Are right ventricular risk scores useful?

Area of Science:

• Cardiology
• Cardiovascular Surgery
• Medical Devices

Background:

• Left ventricular assist device (LVAD) implantation is a critical treatment for advanced heart failure.
• Right ventricular (RV) failure is a significant complication following LVAD implantation.
• Predictive scores for RV failure after LVAD exist but require validation.

Purpose of the Study:

• To validate three established risk scores for predicting RV failure in patients receiving rotary blood pump LVADs.
• To identify independent predictors of RV support need post-LVAD implantation.

Main Methods:

• Retrospective analysis of preoperative data (clinical, echocardiographic, laboratory, hemodynamic) from 59 LVAD implantations.
• Calculation of three previously published predictive scores for all patients.
• Logistic regression analysis to determine predictors of RV support.

Main Results:

• Twenty-three point seven percent of patients required additional temporary RV support.
• The three validated scores did not significantly differ between groups and were not predictive of RV failure.
• High pulmonary vascular resistance and non-ischaemic cardiomyopathy were identified as significant predictors of RV support need.

Conclusions:

• Current risk scores are inadequate for predicting RV support requirements after LVAD implantation.
• Clinical judgment should be prioritized, and existing scores used with extreme caution for risk stratification.