Liver Photo (IMAGE) Intermountain Medical Center Caption Atrial fibrillation patients taking warfarin, a popular anticoagulation drug, are at higher risk of developing kidney failure if anticoagulation levels are not properly managed, according to a new study from researchers at the Intermountain Medical Center Heart Institute. Credit Intermountain Medical Center Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.