Related Experiment Video
Updated: Mar 10, 2026

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
Contegra 12 mm: How Long Can It Last?
Alessandro Falchetti1, Marie-Anne Pellegrin1, Ahmed Sanoussi1
11 Department of Congenital Cardiac Surgery, Hôpital Universitaire des Enfants Reine Fabiola (HUDERF), Brussels, Belgium.
Insights
Contegra conduits are used for right ventricular outflow tract reconstruction in infants. A 12-mm Contegra conduit showed durability, explanted after 16 years following truncus arteriosus repair.
Area of Science:
- Pediatric Cardiac Surgery
- Cardiovascular Research
- Biomaterial Science
Background:
- Contegra conduits have been utilized for right ventricular outflow tract (RVOT) reconstruction since 2000.
- Published data on early and late outcomes of Contegra conduits show variability.
- Durability concerns exist for small conduits implanted in young infants.
Observation:
- This report details an unusual case involving a 12-mm Contegra conduit.
- The conduit was implanted in an infant during truncus arteriosus repair.
- The conduit was explanted 16 years after the initial surgery.
Findings:
- The 12-mm Contegra conduit demonstrated long-term durability over 16 years.
- This case provides evidence of the extended performance of Contegra conduits in pediatric patients.
- No specific complications related to the conduit were mentioned in the context of explantation.
Implications:
- This case suggests potential for long-term efficacy of Contegra conduits in specific pediatric cardiac surgeries.
- Further long-term studies are warranted to confirm the durability and safety profile.
- This experience may inform future surgical decisions regarding RVOT reconstruction in neonates and infants.
Abstract:
Since the year 2000, we have used Contegra conduits for right ventricular outflow tract reconstruction in infants and newborns. Published reports of early and late results from multiple centers have included variable and inconsistent findings. Concerns about the durability of small conduits placed in younger infants have been expressed. We report an interesting experience with a 12-mm Contegra conduit that we explanted 16 years after implantation in the course of repair of truncus arteriosus (common arterial trunk) in an infant.
Related Concept Videos
Single Pipe Systems
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
Heart Valves
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Pipe Flowrate Measurement
The orifice meter is a simple,...

