Influence of heart failure severity on heart rate variability
| Autor: | Dejan Simeunovic, Mirjana Zivkovic, Goran Vukomanovic, Danijela Zamaklar-Trifunovic, Vera Jelic, Milan Petrovic, M Petar Seferovic, D Arsen Ristic, Natasa Milic |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty heart failure lcsh:Medicine Autonomic regulation Nyha class Sudden cardiac death Heart Rate Internal medicine Medicine Heart rate variability Humans Spectral analysis Very low frequency Ejection fraction business.industry lcsh:R heart rate variability General Medicine Middle Aged medicine.disease spectral analysis Heart failure Cardiology Disease Progression Female business |
| Zdroj: | Srpski Arhiv za Celokupno Lekarstvo, Vol 133, Iss 11-12, Pp 484-491 (2005) |
| ISSN: | 0370-8179 |
| Popis: | Introduction. Autonomic regulation of cardiovascular functions in congestive heart failure is characterised by enhanced sympathetic and diminished parasympathetic activity. The long term predominance of sympathetic tone is a significant factor in arrhythmogenesis, sudden cardiac death, and progressive pump failure. Heart rate variability (HRV) is a noninvasive method for estimating the sympatho vagal balance in cardiovascular control. Aim. The aim of this study was to analyse the influence of heart failure severity on HRV. Method. HRV was estimated through the spectral analysis of short term ECG (Cardiovit AT 60, Schiller, CH) in 63 patients (78% male, mean age 56.9?10.9 years) and 14 healthy volunteers (57.1% male, mean age 53.1?8.2 years). The following spectral components were measured: VLF (very low frequency), LF (low frequency), HF (high frequency), and total power (Tot Power). Results. All spectral components were statistically, significantly lower in patients with heart failure in comparison to healthy controls (VLF: 159.89?147.02 vs. 285.50?202.77 ms2; p=0.023, LF: 161.48?204.01 vs. 474.57?362.93 ms2; p |
| Databáze: | OpenAIRE |
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