A Multiphysics Modeling Approach to Develop Right Ventricle Pulmonary Valve Replacement Surgical Procedures with a...

Area of Science:

• Cardiology
• Biomedical Engineering
• Cardiovascular Surgery

Background:

• Late-onset right ventricle (RV) failure is a significant complication in patients with repaired tetralogy of Fallot.
• Current treatments for RV failure have limited efficacy, necessitating innovative approaches.

Purpose of the Study:

• To introduce and evaluate the feasibility of a new surgical procedure involving an elastic band to enhance RV function.
• To assess the potential of the proposed intervention to improve right ventricle ejection fraction (RVEF) in this patient population.

Main Methods:

• A multiphysics modeling approach was employed, integrating cardiac magnetic resonance imaging (CMR) and mechanical testing.
• The study combined advanced modeling techniques with tissue engineering principles to simulate the surgical procedure's effects.
• Feasibility was demonstrated through computational simulations of the proposed intervention.

Main Results:

• The multiphysics modeling predicted a potential improvement in right ventricle ejection fraction (RVEF) of 2-7%.
• These projected improvements compare favorably with outcomes reported for drug therapies in left ventricle (LV) heart failure.
• The simulation results support the viability of the elastic band placement for RV support.

Conclusions:

• The proposed surgical procedure demonstrates potential as a novel therapeutic strategy for RV failure in repaired tetralogy of Fallot.
• Multiphysics modeling provides a robust platform for assessing the feasibility and potential efficacy of innovative cardiac surgical interventions.
• This approach offers a promising avenue for improving RV function and patient outcomes in complex congenital heart disease.