This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.The purpose of this project is to see whether treatment with a thyroid hormone, called triiodothyronine or T3, following open heart surgery reduces the risk of developing atrial fibrillation. Some patients who undergo open heart surgery may develop atrial fibrillation in the post-operative period. Atrial fibrillation is an arrhythmia of the heart and is the most common post-operative complication. Prior studies have suggested that thyroid hormone may reduce the risk of developing atrial fibrillation and the need for additional treatment. The medication may make the heart beat stronger after coming off the heart lung machine, which is used during open heart surgery. If the heart beats stronger, other heart support medications may not be required at all or may be required for a shorter duration and/or at lower concentrations.
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