A Case Report of an Asymptomatic Patient with Atrial Fibrillation Improved with Complex Korean Medicine Treatment Including <i>Sayeok-san</i> (四逆散, Sìnì sǎn): Use of 72-Hour Patch-Type Holter Monitoring

Objectives: To report a case of asymptomatic atrial fibrillation (AF) in which AF suppression and reduced supraventricular ectopic (SVE) burden were achieved with complex Korean medicine (KM) treatment.Case presentation: A male patient in his late 70s with antiarrhythmic-refractory AF received a 7-week KM regimen consisting of acupuncture and sequential herbal treatment with modified <i>Sihogyejigeongang-tang</i> followed by <i>Sayeok-san-based</i> formulas. Treatment response was evaluated using pretreatment and posttreatment 72-hour Holter monitoring. Baseline monitoring showed an AF burden of 8.61% and an SVE burden of 6.19% (18,129 beats). On Day 49, follow-up monitoring demonstrated no detectable AF episodes (AF burden, 0%) and a reduced SVE burden of 0.57% (1,704 beats).Conclusions: Complex KM centered on modified <i>Sayeok-san</i> may represent a viable alternative for managing asymptomatic AF and reducing arrhythmic triggers, although further controlled studies are warranted.