Long-Term Effects of Pulmonary Valve Implantation and Prosthesis Evolution in Patients with Repaired Tetralogy of Fallot.

Background: Pulmonary valve regurgitation is a significant long-term complication in patients with tetralogy of Fallot (TOF).

Objective: This study aims to investigate the effects of pulmonary valve implantation (PVI) on the anatomy and function of the right ventricle (RV) and the long-term evolution of the implanted prosthesis in the pulmonary position.

Methods: A single-center retrospective cohort analysis was performed in 56 consecutive patients with TOF who underwent PVI.

A computer-based matrix for rapid calculation of pulmonary hemodynamic parameters in congenital heart disease.

Background: In patients with congenital heart disease undergoing cardiac catheterization for hemodynamic purposes, parameter estimation by the indirect Fick method using a single predicted value of oxygen consumption has been a matter of criticism.

Objective: We developed a computer-based routine for rapid estimation of replicate hemodynamic parameters using multiple predicted values of oxygen consumption.

Materials And Methods: Using Microsoft® Excel facilities, we constructed a matrix containing 5 models (equations) for prediction of oxygen consumption, and all additional formulas needed to obtain replicate estimates of hemodynamic parameters.