Tetralogy of Fallot Seed Grant

University of California San Francisco (UCSF)

Status: Completed

Conditions: Pulmonary Regurgitation After Repair of Tetralogy of Fallot

Study type: Observational

Funder types: Other

Identifiers

NCT00722826

H627-29142-02

UCSF Seed Grant FWA #00000068

Details and patient eligibility

About

Patients with pulmonary regurgitation after surgical correction of ToF over 13 years old will be recruited from the UCSF adult congenital heart disease clinic. Since there is no data in the literature describing the prevalence of abnormal MRI volumetric and functional parameters in asymptomatic patients with PR after ToF repair, a pilot study with 30 patients will be conducted. Increase in sample size may be necessary in the future to accurately interpret the data. After informed consent is obtained, clinical history and physical examination as well as review of old charts will be performed to characterize these patient's clinical status. All patients will undertake a graduated supine bicycle exercise test with MVO2 measurement to assess exercise capacity.

MRI studies will be performed in a 1.5 tesla unit. SSFP cine images will be obtained in the short-axis plane encompassing the entire heart. Velocity-encoded cine MR images will be obtained perpendicular to the direction of blood flow in the main pulmonary artery. Volumetric and flow analysis will be performed in a separate dedicated workstation by a radiologist. End-diastolic volume, end-systolic volume, ejection fraction, total ejection fraction and pulmonary regurgitant fraction will be calculated.

Enrollment: 82 patients

Sex: All

Ages: 13+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

Patients over 13 years of age with pulmonary regurgitation after surgical correction of tetralogy of Fallot.

1. Adult patients with pulmonary regurgitation after surgical repair of tetralogy of Fallot who are under follow-up at the adult congenital heart disease clinic at UCSF or
2. Pediatric patients with pulmonary regurgitation after surgical repair of tetralogy of Fallot who are under follow-up at the pediatric congenital heart disease clinic at UCSF and are referred for a clinically indicated cardiac MRI studies or
3. Adult and pediatric patients with pulmonary regurgitation after surgical repair of tetralogy of Fallot who are referred for clinically indicated MRI studies at UCSF.

Exclusion criteria

Contraindication for MRI study. Claustrophobia.