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A Study to Evaluate the Efficacy of Intravenous Magnesium in the Management of Atrial Fibrillation with a Rapid Ventricular Rate in the Emergency Department

The Utility of Magnesium in the Management of Atrial fibrillation with Rapid ventricular Response: A Randomised Controlled Trial (MagMAR study)

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12619000532101
Acronym
MagMAR
Enrollment
104
Registered
2019-04-03
Start date
2019-04-03
Completion date
2020-12-01
Last updated
2020-03-23

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

Conditions

None listed

Brief summary

High dose magnesium administered intravenously is often utilized in the management of atrial fibrillation with a fast heart rate. Randomised controlled trials have shown conflicting results in regards to its efficacy. We aim to further examine the relationship between the heart rate and magnesium therapy in patients presenting to a Melbourne based Emergency Department with 'fast' atrial fibrillation. We are primarily interested in finding out whether Magnesium therapy aids the reduction of heart rate and our secondary endpoints include; reversion to sinus (normal) rhythm, time to achieve target heart rate, number of additional treatments required to achieve heart rate target, length of stay in emergency department, rate of inpatient hospital admission and 30 day mortality and readmission rates.

Interventions

Following randomisation, there shall be two groups as detailed below. 1. Intervention Arm – Shall receive a single intravenous administration of 20mmol of Magnesium Sulfate in 100mls of normal 0.9% saline over 30 minutes. 2. Placebo Arm – Shall receive a single intravenous administration of 100mls of 0.9% normal saline over 30 minutes. The above interventions shall not be personalised, this is a randomised controlled study design trial and patients will all be required to sign a patient inf

Following randomisation, there shall be two groups as detailed below. 1. Intervention Arm – Shall receive a single intravenous administration of 20mmol of Magnesium Sulfate in 100mls of normal 0.9% saline over 30 minutes. 2. Placebo Arm – Shall receive a single intravenous administration of 100mls of 0.9% normal saline over 30 minutes. The above interventions shall not be personalised, this is a randomised controlled study design trial and patients will all be required to sign a patient information and consent form detailing participant involvement, risks and study objectives.

Sponsors

Eastern Health Foundation
Lead SponsorCharities/Societies/Foundations

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Greater than or equal to 18 years of age 2. ECG at presentation to Emergency Department greater than or equal to a ventricular rate of 120 3. Presenting complaint attributable to atrial fibrillation 4. Able to give informed consent

Exclusion criteria

1. Haemodynamically instability, in this study, defined as Systolic Blood Pressure less than 90mmHg 2. Suspected acute myocardial infarction 3. Overt sepsis suspected by treating clinician 4. Known renal impairment (egfr <30)

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026