Introduction
Heart failure, HF
HEART FAILURE, SYNDROME
Heart failure (HF) is considered a serious syndrome affecting more than 23 million people worldwide.ANS (autonomic nervous system) imbalances have been observed in several diseasesRecently, a meta-analysisAuricular vagus nerve stimulation (aVNS) is produced by non-invasive electrical stimulation of the vagus nerve in the earThe regulation of autonomic balance mediated by VNS decreases sympathetic activity and causes the release of nitric oxide,There are no current studies on taVNS in HF. In the present study, we sought to analyze and hypothesize the applicability and benefit of taVNS in HFrER by comparing intergroup echocardiographic parameters, 6MWT, Holter heart rate variability (SDNN and rMSSD), MLHFQ