Atrial fibrillation in elderly patients after cardiac surgery: Postoperative hemodynamics and low postoperative serum triiodothyronine

Conclusions:In a group of elderly patients undergoing cardiac surgery, there was a strong association between a postoperative decrease of serum triiodothyronine levels and atrial fibrillation. The decrease of serum triiodothyronine levels was related to the changes of hemodynamic parameters only in the immediate postoperative period.