Anteroposterior chest X-ray. The right internal jugular cannula is visible. Arrow, catheter tip. Suture of the catheter tip to the heart was highly suspected, and another thoracotomy was scheduled on postoperative day eight. Movement was noted at the interatrial groove incision near the atrial-caval junction while extracting the catheter. Four needles were made with mattress suture around the interatrial groove incision, and the catheter was removed easily after loosening the original threads, which suggested that the catheter had been sutured to the atrial septal tissue. Our patient had an uneventful recovery and the endotracheal tube was extracted the next day.