Transcatheter Fontan Stenting: Impact on Hepatic Stiffness and Exercise Capacity
The goal of this observational study is to assess the clinical impact following Fontan stent placement for extracardiac Fontan conduit (EFC) stenosis in patients with single-ventricle Fontan-palliated patients ages 12-21 years old. The main question it aims to: -Assess changes in exercise capacity by cardiopulmonary ex
| Condition(s) | Single-ventricle, Stenosis |
|---|---|
| Status | Recruiting |
| Study type | Observational |
| Summary | The goal of this observational study is to assess the clinical impact following Fontan stent placement for extracardiac Fontan conduit (EFC) stenosis in patients with single-ventricle Fontan-palliated patients ages 12-21 years old. The main question it aims to: -Assess changes in exercise capacity by cardiopulmonary exercise testing and liver stiffness assessed by shear wave elastography before and after EFC stenting. Participants will undergo two cardiopulmonary exercise tests and three shear wave elastography scans. |
| Who can participate | Inclusion Criteria: * Functionally single-ventricle Fontan-palliated patients undergoing clinically indicated cardiac catheterization * Anticipated Fontan stent placement for extracardiac Fontan conduit stenosis at the discretion of the primary operator * Weight ≥ 50 kg * 12-21 years of age Exclusion Criteria: * Interrupted IVC * Greater than mild atrioventricular valve regurgitation on most recent echocardiogram or MRI (RF \> 20%). * Greater than mild systemic ventricular dysfunction on most recent echo or MRI (EF \< 40%). * Non-sinus rhythm * Pacemaker * Inability to perform exercise test due to developmental or physical disability |
| Ages | 12 Years to 21 Years |
| Sex | All |
| Lead sponsor | Children's Hospital Los Angeles |
| Locations | Los Angeles, California, United States |
| Start date | 2025-08-01 |
| NCT ID | NCT07073612 |
| Official listing | https://clinicaltrials.gov/study/NCT07073612 |