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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Fontan Operation Clear all
Completed Not applicable Interventional Results available

Spironolactone in Patients With Single Ventricle Heart

NCT00211081
View directory record Official record
Conditions
Congenital Disorders
Interventions
Spironolactone (drug)
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Jul 22, 2026, 8:11 AM EDT
Terminated Phase 4 Interventional Results available

Aspirin as a Novel Anti-Inflammatory Modality in the Fontan Patients

NCT02966002
View directory record Official record
Conditions
Fontan Procedure
Interventions
Aspirin
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 17, 2018 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational

Cerebral Blood Flow in Single Ventricles Throughout Staged Surgical Reconstruction

NCT02135081
View directory record Official record
Conditions
Single Ventricle Defect
Interventions
Not listed
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
4 Months to 10 Years
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 18, 2018 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Not applicable Interventional

Re-Energize Fontan

NCT04195451
View directory record Official record
Conditions
Single-ventricle
Interventions
Live-Video-Supervised Exercise Intervention, Usual Care then Live-Video Supervised Exercise Intervention
Other
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 19 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 3 Interventional Results available

A Extension Study of Udenafil in Adolescents

NCT03013751
View directory record Official record
Conditions
Functional Single Ventricle Heart Disease
Interventions
Udenafil
Drug
Lead sponsor
Mezzion Pharma Co. Ltd
Industry
Eligibility
12 Years to 18 Years
Enrollment
301 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
21
States / cities
Phoenix, Arizona • Los Angeles, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin C on Endothelial Function and Exercise Capacity in Fontan-Palliated Patients

NCT00974025
View directory record Official record
Conditions
Fontan Procedure, Hypoplastic Left Heart Syndrome, Tricuspid Atresia
Interventions
Vitamin C, Placebo
Dietary Supplement
Lead sponsor
University of Michigan
Other
Eligibility
8 Years to 25 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 2Phase 3 Interventional Results available

The Effects of Inhaled Nitric Oxide After Fontan Operation

NCT00945529
View directory record Official record
Conditions
Congenital Heart Defect
Interventions
inhaled nitric oxide (iNO)
Drug
Lead sponsor
Ellen Spurrier
Other
Eligibility
1 Year to 5 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced Jul 22, 2026, 8:11 AM EDT
Terminated Not applicable Interventional Results available

Perioperative Treprostinil in Pediatric Patients Undergoing the Fontan Operation

NCT02498444
View directory record Official record
Conditions
Single Ventricle
Interventions
Treprostinil
Drug
Lead sponsor
Stanford University
Other
Eligibility
1 Year to 18 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 30, 2022 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Development of 4D Flow MRI for Risk Stratification of Variceal Bleeding in Cirrhosis

NCT04867954
View directory record Official record
Conditions
Cirrhosis, Liver, Gastroesophageal Varices, Fontan Procedure
Interventions
Ensure Plus®, Pre-clinical validation contrast enhanced MRI, Clinical validation MRI, Pre-clinical validation contrast enhanced MRI + fasting
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Jul 22, 2026, 8:11 AM EDT
Terminated No phase listed Observational

Pulmonary Resistance in Fontan Who Have Undergone Heart Transplantation

NCT00268047
View directory record Official record
Conditions
Congenital Disorders
Interventions
Not listed
Lead sponsor
Children's Healthcare of Atlanta
Other
Eligibility
Up to 21 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 5, 2011 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Not applicable Interventional Results available

Stage 3 Fontan Operation Liver Ultrasound Study

NCT02269709
View directory record Official record
Conditions
Fontan Operation
Interventions
ARFI Ultrasound
Device
Lead sponsor
University of Michigan
Other
Eligibility
Up to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 11, 2018 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational

Ventricular and Pulmonary Vascular Reserve After the Fontan Operation

NCT03853837
View directory record Official record
Conditions
Heart Failure, Congenital Heart Disease
Interventions
rest-exercise echocardiography
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 99 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 5, 2022 · Synced Jul 22, 2026, 8:11 AM EDT
Recruiting Phase 3 Interventional

Study of Tadalafil vs. Placebo for Improving Hemodynamics and End-Organ Dysfunction in Fontan Physiology

NCT05206955
View directory record Official record
Conditions
Fontan Palliation
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jul 22, 2026, 8:11 AM EDT
Terminated No phase listed Observational

Development of Novel MRI Methods for Detecting, Discriminating, and Measuring Liver Fibrosis and Congestion in Fontan Patients

NCT03539757
View directory record Official record
Conditions
Liver Fibrosis
Interventions
Non-Contrast Magnetic Resonance Imaging
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
8 Years to 99 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 6, 2024 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Pharmacokinetic/Pharmacodynamic Study of Udenafil in Adolescents

NCT02201342
View directory record Official record
Conditions
Single Ventricle Heart Disease After Fontan Surgery
Interventions
Udenafil
Drug
Lead sponsor
Mezzion Pharma Co. Ltd
Industry
Eligibility
14 Years to 18 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
5
States / cities
Indianapolis, Indiana • Ann Arbor, Michigan • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated May 5, 2025 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 2 Interventional Results available

Transfusion Strategies in Pediatric Cardiothoracic Surgery

NCT00350220
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
transfusion strategy, Low Hb transfusion group
Other
Lead sponsor
University of Rochester
Other
Eligibility
4 Months to 7 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2015 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 3 Interventional Results available

Pharmacokinetic, Pharmacodynamic, Safety, and Efficacy Study of Rivaroxaban for Thromboprophylaxis in Pediatric Participants 2 to 8 Years of Age After the Fontan Procedure

NCT02846532
View directory record Official record
Conditions
Thrombosis
Interventions
Rivaroxaban, Acetylsalicylic Acid
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
2 Years to 8 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
17
States / cities
Los Angeles, California • Gainesville, Florida • Oak Lawn, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Upright Versus Supine Exercise Testing in Fontan-palliated Patients

NCT00633815
View directory record Official record
Conditions
Fontan Palliation
Interventions
Supine positioning, Upright positioning
Other
Lead sponsor
University of Michigan
Other
Eligibility
8 Years to 30 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Jul 22, 2026, 8:11 AM EDT
Terminated Phase 2 Interventional Results available

Effects of Perioperative Nesiritide or Milrinone Infusion on Recovery From Fontan Surgery

NCT00543309
View directory record Official record
Conditions
Heart Defects, Congenital
Interventions
nesiritide, milrinone, placebo
Drug
Lead sponsor
John M Costello
Other
Eligibility
Not listed
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 24, 2018 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Early Use of Vasopressin in Post-Fontan Management

NCT03088345
View directory record Official record
Conditions
Circulatory Perfusion Disorder, Congenital Heart Disease, Single-ventricle
Interventions
Vasopressin, Arginine, Placebo
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
3 Weeks to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 6, 2020 · Synced Jul 22, 2026, 8:11 AM EDT
Completed Phase 4 Interventional Results available

Study of Effects of Sildenafil on Patients With Fontan Heart Circulation

NCT01815502
View directory record Official record
Conditions
Single Ventricle Heart Disease After Fontan Surgery
Interventions
Cardiac catheterization
Diagnostic Test
Lead sponsor
Medical University of South Carolina
Other
Eligibility
3 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational

Ocular and Vision Problems in Patients After Fontan Operation

NCT03170778
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 3, 2022 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational

Fontan Imaging Biomarkers (FIB) Study

NCT03119090
View directory record Official record
Conditions
Single-ventricle, Congenital Heart Disease
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
3 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Jul 22, 2026, 8:11 AM EDT
Completed No phase listed Observational

Diffuse Myocardial Fibrosis in Fontan Patients

NCT01929174
View directory record Official record
Conditions
Congenital Heart Disease, Single Ventricle, Myocardial Fibrosis
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 90 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 15, 2019 · Synced Jul 22, 2026, 8:11 AM EDT