Heart failure with preserved vs reduced ejection fraction following cardiac rehabilitation: impact of endothelial function

2018 ◽  
Vol 33 (8) ◽  
pp. 886-892 ◽  
Author(s):  
Seiya Tanaka ◽  
Yoshihito Sanuki ◽  
Kiyoshi Ozumi ◽  
Takashi Harada ◽  
Hiromi Tasaki
Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Catherine F Notarius ◽  
Daniel A Keir ◽  
Mark B Badrov ◽  
Philip J Millar ◽  
Paul Oh ◽  
...  

Introduction: Elevated muscle sympathetic nerve activity (MSNA) both at rest and during dynamic cycling relates inversely to peak oxygen uptake (VO 2peak ) in patients with heart failure due to a reduced ejection fraction (HFrEF). We observed a drop in MSNA both rest (-6±2 bursts/min) and mild exercise (-4±2) in HFrEF patients after 6 months of cardiac rehabilitation. Hypothesis: We hypothesized that after training those HFrEF patients with LOW VO2peak (less than median 74% of age predicted) would have a larger decrease in MSNA during dynamic exercise than those with HIGH VO2peak (over 74%). Methods: In 21 optimally treated HFrEF patients (5 Female) (13 HIGH: mean VO 2peak =26 ml·kg/min; 98% of predicted; 8 LOW VO 2peak =12; 50%) we assessed VO 2peak (open-circuit spirometry), heart rate variability (HRV) and fibular MSNA (microneurography) at rest, during 1-leg cycling (2 min each of mild and moderate intensity upright 1-leg cycling, n=19) and recovery before and after 6 months of exercise training (45 min aerobic exercise, 5 days/ wk at 60-70 % of VO 2peak; and resistance training 2 days/wk). Results: HIGH and LOW groups had similar age (63±3 vs 63±4 years) , LVEF (30±2 vs 28±3%), BMI, resting heart rate (HR), blood pressure and MSNA (52±3 vs 50±3 bursts/min). Training increased VO 2peak in both groups (main effect P=0.009), with no group difference in HR response or ratings of perceived exertion. MSNA at rest tended to decrease after training in the HIGH but not LOW group (interaction P=0.08). MSNA during cycling increased in both HIGH (P=0.04) and LOW (P<0.001) groups but was blunted post-training in the HIGH group only (P=0.04 vs. 0.90 in LOW). Training-induced sympatho-inhibition during exercise recovery occurred in the HIGH but not LOW group (interaction P=0.01). In contrast, HRV was not improved by training in either group. Conclusions: Contrary to our hypothesis, the sympatho-inhibitory effect of 6 months of exercise-based cardiac rehabilitation favours HFrEF patients with an already normal VO 2peak . This suggests that increasing initially low VO 2peak may be insufficient to trigger beneficial exercise and recovery autonomic modulation and altered training paradigms may be required in such patients. Funded by Canadian Institutes for Health Research (CIHR)


Hypertension ◽  
2020 ◽  
Vol 76 (Suppl_1) ◽  
Author(s):  
Sangeetha D Nathaniel ◽  
Shane McGinty ◽  
David G Edwards ◽  
William B Farquhar ◽  
Melissa A Witman ◽  
...  

The mechanisms for the benefits of Angiotensin Receptor Neprilysin inhibitor (ARNi) in heart failure patients with reduced ejection fraction (HFrEF) are likely beyond blood pressure (BP) reduction. Vascular function, a prognostic marker in HFrEF, improves with ARNi in animal models. Improvements in vascular function may contribute to benefits from ARNi in HFrEF; however, this has yet to be demonstrated in humans. The purpose of the study was to test the hypothesis that arterial stiffness and endothelial function would improve after 12 weeks of ARNi in HFrEF. Methods: HFrEF participants with NYHA class II-III were enrolled from local cardiology clinics and completed experimental visits at baseline and 12 weeks later: 13 participants were prescribed ARNi by their cardiologist [62±10 years, Men: 10, BMI: 30±5 kg/m 2 , EF: 28±6 %; Non-ischemic cardiomyopathy (NICM): 8], 10 participants continued on conventional treatment [CON: 60±7 years, Men: 6, BMI: 31±6 kg/m 2 , EF: 31±5 % and NICM: 4; all P=NS]. During each experimental visit, arterial stiffness was assessed via carotid-femoral pulse wave velocity (PWV; Sphygmocor PVx system) and endothelial function by brachial artery flow-mediated dilation (FMD) using standard techniques. Statistical analyses were performed using 2x2 repeated-measures ANOVA. Results: Baseline mean BP (MAP) was similar between ARNi (93±14 mmHg) and CON (85 ± 10 mmHg; P=0.13); MAP tended to decrease after 12 weeks of ARNi (88 ± 11 mmHg; P=0.08) but not CON (90 ± 17 mmHg; P=0.14) (ANOVA interaction P=0.03). PWV tended to be higher at baseline in ARNi (8.8 ± 2.5 m/s) compared to CON (7.0 ± 2.5 m/s; P=0.09); PWV decreased after 12 weeks of ARNi (7.0 ± 1.7 m/s; P<0.01) and was unchanged in CON (7.4 ± 2.4 m/s; P=0.33) (ANOVA interaction P<0.01). When controlling for MAP, the effect of ARNi on PWV remained (P<0.01). At baseline, FMD was similar between ARNi (2.81 ± 2.05%) and CON (4.75 ± 3.75%; P=0.13); however, FMD increased after 12 weeks of ARNi (5.73 ± 1.87%; P<0.001) but not in CON (5.37 ± 3.38%; P=0.33) (ANOVA time P<0.001, interaction P=0.01). Conclusion: ARNi improves arterial stiffness and endothelial function in HFrEF. Understanding the mechanisms of ARNi in HFrEF is crucial as it may pave the way for better interventions in other cardiovascular diseases.


2021 ◽  
Vol 10 (24) ◽  
pp. 5980
Author(s):  
Shinji Kishimoto ◽  
Tatsuya Maruhashi ◽  
Masato Kajikawa ◽  
Takahiro Harada ◽  
Takayuki Yamaji ◽  
...  

The purpose of this study was to evaluate whether heart failure with mildly reduced ejection fraction (HFmrEF) is associated with vascular dysfunction and whether vascular function predicts future deterioration of LVEF in patients with HFmrEF. We evaluated endothelial function assessed by flow-mediated vasodilation (FMD) and vascular smooth muscle function assessed by nitroglycerine-induced vasodilation (NID) in 69 patients with HFmrEF and 426 patients without HF and evaluated the future deterioration of LVEF, defined as a decrease in LVEF to <40%, in 39 patients with HFmrEF for up to 3 years. Both FMD and NID were significantly lower in patients with HFmrEF than in patients without HF. We categorized patients into two groups based on low tertiles of NID: a low group (NID of <7.0%) and an intermediate and high group (NID of ≥7.0%). There were significant differences between the Kaplan–Meier curves for the deterioration of LVEF in the two groups (p < 0.01). Multivariate Cox proportional hazard analysis revealed that NID of <7.0% was an independent predictor of future deterioration of LVEF in patients with HFmrEF. Both endothelial function and vascular smooth muscle function are impaired in patients with HFmrEF compared with those in patients without HF. In addition, low NID of <7.0% predicts future deterioration of LVEF.


2018 ◽  
Vol 26 (3) ◽  
pp. 262-272 ◽  
Author(s):  
Hasnain M Dalal ◽  
Rod S Taylor ◽  
Kate Jolly ◽  
Russell C Davis ◽  
Patrick Doherty ◽  
...  

Background Cardiac rehabilitation improves health-related quality of life (HRQoL) and reduces hospitalizations in patients with heart failure, but international uptake of cardiac rehabilitation for heart failure remains low. Design and methods The aim of this multicentre randomized trial was to compare the REACH-HF (Rehabilitation EnAblement in CHronicHeart Failure) intervention, a facilitated self-care and home-based cardiac rehabilitation programme to usual care for adults with heart failure with reduced ejection fraction (HFrEF). The study primary hypothesis was that the addition of the REACH-HF intervention to usual care would improve disease-specific HRQoL (Minnesota Living with Heart Failure questionnaire (MLHFQ)) at 12 months compared with usual care alone. Results The study recruited 216 participants, predominantly men (78%), with an average age of 70 years and mean left ventricular ejection fraction of 34%. Overall, 185 (86%) participants provided data for the primary outcome. At 12 months, there was a significant and clinically meaningful between-group difference in the MLHFQ score of –5.7 points (95% confidence interval –10.6 to –0.7) in favour of the REACH-HF intervention group ( p = 0.025). With the exception of patient self-care ( p < 0.001) there was no significant difference in other secondary outcomes, including clinical events ( p > 0.05) at follow-up compared with usual care. The mean cost of the REACH-HF intervention was £418 per participant. Conclusions The novel REACH-HF home-based facilitated intervention for HFrEF was clinically superior in disease-specific HRQoL at 12 months and offers an affordable alternative to traditional centre-based programmes to address current low cardiac rehabilitation uptake rates for heart failure.


QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Abdelrahim Saad Chahat ◽  
Khaled Mohamed Said ◽  
Yasser Alaa Eldin ◽  
Mahmoud Mohamed Elsayed Zahran

Abstract Background Heart failure (HF) is a growing chronic health condition affecting more than 20 million people worldwide. Symptoms of depression are a common co-morbidity affecting as many as 42% of patients with heart failure (HF), and are associated with a poor quality of life and adverse prognosis. Symptoms of depression have negative impacts not only on daily social and domestic activities, but also on hospitalization and mortality rates in HF patients. cardiac rehabilitation has been shown to reduce the rate of mortality, improve functional capacity, and control reduced depressive symptoms and better clinical outcomes. Objective to investigate the impact of a 12-week completed cardiac rehabilitation program on depressive symptoms in patients with heart failure with reduced ejection fraction. Patients and Methods in this prospective non-randomized study, sixty patients with stable heart failure with reduced ejection fraction with mild, moderate and sever depressive symptoms were recruited between January 2018 to June 2019 at Ain Shams University hospitals and divided into two groups Study group(n = 30); participated in 12-week cardiac rehabilitation program Control group did not participate in cardiac rehabilitation program. Cardiac rehabilitation program consisted of education, diet control, drug adherence, 12 weeks exercise sessions, Behaviors and psychosocial management, Sexual activity education Smoking cessation. All patients personally interviewed for assessment of depression and quality of life before and after study period by Beck's depression inventory –II(BDI-II) and Minnesota living with heart failure questionnaire" (MLHFQ),respectively. Also all of them underwent to echo assessment before and after study period. Result A total of 60 patients in study group were enrolled, 26 (86.7) males in both groups. there were 22 (73.3%) patients (13 with mild depressive symptoms, 5 with moderate and 4 with sever depressive symptoms) showed significant improvement in BDI-II score (P &lt; 0.001), whereas 8 (26.7%) patients only did not improve significantly after exercise period, no one of the study group had been show worsening of his depressive symptoms after completed cardiac rehabilitation program. BDI-II score has significant positive correlation with MLHFQ score (r = 0.748, P &lt; 0.001). In contrast, only 4 (13.3%) patients (all of them were having mild depressive symptoms) of control group improved significantly regarding depressive symptoms (P &lt; 0.001), and the majority of participants 16 (53.3%) patients deteriorated regarding depressive symptoms, and the rest of group 10 (33.3%) patients didn’t show significant improvement of their depressive symptoms according to BDI-II score after study period (that was 3 months). There was a significant difference when compared BDI-II score at baseline with score after study period for CR group. The BDI-II score difference after study period also was significant between two groups (P &lt; 0.001). Conclusion in conclusion, the results of this prospective, non-randomized study demonstrate that completed CR program improves depressive symptoms, quality of life and LVEF in patients with heart failure with reduced ejection fraction. Recommendation cardiac rehabilitation should be implemented in routine management of patients with heart failure to improve psychological and physical complication of HF.


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