Abstract 11556: Association of Sleep Disordered Breathing and ECG R-Wave to Radial Artery Pulse Delay: The MESA Study

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Younghoon Kwon ◽  
David R Jacobs ◽  
Pamela L Lutsey ◽  
Peter Hannan ◽  
Julio A Chirinos ◽  
...  
Keyword(s):  
Arterial Stiffness ◽  
Radial Artery ◽  
Sleep Disordered Breathing ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Apnea Hypopnea Index ◽  
Sleep Study ◽  
Ventricular Ejection Fraction ◽  
Pulse Delay ◽  
Disordered Breathing

Background: Arterial stiffness is a well-recognized predictor of cardiovascular disease (CVD). ECG R-wave to Radial artery pulse delay (RRD) is a novel hemodynamic index in which arterial stiffness is an important component (shorter delay = Higher arterial stiffness) and is obtainable from a single tonometric measurement at the radial artery with simultaneous ECG. Sleep disordered breathing (SDB) has emerged as a risk factor for CVD. The aim of the study was to determine the association of SDB with RRD. Methods: Multi-Ethnic Study of Atherosclerosis participants in 2010-2012 without overt CVD who underwent a sleep study, radial artery tonometry and cardiac MRI were eligible for this cross-sectional analysis (N = 1173, Mean [SD] age: 67.8 ± 8.8, Women: 55.4%). Independent associations between SDB indices including apnea hypopnea index (AHI) and oxygen (O2) desaturation index (ODI: events with more than 4% O2 desaturation), and RRD (transit time in msec) were examined. Model was constructed to adjust for isovolumetric contraction time, another component of RRD, by including measures of contractility and preload (left ventricular ejection fraction (LVEF) and left ventricular end diastolic volume (LVEDV) respectively). Results: Median [IQR] of AHI and ODI were 7.9/hr [2.9- 18.0] and 7.5/hr [3.0- 17.5] respectively. Adjusting for transit path length, demographic factors, BMI and CVD risk factors, both AHI and ODI were inversely associated with RRD (β= -50.3 msec per SD, p = 0.09 and β= -0.60.2 msec per SD, p = 0.04 respectively). In gender stratified analyses given presence of significant interaction, measures of SDB were predictive of RRD only in men. No significant associations were found with key nocturnal hypoxemia indices including mean O2 saturation (SpO2), percent time with SpO2less than 90 % and minimum SpO2. Men, older age, Asian race, high blood pressure, LVEF and LVEDV were also inversely associated with RRD. Conclusion: SDB was associated with shorter RRD implying higher arterial stiffness in men only. These findings suggest the importance of apnea related dynamic change in SpO2 (intermittent hypoxia and reoxygenation) in its potential link to arterial stiffness and also highlights effect modification by gender in the association between the two.

scholarly journals Evaluation of the Apnea-Hypopnea Index Determined by Adaptive Servo-Ventilation Devices in Patients With Heart Failure and Sleep-Disordered Breathing

2021 ◽  
Vol 8 ◽  
Author(s):  
Satomi Imanari ◽  
Yasuhiro Tomita ◽  
Satoshi Kasagi ◽  
Fusae Kawana ◽  
Yuka Kimura ◽  
...  
Keyword(s):  
Heart Failure ◽  
Sleep Disordered Breathing ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Apnea Hypopnea Index ◽  
Adaptive Servo Ventilation ◽  
Respiratory Events ◽  
Patients With Heart Failure ◽  
Modest Correlation ◽  
Disordered Breathing

Introduction: Adaptive servo-ventilation (ASV) devices are designed to suppress central respiratory events, and therefore effective for sleep-disordered breathing (SDB) in patients with heart failure (HF) and provide information about their residual respiratory events. However, whether the apnea-hypopnea index (AHI), determined by the ASV device AutoSet CS (ASC), correlates with the AHI calculated by polysomnography (PSG) in patients with HF and SDB remains to be evaluated.Methods: Consecutive patients with SDB titrated on ASC were included in the study. We assessed the correlation between AHI determined by manual scoring during PSG (AHI-PSG) and that determined by the ASC device (AHI-ASC) during an overnight session.Results: Thirty patients with HF and SDB (age, 68.8 ± 15.4 years; two women; left ventricular ejection fraction, 53.8 ± 17.9%) were included. The median AHI in the diagnostic study was 28.4 events/h, including both obstructive and central respiratory events. During the titration, ASC markedly suppressed the respiratory events (AHI-PSG, 3.3 events/h), while the median AHI-ASC was 12.8 events/h. We identified a modest correlation between AHI-PSG and AHI-ASC (r = 0.36, p = 0.048). The Brand-Altman plot indicated that the ASC device overestimated the AHI, and a moderate agreement was observed with PSG.Conclusions: There was only a modest correlation between AHI-PSG and AHI-ASC. The discrepancy may be explained by either the central respiratory events that occur during wakefulness or the other differences between PSG and ASC in the detected respiratory events. Therefore, clinicians should consider this divergence when assessing residual respiratory events using ASC.

scholarly journals Implantable defibrillator-computed respiratory disturbance index predicts new-onset atrial fibrillation: the DASAP-HF study

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
G Boriani ◽  
E.C.L Pisano' ◽  
P Pieragnoli ◽  
A Locatelli ◽  
A Capucci ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Apnea Hypopnea Index ◽  
Respiratory Disturbance Index ◽  
Sleep Study ◽  
Ventricular Ejection Fraction ◽  
Disturbance Index ◽  
Respiratory Disturbance

Abstract Introduction Sleep apnea (SA), as measured by polysomnography, is a risk factor for atrial fibrillation (AF). The DASAP-HF study previously demonstrated that the Respiratory Disturbance Index (RDI) computed by an implantable cardioverter defibrillator (ICD) algorithm accurately identifies severe SA, is associated with cardiovascular events, and independently predicts death. Purpose In the present analysis we tested the hypothesis that device-detected RDI could also predict AF burden. Methods Patients with left ventricular ejection fraction ≤35% implanted with an ICD were enrolled and followed-up for 24 months. One month after implantation, patients underwent a polysomnographic study. The weekly average RDI value was considered, as calculated by the algorithm during the entire follow-up period and over a 1 week period preceding the sleep study, and patients were stratified according to an RDI value ≥ or <30 episodes/hour. The endpoints were: daily AF burden of ≥5 minutes, ≥6 hours, ≥23 hours. Results 164 enrolled patients had usable RDI values during the entire follow-up period. Severe SA (RDI≥30 episodes/h) was diagnosed in 92 (56%) patients at the time of the polysomnographic study. During a median follow-up of 25 months, AF burden ≥5 minutes/day was documented in 70 (43%), ≥6 hours/day in 48 (29%), and ≥23 hours/day in 33 (20%) patients. Device-detected RDI≥30 episodes/h at the time of the polysomnographic study, as well as the polysomnography-measured apnea hypopnea index ≥30 episodes/h, were not associated with the occurrence of the endpoints, using a Cox regression model. However, using time-dependent Cox model continuously measured weekly average RDI≥30episodes/h was independently associated with AF burden ≥5 minutes/day (HR: 2.13, 95% CI: 1.24–3.65, p=0.006), ≥6 hours/day (HR: 2.75, 95% CI: 1.37–5.49, p=0.004), and ≥23 hours/day (HR: 2.26, 95% CI: 1.05–4.86, p=0.037), after correction for history of AF, left atrial diameter, and gender. Conclusions In heart failure patients implanted with an ICD, device-diagnosed severe SA is associated with a higher risk of AF. In particular, severe SA on follow-up data review identifies patients who are from two- to three-fold more likely to experience an AF episode, according to various thresholds of daily AF burden. FUNDunding Acknowledgement Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): Promoted by the Italian Heart Rhythm Society (AIAC).Supported by a research grant from Boston Scientific.

scholarly journals Evaluation of arterial stiffness in systolic heart failure

2021 ◽  
Vol 67 (2) ◽  
pp. 86-89
Author(s):  
Lajos Fehérvári ◽  
István Adorján Szabó ◽  
Lóránd Kocsis ◽  
Attila Frigy
Keyword(s):  
Heart Failure ◽  
Arterial Stiffness ◽  
Statistical Significance ◽  
Systolic Heart Failure ◽  
Intima Media Thickness ◽  
Carotid Intima Media Thickness ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Chi Square ◽  
Ventricular Ejection Fraction

Abstract Objective: Micro- and macrovascular changes can occur in heart failure, and could influence its prognosis and management. In a prospective study, we proposed the evaluation of arterial stiffness (macrovascular function) and its correlations in patients with systolic heart failure. Methods: 40 patients (32 men, 8 women, mean age 63±2.9 years), with hemodynamically stable systolic heart failure (left ventricular ejection fraction, EF<40%) were enrolled in the study. In every patient, beyond routine explorations (ECG, cardiac and carotid ultrasound, laboratory measurements), arterial stiffness was assessed by measuring pulse wave velocity (PWV). The correlations of PWV with clinical and echo-cardiographic characteristics were studied using t-test and chi-square test (p<0.05 being considered for statistical significance). Results: The average PWV was 8.55±2.2 m/s, and 16 patients had increased PWV (>10 m/s). We found significantly higher PWV values in patients older than 65 years (p<0.001), in patients with eGFR <60 ml/min/1.73 m2 (p<0.001), hypertension (p=0.006), and increased (>1 mm) carotid intima-media thickness (p=0.016). PWV was found to be significantly lower when EF was <30% (p=0.049). Furthermore, the presence of an increased PWV was correlated significantly with age (p<0.001), and (with borderline significance) with eGFR <60 ml/min/1.73 m2 and, inversely, with EF<30%. Conclusions: Increased arterial stiffness reflected by high PWV is frequently present in patients with systolic heart failure, and is mainly correlated with general risk factors of arterial involvement. Low EF, due to low stroke volume and decreased systolic arterial wall tension can influence the values and the interpretation of PWV.

scholarly journals What is the remaining status of adaptive servo-ventilation? The results of a real-life multicenter study (OTRLASV-study)

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Dany Jaffuel ◽  
Carole Philippe ◽  
Claudio Rabec ◽  
Jean-Pierre Mallet ◽  
Marjolaine Georges ◽  
...  
Keyword(s):  
Sleep Apnea ◽  
Real Life ◽  
Group Versus ◽  
Central Sleep Apnea ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Apnea Hypopnea Index ◽  
Ventricular Ejection Fraction ◽  
Life Conditions ◽  
Obstructive Sleep

Abstract Backgrounds As a consequence of the increased mortality observed in the SERVE-HF study, many questions concerning the safety and rational use of ASV in other indications emerged. The aim of this study was to describe the clinical characteristics of ASV-treated patients in real-life conditions. Methods The OTRLASV-study is a prospective, 5-centre study including patients who underwent ASV-treatment for at least 1 year. Patients were consecutively included in the study during the annual visit imposed for ASV-reimbursement renewal. Results 177/214 patients were analysed (87.57% male) with a median (IQ25–75) age of 71 (65–77) years, an ASV-treatment duration of 2.88 (1.76–4.96) years, an ASV-usage of 6.52 (5.13–7.65) hours/day, and 54.8% were previously treated via continuous positive airway pressure (CPAP). The median Epworth Scale Score decreased from 10 (6–13.5) to 6 (3–9) (p < 0.001) with ASV-therapy, the apnea-hypopnea-index decreased from 50 (38–62)/h to a residual device index of 1.9 (0.7–3.8)/h (p < 0.001). The majority of patients were classified in a Central-Sleep-Apnea group (CSA; 59.3%), whereas the remaining are divided into an Obstructive-Sleep-Apnea group (OSA; 20.3%) and a Treatment-Emergent-Central-Sleep-Apnea group (TECSA; 20.3%). The Left Ventricular Ejection Fraction (LVEF) was > 45% in 92.7% of patients. Associated comorbidities/etiologies were cardiac in nature for 75.7% of patients (neurological for 12.4%, renal for 4.5%, opioid-treatment for 3.4%). 9.6% had idiopathic central-sleep-apnea. 6.2% of the patients were hospitalized the year preceding the study for cardiological reasons. In the 6 months preceding inclusion, night monitoring (i.e. polygraphy or oximetry during ASV usage) was performed in 34.4% of patients, 25.9% of whom required a subsequent setting change. According to multivariable, logistic regression, the variables that were independently associated with poor adherence (ASV-usage ≤4 h in duration) were TECSA group versus CSA group (p = 0.010), a higher Epworth score (p = 0.019) and lack of a night monitoring in the last 6 months (p < 0.05). Conclusions In real-life conditions, ASV-treatment is often associated with high cardiac comorbidities and high compliance. Future research should assess how regular night monitoring may optimize devices settings and patient management. Trial registration The OTRLASV study is registered on ClinicalTrials.gov (Identifier: NCT02429986) on 1 April 2015.

P5415Sleep disordered breathing in patients before and after heart transplantation: association with biomarkers and clinical parameters

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
E Medvedeva ◽  
L S Korostovtseva ◽  
M A Simonenko ◽  
Y V Sazonova ◽  
Y V Sviryaev
Keyword(s):  
Heart Failure ◽  
Sleep Apnea ◽  
Heart Transplantation ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Clinical Parameters ◽  
Ventricular Ejection Fraction ◽  
Obstructive Sleep ◽  
Before And After ◽  
Disordered Breathing

Abstract Background Sleep-disordered breathing (SDB) is highly frequent in patients with severe heart failure (HF). SDB, and predominantly central sleep apnea (CSA), may improve after recovery of cardiac function, but available data are limited and inconclusive, especially in patients who have undergone heart transplantation. The assessment of the severity of sleep apnea is mainly based on the apnea-hypopnea index (AHI), but this event-based parameter alone may not sufficiently reflect the complex pathophysiological mechanisms underlying SDB potentially contributing to adverse outcomes in patients with heart failure. Purpose To assess SDB in patients with severe HF before and after heart transplantation, their relationship with biomarkers and clinical parameters. Methods We included 117 patients (mean age 52.4±4.7 years) with HF NYHA class II-IV in the prospective cohort study, follow-up period was 5 years. The left ventricular ejection fraction (LVEF) was 28.05±9.57%. All patients underwent a comprehensive clinical examination, echocardiography, polysomnography (PSG, Embla N7000, Natus, USA). The plasma level of NT-proBNP, was analyzed by immunoassay (ELISA). The SPSS statistical software (version 23.0) was used. Results PSG showed the following types of SDB in the studied cohort: obstructive sleep apnoea (OSA) was diagnosed in 48 patients (41%), central - in 20 (17%), mixed - in 26 (22%). Among them mild SDB was diagnosed in 29 cases, moderate in 32 and severe in 33 patients. SDB was not found in 23 patients. The following correlations were identified: NT-proBNP and obstructive apnea index (OAI) (r=−0.44, p=0.007), NT-proBNP and sleep efficiency (r=−0.71, p=0.006), AHI and body mass index (BMI) (r=0.32, p=0.01), OAI and BMI index (r=0.34, p<0.001), desaturation index and BMI (r=0.43, p<0.001), average saturation oxygen and BMI (r=−0,6, p<0,001). Twenty-three patients underwent heart transplantation. According PSG-data 1 year after transplantation we observed decrease of central apnea index (CAI) (p=0,04). On the other hand, OAI increased (p=0,01) independently of the significant change in BMI (p=0,08). Conclusion We found very high rate of SDB (80%) in patients with severe HF, the predominant type was OSA. AHI, OAI and indicators of oxygen saturation correlate with BMI and biomarkers before heart transplantation. After 1 year after transplantation CAI decreased, assessment of the dynamics of obstructive sleep apnea requires further study.

scholarly journals The central arterial stiffness parameters in decompensated versus compensated states of heart failure: a paired comparative cohort study

2022 ◽  
Vol 74 (1) ◽  
Author(s):  
Ahmed El Fol ◽  
Waleed Ammar ◽  
Yasser Sharaf ◽  
Ghada Youssef
Keyword(s):  
Heart Failure ◽  
Arterial Stiffness ◽  
Ejection Fraction ◽  
Pulse Wave ◽  
Nyha Class ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Class Iii ◽  
Ventricular Ejection Fraction ◽  
Reduced Ejection Fraction

Abstract Background Arterial stiffness is strongly linked to the pathogenesis of heart failure and the development of acute decompensation in patients with stable chronic heart failure. This study aimed to compare arterial stiffness indices in patients with heart failure with reduced ejection fraction (HFrEF) during the acute decompensated state, and three months later after hospital discharge during the compensated state. Results One hundred patients with acute decompensated HFrEF (NYHA class III and IV) and left ventricular ejection fraction ≤ 35% were included in the study. During the initial and follow-up visits, all patients underwent full medical history taking, clinical examination, transthoracic echocardiography, and non-invasive pulse wave analysis by the Mobil-O-Graph 24-h device for measurement of arterial stiffness. The mean age was 51.6 ± 6.1 years and 80% of the participants were males. There was a significant reduction of the central arterial stiffness indices in patients with HFrEF during the compensated state compared to the decompensated state. During the decompensated state, patients presented with NYHA FC IV (n = 64) showed higher AI (24.5 ± 10.0 vs. 16.8 ± 8.6, p < 0.001) and pulse wave velocity (9.2 ± 1.3 vs. 8.5 ± 1.2, p = 0.021) than patients with NYHA FC III, and despite the relatively smaller number of females, they showed higher stiffness indices than males. Conclusions Central arterial stiffness indices in patients with HFrEF were significantly lower in the compensated state than in the decompensated state. Patients with NYHA FC IV and female patients showed higher stiffness indices in their decompensated state of heart failure.

scholarly journals The Relationship Between Cardio-Ankle Vascular Index and Left Atrial Phasic Function in Hypertensive Patients With Preserved Ejection Fraction

2021 ◽  
Vol 3 ◽  
Author(s):  
Tsuyoshi Tabata ◽  
Kazuhiro Shimizu ◽  
Yukihiro Morinaga ◽  
Naoaki Tanji ◽  
Ruiko Yoshida ◽  
...  
Keyword(s):  
Arterial Stiffness ◽  
Ejection Fraction ◽  
Left Atrial ◽  
Univariate Analysis ◽  
Left Ventricular ◽  
Volume Index ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Hypertensive Patients ◽  
The Relationship

Background: To investigate the relationship between arterial stiffness, reflected by cardio-ankle vascular index (CAVI) value, and left atrial (LA) phasic function in hypertensive patients with preserved left ventricular ejection fraction (LVEF).Methods: We retrospectively studied 165 consecutive patients (mean age, 66.5 ± 11.7 years) diagnosed with hypertension with preserved LVEF who had undergone CAVI measurement and echocardiography on the same day. The latter included speckle-tracking echocardiography to assess LA phasic function (reservoir, conduit, and pump strain) and left ventricular global longitudinal strain (LVGLS).Results: The results of univariate analysis showed CAVI value to be correlated with LA reservoir strain and LA conduit strain (r = −0.387 and −0.448, respectively; both P &lt; 0.0001). The results of multiple linear regression analysis showed CAVI value to be independently related to age (β = 0.241, P = 0.002) and LA conduit strain (β = −0.386, P = 0.021) but not LV mass index, LA volume index, or LV systolic function (including LVGLS).Conclusion: In hypertensive patients with preserved LVEF, increased CAVI value appears to be independently associated with impaired LA phasic function (particularly LA conduit function) before LA and LV remodeling. CAVI determination to assess arterial stiffness may be useful in the early detection of interactions between cardiovascular abnormalities in hypertensive patients.

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