagnesium SulfateNormal Saline
Neonatal Apgar Score at 5 Minutes9 (9 to 9)9 (9 to 9)
Statistical analysis
  • Magnesium Sulfate vs Normal Saline · Fisher Exact · p = 0.95

Adverse events

Collected over The adverse events were collected while participants were admitted in labor&delivery and in postpartum units.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Magnesium Sulfate—0/15 (0%)2/15 (13.3%)
Normal Saline—0/15 (0%)3/15 (20%)
Most frequent other events
Most frequent other events
EventMagnesium SulfateNormal Saline
FlushingSkin and subcutaneous tissue disorders0/152/15
LethargyNervous system disorders0/151/15
HeadacheNervous system disorders1/150/15
DizzinessNervous system disorders1/150/15

Baseline characteristics

Age, Continuous
Age, Continuous(years)Magnesium SulfateNormal SalineTotal
Mean29.2 ± 7.226.4 ± 6.327.8 ± 6.8
Sex: Female, Male
Sex: Female, Male(Participants)Magnesium SulfateNormal SalineTotal
Female151530
Male000
Parity
Parity(participants)Magnesium SulfateNormal SalineTotal
Nulliparous257
Multiparous131023
Gestational age at randomization (weeks)
Gestational age at randomization (weeks)(weeks of gestation)Magnesium SulfateNormal SalineTotal
Median30 (28 to 32)30 (25 to 31)30 (25 to 32)
Placental location
Placental location(participants)Magnesium SulfateNormal SalineTotal
Anterior4711
Posterior9615
Fundal123
Lateral101
Vaginal bleeding before study drug administered
Vaginal bleeding before study drug administered(participants)Magnesium SulfateNormal SalineTotal
Mild111122
Moderate448
Heavy000
07

Study locations

2 sites
  • Santa Clara Valley Medical Center
    San Jose, California 95128, United States
  • Stanford University School of Medicine
    Stanford, California 94305, United States
08

References and documents

Publications

  • Colon I, Berletti M, Garabedian MJ, Wilcox N, Williams K, El-Sayed YY, Chueh J. Randomized, Double-Blinded Trial of Magnesium Sulfate Tocolysis versus Intravenous Normal Saline for Preterm Nonsevere Placental Abruption. Am J Perinatol. 2016 Jun;33(7):696-702. doi: 10.1055/s-0036-1571324. Epub 2016 Feb 12. PubMed 26871905 ↗

Individual participant data

Plan to share: Undecided

09

Registry details

Key details

Study ID
NCT00186069
Lead sponsor
Stanford University
Collaborators
Santa Clara Valley Medical Center
Responsible party
Yasser Yehia El-Sayed (Professor of Obstetrics and Gynecology, Stanford University) — Principal investigator
First posted
Sep 16, 2005
Start date
Mar 2004
Primary completion
Jun 2014
Completion
Nov 2017
Results posted
Apr 20, 2017
Last update
Jan 2, 2018

Study contacts

Yasser Y El-Sayed, MD
principal investigator · Stanford University

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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