Extracorporeal circulation for port-access cardiac surgery

Area of Science:

• Cardiovascular Surgery
• Minimally Invasive Techniques
• Medical Device Technology

Background:

• Minimally invasive cardiac surgery offers benefits like reduced patient discomfort and shorter recovery times.
• Traditional minimally invasive approaches are limited to epicardial procedures due to the lack of cardiopulmonary bypass.
• Existing methods often require pharmacological heart rate reduction for certain operations.

Purpose of the Study:

• To introduce and describe the port-access cardiac surgery technique.
• To highlight its ability to combine minimally invasive benefits with cardiopulmonary bypass advantages.
• To demonstrate its applicability to a broader spectrum of cardiac procedures.

Main Methods:

• Utilizes anterior mediastinotomy and thoracic ports with specialized endovascular catheters.
• Employs an endoaortic occlusion balloon for heart arrest, preservation, and venting.
• Integrates endovascular catheters with a modified heart-lung machine for cardiopulmonary support via femoral cannulae.
• Requires a kinetic pump for augmented venous return and specific management parameters for the bypass system.

Main Results:

• Successfully enables cardiopulmonary bypass and myocardial preservation within a minimally invasive framework.
• Facilitates a wider application of minimally invasive surgery to both epicardial and intracardiac procedures.
• Maintains complete cardiopulmonary support through extrathoracic cannulation.

Conclusions:

• Port-access cardiac surgery expands the scope of minimally invasive cardiac operations.
• This technique preserves the advantages of cardiopulmonary bypass while enhancing patient outcomes.
• It represents a significant advancement in performing complex cardiac procedures with less invasiveness.