An Oscillation of the Respiratory Control System Accounts for Most of the Heart Period Variability of Chronic Heart Failure Patients

1996 ◽  
Vol 91 (s1) ◽  
pp. 89-91 ◽  
Author(s):  
Gian Domenico Pinna ◽  
Roberto Maestri ◽  
Maria Teresa La Rovere ◽  
Andrea Mortara
Keyword(s):  
Heart Failure ◽  
Control System ◽  
Chronic Heart Failure ◽  
Respiratory Control ◽  
Heart Period ◽  
Heart Failure Patients ◽  
Heart Period Variability ◽  
Period Variability

scholarly journals Paced Breathing Increases the Redundancy of Cardiorespiratory Control in Healthy Individuals and Chronic Heart Failure Patients

Entropy ◽  
2018 ◽  
Vol 20 (12) ◽  
pp. 949 ◽  
Author(s):  
Alberto Porta ◽  
Roberto Maestri ◽  
Vlasta Bari ◽  
Beatrice De Maria ◽  
Beatrice Cairo ◽  
...  
Keyword(s):  
Heart Failure ◽  
Fault Tolerance ◽  
Chronic Heart Failure ◽  
Partial Information ◽  
Heart Period ◽  
Sinus Arrhythmia ◽  
Cardiorespiratory Control ◽  
Decomposition Approach ◽  
Heart Failure Patients ◽  
Young Subjects

Synergy and redundancy are concepts that suggest, respectively, adaptability and fault tolerance of systems with complex behavior. This study computes redundancy/synergy in bivariate systems formed by a target X and a driver Y according to the predictive information decomposition approach and partial information decomposition framework based on the minimal mutual information principle. The two approaches assess the redundancy/synergy of past of X and Y in reducing the uncertainty of the current state of X. The methods were applied to evaluate the interactions between heart and respiration in healthy young subjects (n = 19) during controlled breathing at 10, 15 and 20 breaths/minute and in two groups of chronic heart failure patients during paced respiration at 6 (n = 9) and 15 (n = 20) breaths/minutes from spontaneous beat-to-beat fluctuations of heart period and respiratory signal. Both methods suggested that slowing respiratory rate below the spontaneous frequency increases redundancy of cardiorespiratory control in both healthy and pathological groups, thus possibly improving fault tolerance of the cardiorespiratory control. The two methods provide markers complementary to respiratory sinus arrhythmia and the strength of the linear coupling between heart period variability and respiration in describing the physiology of the cardiorespiratory reflex suitable to be exploited in various pathophysiological settings.

scholarly journals Subnormal heart period variability in heart failure: Effect of cardiac transplantation

1989 ◽  
Vol 14 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Michael L. Smith ◽  
Kenneth A. Ellenbogen ◽  
Dwain L. Eckberg ◽  
Szabolcs Szentpetery ◽  
Marc D. Thames
Keyword(s):  
Heart Failure ◽  
Cardiac Transplantation ◽  
Heart Period ◽  
Heart Period Variability ◽  
Period Variability

41 Circulating indices of collagen turnover during treatment of acute decompensation in chronic heart failure patients

2006 ◽  
Vol 5 (1) ◽  
pp. 3-3
Author(s):  
D TZIAKAS ◽  
G CHALIKIAS ◽  
D STAKOS ◽  
S CHATZIKYRIAKOU ◽  
I TENTES ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Collagen Turnover ◽  
Heart Failure Patients ◽  
Acute Decompensation
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