The Role of High-Normal Potassium Levels in the Maintenance of Sinus Rhythm Following Cardiac Surgery in Patients with Persistent Atrial Fibrillation - Pisekar, Kiran Kishor; Shah, Ritesh; Patel, Kaushal; Patel, Ramesh; Sharma, Bhawana; Sangwan, Cheshta; Shah, Pratik (The Research in Heart Yield and Translational Medicine (RHYTHM), 2026)