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A 69-year old male was referred to our hospital for the treatment of coronary artery disease. Preoperative computed tomography (CT) revealed an abdominal aortic aneurysm (AAA) and a giant tumour of the left kidney. He underwent off-pump coronary artery bypass grafting (OPCAB) prior to aneurysmectomy and nephrectomy. Temporary epicardial pacing wires (TEPWs) were placed on the right atrium and right ventricle. The bipolar ventricular wire was removed and the unipolar atrial wire was cut flush with the skin surface on postoperative day 5. CT 7 days after the OPCAB procedure revealed a retained TEPW sutured to the right atrial wall. One month later, the patient underwent a repair of the AAA and left nephrectomy. We found that a TEPW had migrated inside the AAA intraoperatively. The retained TEPW was thus no longer observed on postoperative CT. Migration of the atrial pacing wire through the aortic lumen was suspected, although the detailed mechanism is unknown. This is the first reported case of a migrated temporary pacing wire into the aorta under noninfectious conditions.

Migration of a retained temporary epicardial pacing wire into an abdominal aortic aneurysm: Figure 1: