Postoperative Complications
Major complications during the first 30 postoperative days included
cerebrovascular accident, mediastinitis, pneumonia, sepsis, renal
failure requiring dialysis, intra-aortic balloon pump, or reoperation. A
patient was considered to have had a postoperative ATA if they had any
episode or either AF or an ATA lasting longer than 30 seconds during
their postoperative hospital stay.