A new technique for perfusion of the heart during aortic valvular surgery on a beating heart

Area of Science:

• Cardiovascular Surgery
• Cardiac Perfusion
• Myocardial Protection

Background:

• Traditional cardiopulmonary bypass can induce myocardial ischemia.
• Beating heart surgery offers potential advantages but requires effective myocardial protection.
• Aortic valve surgery often necessitates interruption of coronary blood flow.

Purpose of the Study:

• To present a new dual-perfusion technique for beating heart aortic valve and combined surgeries.
• To describe the inflow system for coronary sinus and ostial perfusion.
• To discuss the advantages of this innovative perfusion strategy.

Main Methods:

• Utilized a dual system for heart perfusion during beating heart surgery.
• Coronary sinus was perfused using a calibrated centrifugal pump connected to an oxygenator.
• Coronary ostia were perfused with blood delivered via an ascending aortic cannula.

Main Results:

• Successfully implemented a dual-source perfusion system for the heart.
• Demonstrated a method for perfusing both the coronary sinus and ostia.
• Facilitated aortic valvular and combined aortic valvular and coronary artery surgery on a beating heart.

Conclusions:

• The presented dual-perfusion technique offers a novel approach to myocardial protection.
• This method allows for effective perfusion during complex beating heart cardiac surgeries.
• The technique holds promise for improving outcomes in aortic valve and coronary artery procedures.