Overview
Congenital supravalvular aortic stenosis (SVAS) is a developmental disorder characterized by narrowing at the supravalvular region of the aortic valve, often associated with elastin gene mutations and sometimes seen in conjunction with Williams syndrome 4.Diagnosis
Echocardiography is essential for diagnosis, identifying the characteristic narrowing above the aortic valve 1.
Presence of associated anomalies such as pulmonary artery stenosis and coronary anomalies should be evaluated 1.
Genetic testing may be considered to identify elastin gene mutations, particularly in familial cases 4.Management
Surgical Repair: Primary treatment involves surgical repair using techniques like single patch, pantaloon-shaped patch, or 3-patch methods 1.
Extended Aortoplasty: Modification involving additional patch placement in the left coronary sinus can improve aortic root symmetry 2.
Postoperative Care: Close monitoring for complications such as postoperative morbidity and mortality, with a focus on early detection and management 1.Special Populations
Adults: SVAS can present in adulthood without Williams syndrome, indicating the need for broad diagnostic consideration 3.
Pediatrics: Early surgical intervention is crucial due to the high risk of complications in pediatric patients 1.Key Recommendations
Perform surgical repair using appropriate patch techniques for congenital SVAS to achieve optimal outcomes (Evidence: Strong 1).
Consider genetic testing for elastin gene mutations in familial cases to guide prognosis and management (Evidence: Moderate 4).
Regular echocardiographic follow-up is essential post-surgery to monitor for reintervention needs and late complications (Evidence: Moderate 1).References
1 Padalino MA, Frigo AC, Comisso M, Kostolny M, Omeje I, Schreiber C et al.. Early and late outcomes after surgical repair of congenital supravalvular aortic stenosis: a European Congenital Heart Surgeons Association multicentric study. European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2017. link
2 Steinberg JB, Delius RE, Behrendt DM. Supravalvular aortic stenosis: a modification of extended aortoplasty. The Annals of thoracic surgery 1998. link01075-8)
3 Ozergin U, Sunam GS, Yeniterzi M, Yüksek T, Solak T, Solak H. Supravalvular aortic stenosis without Williams syndrome. The Thoracic and cardiovascular surgeon 1996. link
4 Morris CA, Loker J, Ensing G, Stock AD. Supravalvular aortic stenosis cosegregates with a familial 6; 7 translocation which disrupts the elastin gene. American journal of medical genetics 1993. link