The goal of the TIGHT K trial was to evaluate if prescribing relaxed control of potassium levels and only giving supplements in the rare event that levels became pathologically low was equally as effective in preventing atrial fibrillation (AFib) after cardiac surgery as tightly controlling levels.  

In this interview, Drs. Steven Nissen and Benjamin O’Brien discuss the TIGHT K trial results which proved that practitioners can safely cease the widespread practice of maintaining high-normal potassium levels after isolated coronary artery bypass grafting surgery. Additional benefits include improved tpatient experience and reduced patient cost. 

References: 

1. O’Brien B, Campbell NG, Allen E, et al; TIGHT K Investigators. Potassium supplementation and prevention of atrial fibrillation after cardiac surgery: the TIGHT K randomized clinical trial. JAMA 2024;332:979-88. 

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