The paper presents a fast impedance spectroscopy method for objects with very high impedance |Zx|≥1GΩ modeled by multi-element two-terminal RC networks. The method is based on analysis of the object response in the time domain after square pulse excitation. The object impedance spectrum was obtained using continuous Fourier transform. Simulation tests were performed for different excitation pul...

BACKGROUND Cardiac rehabilitation (CR) is an important element of heart failure (HF) treatment although the mechanisms of its beneficial effects remain debatable. AIM To evaluate the haemodynamic effects of CR measured by impedance cardiography in patients with HF. METHODS Study group included 50 HF patients (aged 56.2 ± 8.8 years, NYHA class II and III, left ventricular ejection fraction ≤...

The aim of this paper is the presentation of recent advancements in impedance cardiography regarding methodical approach, applied equipment and clinical or research implementations. The review is limited to the papers which were published over last 17 months (dated 2011 and 2012) in well recognised scientific journals. (Cardiol J 2012; 19, 5: 550–556)

OBJECTIVE We studied the relationship between systolic blood pressure and hemodynamics using impedance cardiography in elderly Han residents in order to evaluate how different hemodynamic variables are altered with normal aging and with hypertension superimposed on aging. METHODS A total of 670 subjects, aged 60-93 years, were evaluated with impedance cardiography for non-invasive hemodynamic...