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Titolo:
Effects of posture on cardiac autonomic nervous activity in patients with congestive heart failure
Autore:
Miyamoto, S; Fujita, M; Sekiguchi, H; Okano, Y; Nagaya, N; Ueda, K; Tamaki, S; Nohara, R; Eiho, S; Sasayama, S;
Indirizzi:
Takeda Hosp, Div Cardiol, Kyoto, Japan Takeda Hosp Kyoto JapanTakeda Hosp, Div Cardiol, Kyoto, Japan Kyoto Univ, Coll Med Technol, Kyoto 606, Japan Kyoto Univ Kyoto Japan 606 yoto Univ, Coll Med Technol, Kyoto 606, Japan Kyoto Univ, Grad Sch Informat, Dept Syst Sci, Kyoto, Japan Kyoto Univ Kyoto Japan , Grad Sch Informat, Dept Syst Sci, Kyoto, Japan Kyoto Univ Hosp, Kyoto 606, Japan Kyoto Univ Hosp Kyoto Japan 606Kyoto Univ Hosp, Kyoto 606, Japan Natl Cardiovasc Ctr, Div Cardiol, Osaka, Japan Natl Cardiovasc Ctr OsakaJapan rdiovasc Ctr, Div Cardiol, Osaka, Japan Kyoto Univ, Grad Sch Med, Dept Cardiovasc Med, Kyoto, Japan Kyoto Univ Kyoto Japan Grad Sch Med, Dept Cardiovasc Med, Kyoto, Japan
Titolo Testata:
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
fascicolo: 7, volume: 37, anno: 2001,
pagine: 1788 - 1793
SICI:
0735-1097(20010601)37:7<1788:EOPOCA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORONARY-ARTERY DISEASE; RATE-VARIABILITY; SPECTRAL-ANALYSIS; PRESSURE; SECONDARY; PROGNOSIS; PERIOD; VAGAL; BEAT; TONE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Fujita, M Takeda Hosp, Div Cardiol, Kyoto, Japan Takeda Hosp Kyoto Japan akeda Hosp, Div Cardiol, Kyoto, Japan
Citazione:
S. Miyamoto et al., "Effects of posture on cardiac autonomic nervous activity in patients with congestive heart failure", J AM COL C, 37(7), 2001, pp. 1788-1793

Abstract

OBJECTIVES We aimed to clarify which recumbent position is preferred by patients with congestive heart failure (CHF) and to evaluate whether cardiac autonomic nervous activity is different among three recumbent positions (supine, left lateral decubitus, right lateral decubitus) in patients with CHF. BACKGROUND It remains unclear whether cardiac autonomic nervous activity is different among three recumbent positions in patients with CHF. METHODS We studied 17 male CHF patients (66 +/- 7 years) and 17 age- and gender-matched healthy subjects (66 +/- 7 years). Each subject underwent 24-h ambulatory electrocardiographic monitoring. A channel was used to record the CM, lead, and another to record the signal of the patient's posture with use of a newly developed small-sized detector (3.2 cm x 3.2 cm). By usingspectral analysis of heart rate variability, frequency-domain measures were calculated and compared among the three recumbent positions. Normalized high-frequency (HF: 0.15 to 0.40 Hz) power was used as an index of vagal activity and the low frequency (0.04 to 0.15 Hz)/HF power ratio was used as anindex of sympathovagal balance. RESULTS In patients with CHF, the time for the right lateral decubitus position was two-fold longer than that for the supine and left lateral decubitus positions. The increased cardiac sympathetic activity and decreased vagal tone in CHF patients were normalized in the right lateral decubitus position. CONCLUSIONS The right lateral decubitus position in patients with CHF may be a self-protecting mechanism of attenuating the imbalance of cardiac autonomic nervous activity. (J Am Coll Cardiol 2001;37:1788-93) (C) 2001 by theAmerican College of Cardiology.

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Documento generato il 04/04/20 alle ore 01:23:31