Prospective Randomized Clinical Trial of Fetal Atrial Flutter & Supraventricular Tachycardia Therapy (FAST RCT)
FAST RCT: Prospective Randomized Clinical Trial of Fetal Atrial Flutter & Supraventricular Tachycardia Therapy
Sponsor study identifier
interventional
105
6 countries
22
Study Start
February 2016
Actual (reported)Primary Completion
March 31, 2024
Actual (reported)Study Completion
March 31, 2024
Actual (reported)The Fetal Atrial Flutter and Supraventricular Tachycardia (FAST) Therapy Trial is a prospective multi-center trial that examines the efficacy and safety of standard prenatal antiarrhythmic treatment. Study components of FAST include three prospective sub-studies to determine the efficacy and safety of commonly used transplacental drug regimens in suppressing fetal AF without hydrops (Randomized Clinical Trial (RCT) A), SVT without hydrops (RCT B), and SVT with hydrops (RCT C). All RCTs are open label phase III trials of standard 1st line therapy, which either is started as monotherapy (no hydrops) or as dual therapy (hydrops).
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
March 31, 2024
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
November 30, 2015
Actual (reported)December 8, 2015
Actual (reported)February 2016
Actual (reported)March 31, 2024
Actual (reported)March 31, 2024
Actual (reported)Proportion of live-born children with a delivery at term and a normal cardiac rhythm
Term delivery (≥37 0/7 weeks gestation) with a normal cardiac rhythm (ECG).
Term: 37 0/7 to 41 6/7 weeks
Proportion of patients with cardioversion over time
From date of randomization until the date of first documented cardioversion or until the date of delivery/fetal death without cardioversion, whichever comes first, assessed up to 30 gestational weeks
Proportion of participants with treatment failure
From date of randomization until the date of first documented fetal cardioversion or until the date of treatment failure, whichever comes first, assessed up to 30 gestational weeks
Atrial Flutter (AF) without hydrops: Treatment with Digoxin as monotherapy.
Atrial Flutter (AF) without hydrops: Treatment with Sotalol as monotherapy.
Supraventricular Tachycardia (SVT) without hydrops: Treatment with Digoxin as monotherapy.
Oral or IV loading dose: 0.5 mg q 12 h (total 4 doses over 48 hours) followed by Oral maintenance dose: 0.25 mg-1mg/day
Oral dose: 80 mg TID or 120 mg BID (240 mg/day)
UCSF Benioff Children's Hospital
San Francisco, California, 94158, United States
Children's Hospital of Colorado
Aurora, Colorado, 80045, United States
Children's National Health System
Washington D.C., District of Columbia, 20010, United States
Morgan Stanley Children's Hospital of New York-Presbyterian
New York, New York, 10032, United States
Cohen Children's Medical Center
New York, New York, 269-01, United States
Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, 45229, United States
Vanderbilt University Medical Center
Edgar Jaeggi, MD
The Hospital for Sick Children, Toronto
105 participants (actual enrollment reported by the registry).
First Submitted
November 30, 2015
First Posted
December 8, 2015
Study Start
February 2016
Actual (reported)Atrial Fibrillation Follow-up Investigation of Rhythm Management (AFFIRM)
Proportion of participants with arrhythmia-related death
From date of randomization to 30 days of life
Average gestational age at birth
At birth
Birth weight z-scores
At birth
Supraventricular Tachycardia (SVT) without hydrops: Treatment with Flecainide as monotherapy.
Supraventricular Tachycardia (SVT) with hydrops: Treatment with Digoxin and Sotalol.
Supraventricular Tachycardia (SVT) with hydrops: Treatment with Digoxin and Flecainide.
Oral or IV loading dose: 0.5 mg q 8 h (total 4 doses over 32 hours) followed by oral maintenance dose: 0.25 mg-1mg/day
Contact the study team to confirm eligibility.
Nashville, Tennessee, 37232, United States
Pediatrix Medical Services, Inc,
Austin, Texas, 78722, United States
Baylor College of Medicine
Houston, Texas, 77030, United States
University of Utah
Salt Lake City, Utah, 84112, United States
West Virginia University Research Corporation
Morgantown, West Virginia, 26506, United States
Children's Hospital of Wisconsin
Milwaukee, Wisconsin, 53226, United States
The Royal Women's Hospital
Melbourne, Victoria, Australia
University of Alberta/WCCHN
Edmonton, Alberta, Canada
British Columbia Children's Hospital
Vancouver, British Columbia, V6H 3N1, Canada
Mount Sinai Hospital
Toronto, Ontario, Canada
The Hospital for Sick Children
Toronto, Ontario, Canada
CHU Sainte-Justine Hospital
Montreal, Quebec, Canada
UKB Universitätsklinikum BONN
Bonn, Germany
Academic Medical Center - AMC
Amsterdam, Netherlands
Leiden University Medical Center - LUMC
Leiden, Netherlands
St George's University Hospital Foundation Trust
London, United Kingdom
Primary Completion
March 31, 2024
Actual (reported)Study Completion
March 31, 2024
Actual (reported)Last Updated
May 22, 2024
Record last verified: 2024-05
Not planned
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Source: ClinicalTrials.gov.
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