scholarly journals Lack of association between heart period variability asymmetry and respiratory sinus arrhythmia in healthy and chronic heart failure individuals

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247145
Author(s):  
Beatrice De Maria ◽  
Laura Adelaide Dalla Vecchia ◽  
Roberto Maestri ◽  
Gian Domenico Pinna ◽  
Monica Parati ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Respiratory Sinus Arrhythmia ◽  
Nyha Class ◽  
Respiratory Pattern ◽  
Heart Period ◽  
Middle Aged ◽  
Experimental Conditions ◽  
Sinus Arrhythmia ◽  
The Impact

Temporal asymmetry is a peculiar aspect of heart period (HP) variability (HPV). HPV asymmetry (HPVA) is reduced with aging and pathology, but its origin is not fully elucidated. Given the impact of respiration on HPV resulting in the respiratory sinus arrhythmia (RSA) and the asymmetric shape of the respiratory pattern, a possible link between HPVA and RSA might be expected. In this study we tested the hypothesis that HPVA is significantly associated with RSA and asymmetry of the respiratory rhythm. We studied 42 middle-aged healthy (H) subjects, and 56 chronic heart failure (CHF) patients of whom 26 assigned to the New York Heart Association (NYHA) class II (CHF-II) and 30 to NYHA class III (CHF-III). Electrocardiogram and lung volume were monitored for 8 minutes during spontaneous breathing (SB) and controlled breathing (CB) at 15 breaths/minute. The ratio of inspiratory (INSP) to expiratory (EXP) phases, namely the I/E ratio, and RSA were calculated. HPVA was estimated as the percentage of negative HP variations, traditionally measured via the Porta’s index (PI). Departures of PI from 50% indicated HPVA and its significance was tested via surrogate data. We found that RSA increased during CB and I/E ratio was smaller than 1 in all groups and experimental conditions. In H subjects the PI was about 50% during SB and it increased significantly during CB. In both CHF-II and CHF-III groups the PI was about 50% during SB and remained unmodified during CB. The PI was uncorrelated with RSA and I/E ratio regardless of the experimental condition and group. Pooling together data of different experimental conditions did not affect conclusions. Therefore, we conclude that the HPVA cannot be explained by RSA and/or I/E ratio, thus representing a peculiar feature of the cardiac control that can be aroused in middle-aged H individuals via CB.

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.

Limitations of sexual activity in patients with chronic heart failure

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
S Barquinha ◽  
J.A Alves ◽  
C.F Franco ◽  
M.T Trindade ◽  
T.P.S Silva ◽  
...  
Keyword(s):  
Heart Failure ◽  
Erectile Dysfunction ◽  
Chronic Heart Failure ◽  
Sexual Activity ◽  
Nyha Class ◽  
Left Ventricular ◽  
Peak Oxygen Consumption ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
The Impact

Abstract Background Limitation of sexual activity may potentially have a great impact in the quality of life of patients with chronic heart failure (HF), although the burden of sexual limitation and its clinical drivers are not completely understood. We aimed to characterize the impact of sexual limitation and how it relates to different measures of HF severity, in patients with HF. Methods We prospectively selected a cohort of patients followed in our ambulatory HF Clinics, with HF and currently or previously documented left ventricular ejection fraction (LVEF) ≤40%, aged between 18 and 80 years, with NYHA class I-IV. Clinical, laboratorial, imaging and ergometric data was collected. A questionnaire characterizing sexual activity of the patient was filled by her/himself before consultation with the physician, while alone in a private room. Results A total of 65 patients were selected, 75% of which were male, with mean age 61±11 years, 32% were in NYHA I or II, and 21% had a resynchronization system. Mean BNP was 520±850 pg/mL, LVEF was 39±12% and peak oxygen consumption (pVO2) was 17.2±5.3 mL/min/m2. Limitations of sexual activity were reported in 40 (62%) patients, including erectile dysfunction (25%), fatigue (11%), reduction of libidum (8%), fear of HF symptoms during sexual activity (5%), absence of sexual partner (5%), and other reasons (8%). Of these 40 patients, 22 (55%) reported severe or very severe sexual limitation. Only 2 (3%) patients actively searched for clinical aid. Patients with sexual limitations were older (63±12 vs 56±11 years), were in higher NYHA classes (One-Way ANNOVA), had higher levels of BNP (775±1051 vs 181±212 pg/mL) and lower glomerular filtration rates (66±19 vs 86±23 mL/min) (all p<0.05). Other major variables such as ischemic etiology, diabetes, resynchronization therapy, LVEF and pVO2 were not associated with the presence or severity of sexual limitations, although there was a numerical trend for lower pVO2 (16.5±5.8 vs 19.0±4.0 mL/l/min/m2, p=0.20). NYHA class ≥II (β 6.5, 95% CI 0.4–10.5) and BNP levels (β 1.03, 95% CI 1.01–1.06) were independent predictors of sexual dysfunction. Conclusions Sexual limitation was highly prevalent among patients with HF, was often severe and the most frequent reason was erectile dysfunction. Simple and highly accessible parameters, such as age, NYHA class, BNP levels and renal function, are related to the presence of sexual limitation. More attention should be payed to sexual limitation in patients with HF considering the high burden and the large room for improvement. Funding Acknowledgement Type of funding source: None

Association between self-care and prognosis in 1123 patients with chronic heart failure

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
E Calero ◽  
E Hidalgo ◽  
R Marin ◽  
L Rosenfeld ◽  
I Fernandez ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Acute Heart Failure ◽  
Nyha Class ◽  
Self Care ◽  
P Value ◽  
Funding Source ◽  
Class Iii ◽  
Cox Models ◽  
Lower Tertile

Abstract Background Self-care is a crucial factor in the education of patients with heart failure (HF) and directly impacts in the progression of the disease. However, little is published about its major clinical implications as admission or mortality in patients with HF. Aims and methods The aim of the study was to analyze time to admission due to acute heart failure and mortality associated with poor self-care in patients with chronic HF. We prospectively recruited consecutive patients with stable chronic HF referred to a nurse-led HF programme. Selfcare was evaluated at baseline with the 9 item European Heart Failure Self-Care Behavior Scale. Scores were standardized and reversed from 0 (worst selfcare) to 100 (better self care). For the purpose of this study we analyzed the associations of worse self-care (defined as scores below the lower tertile of the scale) with demographic, disease-related (clinical) and psychosocial factors in all patients at baseline. Results We included 1123 patients, mean age 72±11, 639 (60%) were male, mean LVEF 45±17 and 454 (40,4%) were in NYHA class III or IV. Mean score of the 9-item ESCBE was 69±28. Score below 55 (lower tertile) defined impaired selfcare behaviour. Those patients with worse self-care had more ischaemic heart disease, more COPD, and they achieved less distance in the 6 minute walking test. Regarding psychosocial items patients in lower tertile of self-care needed a caregiver more frequently, they present more cognitive impairment, depressive symptoms and worse score in terms of health self-perception. Multivariate Cox Models showed that a score below 55 points in 9-item ESCBE was independently associated with higher readmission due to acute heart failure [HR 1.26 (1.02–1.57), p value=0.034] and with mortality [HR 1.24 CI95% (1.02–1.50), p value=0.028] Conclusion Poor self-care measured with the modified 9-item ESCBE was associated with higher risk of admission due to acute decompensation and higher risk of mortality in patients with chronic heart failure. These results highlight the importance of assessing self-care and provide measures to improve them. Funding Acknowledgement Type of funding source: Public hospital(s). Main funding source(s): Hospital Univesitario de Bellvitge

Abstract 3143: Reverse Hemodynamic Remodelling May Be Possible Over Time

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Lynne W Stevenson ◽  
Yong K Cho ◽  
J. T Heywood ◽  
Robert C Bourge ◽  
William T Abraham ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Pulmonary Artery ◽  
Right Ventricular ◽  
Nyha Class ◽  
Systolic Pressure ◽  
Filling Pressure ◽  
Class Iii ◽  
One Year ◽  
Over Time

Introduction : Elevated filling pressures are a hallmark of chronic heart failure. They can be reduced acutely during HF hospitalization but the hemodynamic impact of ongoing therapy to maintain optivolemia has not been established. Methods and Results : After recent HF hospitalization, 274 NYHA Class III or IV HF patients were enrolled in the COMPASS-HF study at 28 experienced HF centers and received intense HF management (average 24.7 staff contacts/ 6 months) ± access to filling pressure information to adjust diuretics to maintain optivolemia, usually defined as estimated pulmonary artery diastolic (PAD) pressure of 12±4 mmHg. Filling pressure information was available for half the patients during the first 6 months (the Chronicle group, <Access), and for all patients during the next 6 months. Diuretics were adjusted 12.7 times per patient in the Chronicle group and 8.2 times per patient in the Control (-Access) group during the first 6 months (p = 0.0001). Compared to baseline, decreases in RV systolic pressure (RVSP) and ePAD were significant for the +Access patients by one year (p=0.0012 and p =.04, respectively). The Control patients exhibited a similar trend 6 months after crossing to +Access (figure ). Conclusions: Targeted therapeutic adjustments, based on continuous filling pressures along with intensification of HF management contacts, are associated with a reduction in chronic left-sided filling pressures and right ventricular load.

scholarly journals TREATMENT OF CHRONIC HEART FAILURE IN MIDDLE-AGED MEN WITH DEPRESSION

2019 ◽  
pp. 48-54
Author(s):  
Khabibullo Suvonovich Sultonov ◽  
◽  
Khursand Yodgorovna Sharipova ◽  
Gulnora Mansurovna Negmatova ◽  
Akhmad Akhadovich Sherbadalov ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Middle Aged
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