Try our beta test site

Trial of Cardiac Magnetic Resonance Imaging (MRI) Versus Cardiac Catheterization Prior to Glenn Operation

This study has been completed.
Information provided by:
Boston Children’s Hospital Identifier:
First received: June 2, 2005
Last updated: January 29, 2008
Last verified: January 2008
This study is a prospective, randomized study of patients with single ventricle heart disease who are to undergo superior cavo-pulmonary anastomosis, or "Glenn" operation. Such patients have historically undergone cardiac catheterization to ensure suitability for the procedure. Cardiac magnetic resonance imaging (cardiac MRI) is a newer technology that provides excellent anatomic and functional imaging of the heart. This study is designed to demonstrate our hypothesis that cardiac magnetic resonance imaging will provide comparable information to catheterization, with less side effects.

Condition Intervention
Congenital Heart Defects
Procedure: Diagnostic cardiac MRI
Procedure: Cardiac catheterization

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: Clinical Trial of Cardiac Magnetic Resonance Imaging in Routine Evaluation Prior to Superior Cavo-Pulmonary Anastomosis

Resource links provided by NLM:

Further study details as provided by Boston Children’s Hospital:

Primary Outcome Measures:
  • Toxicity profile for each group [ Time Frame: 3 Months Post-Glenn operation ]

Secondary Outcome Measures:
  • Operative and post-operative outcomes [ Time Frame: 30 days post-operation ]
  • Missed diagnoses [ Time Frame: 3 months post-Glenn operation ]
  • Cost [ Time Frame: Pre-operative evaluation ]
  • Clinical Definition of successful Glenn operation [ Time Frame: 3 months post-operatively ]

Enrollment: 80
Study Start Date: January 2004
Study Completion Date: January 2008
Primary Completion Date: June 2006 (Final data collection date for primary outcome measure)
Intervention Details:
    Procedure: Diagnostic cardiac MRI
    Routine cardiac MRI done under general anesthesia as pre-operative evaluation.
    Other Name: Cardiac Magnetic Resonance
    Procedure: Cardiac catheterization
    Routine cardiac catheterization prior to Glenn operation.
    Other Name: Cardiac cath.
Detailed Description:
This is a prospective, randomized study of patients with single ventricle congenital heart disease presenting for superior cavo-pulmonary anastomosis, or "Glenn" operation. Such patients in the past have routinely undergone pre-operative invasive cardiac catheterization to assess anatomic and hemodynamic suitability for this procedure. Recent retrospective reviews, including our own (J Thorac Cardiovasc Surg 2003: July;126(1):272-81) have suggested that such catheterization may not benefit many patients, and that non-invasive assessment may allow adequate evaluation while avoiding many (typically minor) complications seen with cardiac catheterization in this high risk group of infants. Cardiac MRI is a non-invasive imaging modality that can deliver superior anatomic information (such as vascular and intracardiac anatomy) as well as functional data (ventricular volumes and ejection fraction), and may be a safe alternative to catheterization in such patients. In this study, patients undergo screening echocardiogram prior to enrollment in the study to assess degree of risk for the operation (such as pulmonary vein obstruction, a clear risk factor for poor outcome) or for demonstrated need for catheterization intervention (such as aortic arch obstruction requiring balloon dilation); patients with low risk echocardiograms whose parents grant informed consent for the study are then randomized in a prospective fashion to cardiac MRI or cardiac catheterization. The findings of each study are then reviewed by the subject's cardiologist and cardiac surgeon; patients in whom further pre-operative information may cross over to another study if deemed necessary (such as catheterization in patients in whom an unsuspected finding is noted, or cardiac MRI in patients in whom further functional data may be desired). Patients are followed for details of the hospital stay (including hospital length of stay, complications, hospital charges) for the pre-operative testing, as well as operative and post-operative outcomes (new/missed diagnoses, hospital stay, operative and post-operative complications, achievement of a clinical definition of a "good" outcome from the Glenn operation).

Ages Eligible for Study:   6 Weeks to 5 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Single ventricle heart disease patients presenting for Glenn operation

Exclusion Criteria:

  • Aortic arch obstruction
  • Pulmonary vein stenoses
  • Severe ventricular dysfunction
  • Pulmonary hypertension
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00112424

United States, Massachusetts
Childrens Hospital, Boston
Boston, Massachusetts, United States, 02115
Sponsors and Collaborators
Boston Children’s Hospital
Principal Investigator: David W. Brown, MD Childrens Hospital Boston
  More Information

Responsible Party: David W. Brown, MD. Principal Investigator, Childrens Hospital Boston Identifier: NCT00112424     History of Changes
Other Study ID Numbers: CH 02-12-155
Study First Received: June 2, 2005
Last Updated: January 29, 2008

Keywords provided by Boston Children’s Hospital:
Superior cavo-pulmonary anastomosis
Glenn operation
Congenital heart defects
Cardiac magnetic resonance imaging

Additional relevant MeSH terms:
Heart Defects, Congenital
Cardiovascular Abnormalities
Cardiovascular Diseases
Heart Diseases
Congenital Abnormalities processed this record on March 27, 2017