Causes of RVOT dysfunction after surgery

Causes of RVOT dysfunction after surgery

Following are some important causes of progressive RVOT dysfunction after repair surgeries for congenital heart disease:

1. Pulmonary regurgitation
2. Stenosis at the conduit anastomotic site
3. Somatic outgrowth
4. Stenosis of pulmonary valve
5. Kinking of the conduit
6. Compression due to sternal deformity
7. Intimal proliferation
8. Calcification of the conduit
9. Aneurysmal degeneration of the RVOT

Right ventricular outflow tract dysfunction is one of the most important long term sequelae of repair of Tetralogy of Fallot [1]. This can lead to exercise intolerance, cardiac arrhythmias and even sudden cardiac death. Percutaneous pulmonary valve implantation has been used in the management of this condition.

Reference

1. de Torres-Alba F, Kaleschke G, Baumgartner H. Impact of Percutaneous Pulmonary Valve Implantation on the Timing of Reintervention for Right Ventricular Outflow Tract Dysfunction. Rev Esp Cardiol (Engl Ed). 2018 Oct;71(10):838-846.