Temporary Right Ventricular Support Using the Existing Bypass Circuit During LVAD Implantation

Area of Science:

• Cardiovascular Surgery
• Mechanical Circulatory Support
• Heart Failure Management

Background:

• Right-sided heart failure (RV failure) is a significant complication following left ventricular assist device (LVAD) implantation.
• Developing strategies for expedient short-term right ventricular support during LVAD procedures is crucial.

Purpose of the Study:

• To develop and evaluate a technique for immediate right ventricular (RV) support using the existing cardiopulmonary bypass (CPB) circuit during LVAD implantation.
• To assess the efficacy of this modified CPB technique in high-risk patients prone to RV failure.

Main Methods:

• A modified cardiopulmonary bypass (CPB) circuit was employed, incorporating four wye (Y) connections.
• This modification allowed for the exclusion of the venous reservoir and oxygenator, enabling the flow of venous or arterialized blood through the same CPB outflow line.

Main Results:

• Six high-risk patients for early RV failure underwent LVAD implantation using the modified CPB technique between 2019 and 2022.
• All six patients were successfully weaned from CPB to LVAD support without requiring additional RV support post-procedure.

Conclusions:

• The described technique offers a flexible approach to manage right ventricular failure during the critical post-CPB period in LVAD recipients.
• This method facilitates intraoperative RV recovery and successful separation from CPB, enhancing patient outcomes.