Right Ventricular Function Score by Echocardiography for Predicting Outcomes After Heart Transplantation

Area of Science:

• Cardiology
• Transplantation Medicine
• Echocardiography

Background:

• Right ventricular (RV) dysfunction is a concern after heart transplantation (HT).
• Predicting adverse events in HT patients requires robust functional assessment.

Purpose of the Study:

• To develop a simple echocardiography-based score to predict adverse clinical events in patients post-heart transplantation.
• To evaluate the predictive capability of this novel score compared to individual parameters.

Main Methods:

• Retrospective analysis of 357 heart transplant recipients undergoing echocardiography.
• Multivariate Cox regression identified independent predictors of RV function for adverse events.
• A Right Ventricular Function Score (RVFS) was constructed using RV fractional area change, tricuspid annular plane systolic excursion, and RV free wall longitudinal strain.

Main Results:

• A composite of death and major adverse cardiac events occurred in 51 patients over a median follow-up of 39 months.
• The RVFS demonstrated superior predictive performance (AUC 0.84) compared to individual RV function parameters (AUC 0.64-0.78).
• Incorporating RVFS into a clinical model significantly improved prediction accuracy (C-statistic from 0.70 to 0.83).

Conclusions:

• The RVFS is a readily obtainable echocardiographic score.
• This score combines multiple RV function parameters, offering incremental value for predicting adverse outcomes.
• The RVFS shows significant potential as a robust predictor in clinically stable heart transplant patients.