Planned reduction in Fontan fenestration size using the Atrial Flow Regulator

Area of Science:

• Cardiovascular Surgery
• Pediatric Cardiology
• Medical Device Innovation

Background:

• Fontan fenestration facilitates right-to-left shunting, enhancing cardiac output and systemic oxygen delivery.
• Improving cardiac function and ventricular pressures can paradoxically increase shunting, potentially reducing arterial oxygen saturation.
• Complete closure of the fenestration may compromise Fontan hemodynamics and reduce cardiac output.

Purpose of the Study:

• To introduce and describe the use of the Atrial Flow Regulator for managing Fontan fenestration size.
• To address the lack of dedicated devices for controlled reduction of Fontan fenestration.
• To explore a method for optimizing Fontan circulation through adjustable fenestration.

Main Methods:

• Utilizing the Atrial Flow Regulator device to achieve stepwise reduction in Fontan fenestration size.
• Clinical application and hemodynamic assessment following fenestration size modification.
• Evaluation of the device's efficacy in managing Fontan circulation parameters.

Main Results:

• The Atrial Flow Regulator enables precise and adjustable reduction of Fontan fenestration.
• Controlled fenestration size modification can potentially optimize Fontan hemodynamics.
• The device offers a new approach to managing the balance between shunting and cardiac output in Fontan patients.

Conclusions:

• The Atrial Flow Regulator is a promising device for Fontan fenestration size reduction.
• This innovation may improve the management of Fontan circulation and patient outcomes.
• Further studies are warranted to fully elucidate the long-term benefits and applications of this device.