Active stimulation group:Patients receive active transcutaneous low-level right cymba conchae stimulation. The stimulation frequency is set to 25 Hz, pulse width in 250 µs, runs for 30 s and pauses f

The efficacy of transcutaneous low-level vagus nerve stimulation for preventing atrial fibrillation after on-pump coronary artery bypass grafting: a randomized, double-blind, interventional study

The efficacy of "transcutaneous low level vagus nerve stimulation" for preventing postoperative atrial fibrillation after cardiac valvular surgery under cardiopulmonary bypass: A randomized controlled, double-blind, interventional study.