Left ventricular assist device inflow cannula implantation: Why a "Step sideways" technique can be helpful

Area of Science:

• Cardiovascular Surgery
• Medical Device Technology
• Cardiac Physiology

Background:

• Left ventricular assist devices (LVADs) are critical for end-stage heart failure treatment.
• Postoperative right heart failure remains a significant complication following LVAD implantation.
• Right ventricle vascularization, reliant on left coronary network collaterals, is vital for preventing this complication.

Observation:

• A novel technique for LVAD inflow cannula placement was applied in a bridge-to-transplantation case.
• The technique involves moderate lateral and inferior displacement of the inflow cannula.
• This specific positioning respects the critical coronary artery anatomy and ensures optimal LV unloading.

Findings:

• The modified cannula position preserved the vascularization of the right ventricle.
• It successfully avoided compromise of the left anterior descending coronary artery supplying collateral flow to the right coronary artery.
• Adequate orientation toward the mitral valve plane facilitated effective left ventricular unloading.

Implications:

• This technique offers a strategy to mitigate the risk of right heart failure after LVAD implantation.
• It highlights the importance of precise cannula positioning in relation to coronary anatomy.
• Potential for improved patient outcomes in LVAD therapy, particularly for those with complex coronary networks.