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Aortic valve replacement with a pulmonary autograft in infants with critical aortic stenosis
G Südow1, L Solymar, H Berggren
1Department of Thoracic Surgery, University of Göteborg, Sweden.
Insights
The Ross operation, a pulmonary autograft aortic valve replacement, showed promising results in infants with critical aortic stenosis. Most survivors are medication-free, highlighting its potential for complex pediatric heart conditions.
Area of Science:
- Cardiology
- Pediatric Cardiac Surgery
Background:
- Critical aortic stenosis in infants presents a significant surgical challenge.
- Previous palliative procedures often fail, necessitating advanced interventions.
- The Ross operation offers a potential solution for severe aortic valve disease in neonates and infants.
Purpose of the Study:
- To evaluate the outcomes of the Ross operation in infants with critical aortic stenosis.
- To assess the efficacy and safety of pulmonary autograft use in this pediatric population.
Main Methods:
- Seven infants (age 5 weeks to 9 months) with critical aortic stenosis underwent the Ross operation.
- Most patients had prior failed palliative cardiac surgeries.
- One patient received the Ross procedure as a primary intervention for a hypoplastic aortic valve ring.
Main Results:
- Two operative deaths occurred, both associated with severe endocardial fibroelastosis.
- One late death 1 year post-operation was due to hypertrophic cardiomyopathy and pulmonary hypertension.
- The remaining patients are doing well, off medication, with good autograft function and only trivial regurgitation in two cases.
Conclusions:
- The Ross operation can be a life-saving procedure for infants with critical aortic stenosis, even after failed palliations.
- While risks exist, particularly with underlying conditions like endocardial fibroelastosis, the pulmonary autograft demonstrates durable function in survivors.
- This study supports the Ross operation as a viable option for select pediatric patients with severe aortic valve disease.
Abstract:
Seven patients with critical aortic stenosis underwent aortic valve replacement with a pulmonary autograft (the Ross operation) between the ages of 5 weeks and 9 months. The operation was considered mandatory for survival because of continued severe heart failure or valve avulsion. Six of the patients had undergone unsuccessful previous palliations, such as commissurotomy, balloon dilation, and transventricular valvotomy, performed singly (n = 1) or in combination (n = 5). The other patient with a severely hypoplastic aortic valve ring underwent the Ross procedure as a primary operation. Two operative deaths occurred. In both cases severe endocardial fibroelastosis was detected at autopsy. One late death 1 year after the operation resulted from progressive hypertrophic cardiomyopathy and pulmonary hypertension. The rest of the patients are doing well, without medications. Apart from trivial regurgitation in two patients, the pulmonary autograft is performing well.