Abstract
Background: A profound autonomic unbalance is present in heart failure: its correlation with the etiology of the disease has never been investigated. Aims: We characterized the sympatho-vagal balance and autonomic responsiveness of 42 patients (21 with ischemic heart failure, 21 with idiopathic dilated cardiomyopathy). Patients had comparable NYHA class, ejection fraction, exercise pVo2, exercise ventilatory response, incidence of β-blocking treatment. None showed periodic breathing or nocturnal arterial desaturation. Methods: Heart rate variability was assessed in the time and frequency domain during: (1) 10 min of quiet supine resting and free breathing: (2) 10 min of regular breathing at a frequency of 20 acts/min (= parasympathetic stimulus); and (3) 10 min of active standing (= sympathetic stimulus). The ratio of the low- to high-frequency components of each autospectrum obtained in the frequency domain (LF/HF) was used as an index of sympathovagal balance. Results: Patients with ischemic heart failure had a greater baseline sympathetic activation (higher LF/HF) than those with idiopathic dilated cardiomyopathy, maintaining some parasympathetic responsiveness as well (reduced LF/HF with regular breathing). Conclusions: There is a distinct autonomic control according to the etiology of heart failure, a finding that may help understanding its pathophysiology, and could be useful in the clinical management of patients.
| Original language | English |
|---|---|
| Pages (from-to) | 197-202 |
| Number of pages | 6 |
| Journal | European Journal of Heart Failure |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2001 |
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Keywords
- Autonomic nervous system
- Heart failure
- Idiopathic dilated cardiomyopathy
- Ischemic heart disease
- Sympatho-vagal balance
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Different baseline sympathovagal balance and cardiac autonomic responsiveness in ischemic and non-ischemic congestive heart failure. / Malfatto, G.; Branzi, G.; Gritti, S.; Sala, L.; Bragato, R.; Perego, G. B.; Leonetti, G.; Facchini, M.
In: European Journal of Heart Failure, Vol. 3, No. 2, 2001, p. 197-202.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Different baseline sympathovagal balance and cardiac autonomic responsiveness in ischemic and non-ischemic congestive heart failure
AU - Malfatto, G.
AU - Branzi, G.
AU - Gritti, S.
AU - Sala, L.
AU - Bragato, R.
AU - Perego, G. B.
AU - Leonetti, G.
AU - Facchini, M.
PY - 2001
Y1 - 2001
N2 - Background: A profound autonomic unbalance is present in heart failure: its correlation with the etiology of the disease has never been investigated. Aims: We characterized the sympatho-vagal balance and autonomic responsiveness of 42 patients (21 with ischemic heart failure, 21 with idiopathic dilated cardiomyopathy). Patients had comparable NYHA class, ejection fraction, exercise pVo2, exercise ventilatory response, incidence of β-blocking treatment. None showed periodic breathing or nocturnal arterial desaturation. Methods: Heart rate variability was assessed in the time and frequency domain during: (1) 10 min of quiet supine resting and free breathing: (2) 10 min of regular breathing at a frequency of 20 acts/min (= parasympathetic stimulus); and (3) 10 min of active standing (= sympathetic stimulus). The ratio of the low- to high-frequency components of each autospectrum obtained in the frequency domain (LF/HF) was used as an index of sympathovagal balance. Results: Patients with ischemic heart failure had a greater baseline sympathetic activation (higher LF/HF) than those with idiopathic dilated cardiomyopathy, maintaining some parasympathetic responsiveness as well (reduced LF/HF with regular breathing). Conclusions: There is a distinct autonomic control according to the etiology of heart failure, a finding that may help understanding its pathophysiology, and could be useful in the clinical management of patients.
AB - Background: A profound autonomic unbalance is present in heart failure: its correlation with the etiology of the disease has never been investigated. Aims: We characterized the sympatho-vagal balance and autonomic responsiveness of 42 patients (21 with ischemic heart failure, 21 with idiopathic dilated cardiomyopathy). Patients had comparable NYHA class, ejection fraction, exercise pVo2, exercise ventilatory response, incidence of β-blocking treatment. None showed periodic breathing or nocturnal arterial desaturation. Methods: Heart rate variability was assessed in the time and frequency domain during: (1) 10 min of quiet supine resting and free breathing: (2) 10 min of regular breathing at a frequency of 20 acts/min (= parasympathetic stimulus); and (3) 10 min of active standing (= sympathetic stimulus). The ratio of the low- to high-frequency components of each autospectrum obtained in the frequency domain (LF/HF) was used as an index of sympathovagal balance. Results: Patients with ischemic heart failure had a greater baseline sympathetic activation (higher LF/HF) than those with idiopathic dilated cardiomyopathy, maintaining some parasympathetic responsiveness as well (reduced LF/HF with regular breathing). Conclusions: There is a distinct autonomic control according to the etiology of heart failure, a finding that may help understanding its pathophysiology, and could be useful in the clinical management of patients.
KW - Autonomic nervous system
KW - Heart failure
KW - Idiopathic dilated cardiomyopathy
KW - Ischemic heart disease
KW - Sympatho-vagal balance
UR - http://www.scopus.com/inward/record.url?scp=0035103893&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035103893&partnerID=8YFLogxK
U2 - 10.1016/S1388-9842(00)00139-2
DO - 10.1016/S1388-9842(00)00139-2
M3 - Article
C2 - 11246057
AN - SCOPUS:0035103893
VL - 3
SP - 197
EP - 202
JO - European Journal of Heart Failure
JF - European Journal of Heart Failure
SN - 1388-9842
IS - 2
ER -