Noninvasive Bioimpedance Methods From the Viewpoint of Remote Monitoring in Heart Failure (Preprint)

Abstract

UNSTRUCTURED Heart failure (HF) is a major clinical, social and economic problem. Due to the significant role of fluid overload in the pathogenesis of HF exacerbation, early detection of fluid retention is of key importance in preventing emergency admissions for this reason. However, tools for monitoring of volume status that could be widely used in a home setting are still missing. The physical properties of human tissues allow for the use of impedance based non-invasive methods, whose different modifications are tested in HF patients for the assessment of body hydration. The aim of this paper is to present current knowledge on the possible use of these methods for remote, home monitoring of HF patients.

Hemodynamic Response to Exercise Training in Heart Failure With Reduced Ejection Fraction Patients

“…However, we can find in the literature other ways to classify responders (R) and non-responders (NR) patients such as CO [14], oxygen convection, oxygen diffusion [21] or the relationship between minute ventilation and carbon dioxide production (V ̇E/V ̇CO 2 slope) [15], suggesting that other variables could be useful to assess exercise training response. In this context, non-invasive measurements of cardiac hemodynamics parameters during exercise, such as impedance cardiography (ICG), have been validated to assess the determinants of exercise intolerance in cardiac patients [24][25][26], in order to identify responder patients, to evaluate cardiovascular adaptations to exercise training and to predict prognosis after the CR program [27]. For now, ICG has been mainly used to assess clinical management, predict clinical events, or estimate risks for cardiac patients.…”