Influence of heart failure severity on heart rate variability

Abstract

Significant HRV reduction is a precursor to incipient heart failure (NYHA I). In heart failure progression, total power as well as the power of all spectral components is progressively reduced. LF and Tot Power are the most prominent parameters for discriminating between the different stages of heart failure. These results could promote HRV as an important decision-making tool in heart failure treatment as well as in monitoring the results of that treatment.

Ventricular arrhythmic disturbances and autonomic modulation after beating-heart revascularization in patients with pulmonary normotension

“…However, the contribution of the alteration in pulmonary pressure to changes of autonomic regulation has not been completely clarified [6,7]. Some animal models and clinical studies suggest that pulmonary hypertension might be associated with sympathovagal imbalance resulting from increased sympathetic activity [6][7][8][9].…”