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BioMed Research International
Volume 2013, Article ID 595369, 8 pages
http://dx.doi.org/10.1155/2013/595369
Clinical Study

The Usefulness of Impedance Cardiography for Predicting Beneficial Effects of Cardiac Rehabilitation in Patients with Heart Failure

1Department of Cardiology and Internal Diseases, Military Institute of Medicine, Szaserow Street 128, 04-141 Warsaw, Poland
2Telecardiology Center, Institute of Cardiology, Alpejska Street 42, 04-628 Warsaw, Poland
3Department of Cardiac Rehabilitation and Noninvasive Electrocardiology, Institute of Cardiology, Alpejska Street 42, 04-628 Warsaw, Poland

Received 23 April 2013; Accepted 22 July 2013

Academic Editor: Sakthivel Sadayappan

Copyright © 2013 Grzegorz Gielerak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aim. Cardiac rehabilitation (CR) is an important part of heart failure (HF) treatment. The aim of this paper was to evaluate if thoracic fluid content (TFC) measured by impedance cardiography (ICG) is a useful parameter for predicting the outcome of CR. Methods. Fifty HF patients underwent clinical and noninvasive haemodynamic (TFC) assessments before and after 8-week CR. Results. As a result of CR, the patients’ exercise tolerance improved, especially in terms of peak VO2 (18.7 versus 20.8 mL × kg−1 × min−1; ). TFC was found to identify patients with significantly improved peak VO2 after CR. “High TFC” patients (TFC > 27.0 kOhm−1), compared to those of “low TFC” (TFC < 27.0 kOhm−1), were found to have more pronounced increase in peak VO2 (1.3 versus 3.1 mL × kg−1 × min−1; ) and decrease in TFC (4.0 versus 0.7 kOhm−1; ). On the other hand, the patients with improved peak VO2 ( ) differed from those with no peak VO2 improvement in terms of higher baseline TFC values (28.4 versus 25.3 kOhm−1; ) and its significant decrease after CR (2.7 versus 0.2 kOhm−1; ). Conclusions. TFC can be a useful parameter for predicting beneficial effects of CR worth including in the process of patients’ qualification for CR.