Right-to-left atrial shunting with normal intracardiac pressures following cardiac surgery: Pathophysiology and management

We present a case of acute respiratory insufficiency with right-to-left atrial shunting under normal intracardiac pressures discovered several days after aortic surgery for aortic dissection. We discuss the possible mechanisms and management of right-to-left atrial shunting through an atrial septum defect with normal intracardiac pressures following cardiac surgery.

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