Outcomes in Patients with Alagille Syndrome and Complex Pulmonary Artery Disease
Roger Luong1, Jeffrey A Feinstein1, Michael Ma2
1Department of Pediatrics, Lucille Packard Children's Hospital Stanford and Stanford University, Palo Alto, CA.
Insights
Pulmonary artery reconstruction surgery can lead to successful outcomes in Alagille syndrome (ALGS) patients with complex pulmonary artery disease. However, outcomes vary by diagnosis, with Tetralogy of Fallot and major aortopulmonary collateral arteries presenting the greatest challenges.
Area of Science:
- Cardiology
- Pediatric Surgery
- Genetics
Background:
- Alagille syndrome (ALGS) is a genetic disorder that can cause complex pulmonary artery disease.
- Pulmonary artery reconstruction surgery is a potential treatment for these patients.
- Outcomes of this surgery in ALGS patients are not well-established.
Purpose of the Study:
- To assess the outcomes of pulmonary artery reconstruction surgery in a large cohort of patients with Alagille syndrome.
- To compare outcomes based on the primary cardiovascular diagnosis.
Main Methods:
- Retrospective review of Alagille syndrome patients who underwent pulmonary artery reconstruction surgery.
- Cohort analysis based on diagnosis: severe isolated branch pulmonary artery stenosis, Tetralogy of Fallot (TOF) without major aortopulmonary collateral arteries (MAPCAs), or TOF with MAPCAs.
Main Results:
- Eighty percent of 51 ALGS patients achieved complete repair.
- Patients with TOF/MAPCAs had lower complete repair rates (25%) and worse outcomes compared to other groups.
- At 1.7 years follow-up, 76% of patients were alive with a complete repair.
Conclusions:
- Most ALGS patients with complex pulmonary artery disease can achieve complete repair with acceptable outcomes.
- TOF/MAPCAs are associated with higher mortality and increased need for interventions.
- Complex pulmonary artery disease does not preclude liver transplantation in ALGS patients.
Objective:
To assess outcomes in a large cohort of patients with Alagille syndrome (ALGS) who underwent pulmonary artery reconstruction surgery for complex pulmonary artery disease.
Study Design:
Patients with ALGS who underwent pulmonary artery reconstruction surgery at Lucile Packard Children's Hospital Stanford were reviewed. Patients were examined as an overall cohort and based on the primary cardiovascular diagnosis: severe isolated branch pulmonary artery stenosis, tetralogy of Fallot (TOF) without major aortopulmonary collateral arteries (MAPCAs), or TOF with MAPCAs.
Results:
Fifty-one patients with ALGS underwent pulmonary artery surgery at our center, including 22 with severe branch pulmonary artery stenosis, 9 with TOF without MAPCAs, and 20 with TOF and MAPCAs. Forty-one patients (80%) achieved a complete repair. Five of the patients with TOF with MAPCAs (25%) underwent complete repair at the first surgery, compared with 8 (89%) with TOF without MAPCAs and 19 (86%) with isolated branch pulmonary artery stenosis. At a median follow-up of 1.7 years after the first surgery, 39 patients (76%) were alive, 36 with a complete repair and a median pulmonary artery:aortic systolic pressure of 0.38. Nine patients (18%), including 8 with isolated branch pulmonary artery stenosis, underwent liver transplantation.
Conclusions:
Most patients with ALGS and complex pulmonary artery disease can undergo complete repair with low postoperative right ventricular pressure. Patients with TOF/MAPCAs had the worst outcomes, with higher mortality and more frequent pulmonary artery interventions compared with patients with TOF without MAPCAs or isolated branch pulmonary artery stenosis. Complex pulmonary artery disease is not a contraindication to liver transplantation in patients with ALGS.
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