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Cardiac Autonomic Control in Relation to Other Prognostic Markers in Idiopathic Dilated Cardiomyopathy

World Journal of Cardiovascular Diseases 2015年第5期5卷 107-119页

作者： satu karkkainen Ari Puhakka Jan Fedacko Jarkko Magga Kati Miettinen Esko Vanninen Johanna Kuusisto Keijo J. Peuhkurinen Petri O. Tuomainen Department of Internal Medicine Kuopio University Hospital and University of Eastern Finland Kuopio Finland Heart Center Kuopio University Hospital and University of Eastern Finland Kuopio Finland Center of Preventive and Sports Medicine Safarik University and Pasteur Hospital Kosice Slovakia Department of Clinical Physiology and Nuclear Medicine Kuopio University Hospital and University of Eastern Finland Kuopio Finland

Objectives: We set out to study cardiac autonomic tone in patients with idiopathic dilated cardio-myopathy (IDC), and whether it correlates with other established markers of disease progression and patient ultimate outcome. Design: Fifty-one IDC patients in sinus rhythm underwent extensive non-invasive and invasive evaluation during a three-day hospitalization period. The control group consisted of thirty-eight apparently healthy subjects who underwent 24-hour ambulatory ECG recording. Results: Heart rate variability (HRV) and heart rate turbulence (HRT) correlated with many previously established prognostic markers of IDC and congestive heart failure, especially measures of cardiorespiratory performance capacity and circulating neurohumoral factors (p < 0.05 for all). Furthermore, attenuated HRV correlated with worse prognosis during a median follow-up of 6.8 years (range 5.1 - 8.1). Additionally, 24-hour time domain, low and high frequency components of frequency domain and non-linear HRV, excluding scaling exponents (α), were lower in IDC patients as compared with controls (p < 0.05 for all);however, HRT was not significantly different. Conclusions: The magnitude of impairment in cardiac autonomic control correlates well with other prognostic markers of IDC, and is associated with unfavorable outcome.

关键词： Heart Rate Variability Heart Rate Turbulence Cardiorespiratory Fitness Vasoactive Peptides Proinflammatory Cytokines

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