Abstract 15864: Measured versus Estimated Resting Metabolic Rate in Heart Failure With Preserved Ejection Fraction

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Theresa Anderson ◽  
Thomas Cascino ◽  
Daniel Perry ◽  
Gillian Grafton ◽  
Todd M Koelling ◽  
...  
Keyword(s):  
Heart Failure ◽  
Weight Loss ◽  
Ejection Fraction ◽  
Metabolic Rate ◽  
Resting Metabolic Rate ◽  
World Health ◽  
Heart Catheterization ◽  
Preserved Ejection Fraction ◽  
Dietary Counseling ◽  
Metabolic Cart

Introduction: Obesity is common in heart failure with preserved ejection fraction (HFpEF) and dietary weight loss can improve functional capacity, but sarcopenia and frailty are also frequently present. Little evidence is available regarding resting metabolic rate (RMR) or how commonly used equations to estimate RMR compare to measured RMR in HFpEF. This information is vital for counseling patients on individual caloric needs. Hypothesis: Commonly used estimation equations do not accurately reflect measured RMR in patients with HFpEF. Methods: Resting metabolic rate (RMR) was measured with a metabolic cart for consecutive patients with HFpEF (EF ≥50%) referred for right heart catheterization at the University of Michigan from 2011-2015. Patients with congenital, infiltrative, hypertrophic, or restrictive cardiomyopathy were excluded. The RMR was calculated using the Weir formula: RMR= 1440*[3.94 VO 2 (l/min) + 1.11*VCO 2 (l/min)] kcal/day. Measured RMR and estimations of RMR using the Harris Benedict Equation (HBE), Mifflin-St Jeor Equation (MSJE), and World Health Organization (WHO) equation were compared using paired t-tests and Bland-Altman plots. Results: Patients (n=43) were aged (mean ± SD) 62 ± 11.6 years, 53% female, and BMI 34.9 ± 11. Mean measured RMR from Weir equation was 1514 ± 479 kcal/day. Estimated RMR by HBE was 1784 ± 530, MSJE was 1685 ± 457, and WHO equation was 1816.8 ± 485 kcal/day. All estimations significantly overestimated RMR when compared to the Weir method (>10% difference and p<0.01 for all; Figure A-C). The MSJE had the closest range of agreement to the measured RMR. Conclusions: Estimations of resting metabolic rate in patients with HFpEF demonstrated a fixed bias towards overestimation when compared to measured RMR by metabolic cart. Given HFpEF populations are often obese and are counseled routinely on weight loss, understanding the implicit bias of equations estimating RMR is vital when providing nutritional and dietary counseling.

scholarly journals Measured Versus Estimated Resting Metabolic Rate in Heart Failure With Preserved Ejection Fraction

2021 ◽  
Author(s):  
Theresa Anderson ◽  
Thomas M. Cascino ◽  
Todd M. Koelling ◽  
Daniel Perry ◽  
Gillian Grafton ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Metabolic Rate ◽  
World Health Organization ◽  
Resting Metabolic Rate ◽  
World Health ◽  
Preserved Ejection Fraction ◽  
Predictive Equations ◽  
Health Organization ◽  
Nutrition And Dietetics

Background: Obesity is common in heart failure with preserved ejection fraction (HFpEF), and a hypocaloric diet can improve functional capacity. Malnutrition, sarcopenia, and frailty are also frequently present, and calorie restriction could harm some patients. Resting metabolic rate (RMR) is an essential determinant of caloric needs; however, it is rarely measured in clinical practice. The accuracy of commonly used predictive equations in HFpEF is unknown. Methods: RMR was measured with indirect calorimetry in 43 patients with HFpEF undergoing right heart catheterization at the University of Michigan, and among 49 participants in the SECRET trial (Study of the Effects of Caloric Restriction and Exercise Training in Patients With Heart Failure and a Normal Ejection Fraction); SECRET patients also had dual-energy X-ray absorptiometry body composition measures. Measured RMR was compared with RMR estimated using the Harris Benedict, Mifflin-St Jeor, World Health Organization, and Academy for Nutrition and Dietetics equations. Results: All predictive equations overestimated RMR (by >10%, P <0.001 for all), with mean (95% CI) differences Harris Benedict equation +250 (186–313), Mifflin-St. Jeor equation +169 (110–229), World Health Organization equation +300 (239–361), and Academy for Nutrition and Dietetics equation +794 (890–697) kcal/day. Results were similar across both patient groups, and the discrepancy between measured and estimated RMR tended to increase with body mass index. In SECRET, measured RMR was closely associated with lean body mass (ρ=0.74; by linear regression adjusted for age and sex: β=27 [95% CI, 18–36] kcal/day per kg, P <0.001; r 2 =0.56). Conclusions: Commonly used predictive equations systematically overestimate measured RMR in patients with HFpEF. Direct measurement of RMR may be needed to effectively tailor dietary guidance in this population. REGISTRATION: URL: https://www.clinicaltrials.gov ; Unique Identifier: NCT00959660.

scholarly journals In Situ Expression of Bcl-2 in Pulmonary Artery Endothelial Cells Associates with Pulmonary Arterial Hypertension Relative to Heart Failure with Preserved Ejection Fraction

2016 ◽  
Vol 6 (4) ◽  
pp. 551-556 ◽  
Author(s):  
Raymond L. Benza ◽  
Gretchen Williams ◽  
Changgong Wu ◽  
Kelly J. Shields ◽  
Amresh Raina ◽  
...  
Keyword(s):  
Heart Failure ◽  
Endothelial Cells ◽  
Pulmonary Arterial Hypertension ◽  
Ejection Fraction ◽  
Pulmonary Artery ◽  
Arterial Hypertension ◽  
World Health ◽  
Heart Catheterization ◽  
Preserved Ejection Fraction ◽  
Pulmonary Arterial

We have previously reported that pulmonary artery endothelial cells (PAECs) can be harvested from the tips of discarded Swan-Ganz catheters after right heart catheterization (RHC). In this study, we tested the hypothesis that the existence of an antiapoptotic phenotype in PAECs obtained during RHC is a distinctive feature of pulmonary arterial hypertension (PAH; World Health Organization group 1) and might be used to differentiate PAH from other etiologies of pulmonary hypertension. Specifically, we developed a flow cytometry-based measure of Bcl-2 activity, referred to as the normalized endothelial Bcl-2 index (NEBI). We report that higher NEBI values are associated with PAH to the exclusion of heart failure with preserved ejection fraction (HFpEF) and that this simple diagnostic measurement is capable of differentiating PAH from HFpEF without presenting addition risk to the patient. If validated in a larger, multicenter study, the NEBI has the potential to assist physicians in the selection of appropriate therapeutic interventions in the common and dangerous scenario wherein patients present a clinical and hemodynamic phenotype that makes it difficult to confidently differentiate between PAH and HFpEF.

scholarly journals Weight loss early after discharge predicts the risk of rehospitalization in non-obese patients with heart failure preserved ejection fraction

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
K Kamisaka ◽  
K Kamiya ◽  
K Iwatsu ◽  
N Iritani ◽  
Y Iida ◽  
...  
Keyword(s):  
Heart Failure ◽  
Weight Loss ◽  
Regression Analysis ◽  
Ejection Fraction ◽  
Associated Factors ◽  
Clinical Characteristics ◽  
Obese Patients ◽  
Preserved Ejection Fraction ◽  
Kaplan Meier ◽  
Worse Prognosis

Abstract Background Weight loss (WL) has been considered as a prognostic factor in heart failure with reduced ejection fraction (HFrEF). However, the prognosis and associated factors of WL in heart failure with preserved ejection fraction (HFpEF) have remained unclear. Purpose This study aimed to examine the prevalence, prognosis, and clinical characteristics of worse prognosis based on the identified WL after discharge in HFpEF. Methods The study was conducted as a part of a multicenter cohort study (Flagship). The cohort study enrolled ambulatory HF who hospitalized due to acute HF or exacerbation of chronic HF. Patients with severe cognitive, psychological disorders or readmitted within 6-month after discharge were excluded in the study. WL was defined as ≥5% weight loss in 6-month after discharge and HFpEF was defined as left ventricular ejection fraction (LVEF) ≥50% at discharge. Age, gender, etiology, prior HF hospitalization, New York Heart Association (NYHA) class, brain natriuretic peptide (BNP) or N-terminal-proBNP (NT-proBNP), anemia (hemoglobin; male &lt;13g/dL, female &lt;12g/dL), serum albumin, Geriatric Depression Scale, hand grip strength and comorbidities were collected at discharge. Patients were stratified according to their body mass index (BMI) at discharge as non-obese (BMI &lt;25) or obese (BMI ≥25). We analyzed the association between WL and HF rehospitalization from 6 month to 2 years after discharge using Kaplan-Meier curve analysis and Cox regression analysis adjusted for age and gender, and clinical characteristics associated to worse prognosis in WL using logistic regression analysis adjusted for potential confounders in HFpEF. Results A total of 619 patients with HFpEF were included in the analysis. The prevalence of WL was 12.9% in 482 non-obese and 15.3% in 137 obese patients. During 2 years, 72 patients were readmitted for HF (non-obese: 48, obese: 24). WL in non-obese independently associated with poor prognosis (hazard ratio: 2.2: 95% confidence interval: 1.13–4.25) after adjustment for age and sex, while WL in obese patients did not. Logistic regression analysis chose age (odds ratio 1.02 per 1 year; 1.00–1.05), anemia (2.14; 1.32–3.48), and BNP ≥200pg/mL or NT-proBNP ≥900pg/mL (1.83; 1.18–2.86) as independent associated factors for worse prognosis of WL in non-obese patients. Conclusion In HFpEF, WL in early after discharge in non-obese elderly patients may be a prognostic indicator for HF rehospitalization. HF management including WL prevention along with controlling anemia is likely to improve prognosis in this population. Kaplan Meier survival curves Funding Acknowledgement Type of funding source: Public grant(s) – National budget only. Main funding source(s): A Grant-in-Aid for Scientific Research (A) from the Japan Society for the Promotion of Science

Abstract 13487: Impact of the New Definition of Pulmonary Hypertension in Heart Failure With Preserved Ejection Fraction

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Fusako Sera ◽  
Tomohito Ohtani ◽  
kei nakamoto ◽  
Shungo Hikoso ◽  
Daisaku Nakatani ◽  
...  
Keyword(s):  
Heart Failure ◽  
Pulmonary Hypertension ◽  
Ejection Fraction ◽  
Pulmonary Artery ◽  
Rank Test ◽  
Heart Catheterization ◽  
Preserved Ejection Fraction ◽  
Multicenter Observational Study ◽  
Definition Of ◽  
The Impact

Introduction: The proposed revision of hemodynamic definition of pulmonary hypertension (PH) adopts a lower threshold of mean pulmonary artery pressure (mPAP) > 20 mmHg. In addition, pulmonary vascular resistance (PVR) ≥ 3 Wood units (WU) is included as the definition of pre-capillary component of PH. Heart failure (HF) with preserved ejection fraction (HFpEF) can develop pre-capillary PH as well as post-capillary PH. We aimed to investigate the impact of the proposed definition of PH on clinical diagnosis of PH associated with HFpEF. Methods: From the PURSUIT-HFpEF (Prospective Multicenter Observational Study of Patients with Heart Failure with Preserved Ejection Fraction) registry, 225 patients who were hospitalized with HF and underwent right heart catheterization were categorized according to the current guidelines and the proposed definition of PH: non-PH, isolated post-capillary PH (Ipc-PH), pre-capillary PH, and combined pre- and post-capillary PH (Cpc-PH). In the proposed definition, patients with mPAP > 20 mmHg, PVR < 3 WU, and pulmonary artery wedge pressure ≤ 15 mmHg do not meet criteria for any of the above categories and are categorized as “unclassified PH”. Results: Prevalence of PH was significantly increased in the proposed definition compared to that in the current definition (51% vs 29%, p<0.0001), with a doubled frequency of pre-capillary PH (Fig A). Furthermore, 24 patients (11%) were diagnosed as unclassified PH and accounted for 22% of those with PH by the proposed definition. Among the PH categories in the proposed definition, Cpc-PH category was significantly relevant for worse prognosis at 1 year after discharge in patients with HFpEF (p=0.03 vs non-PH by log-rank test with Bonferroni's correction) (Fig 2). Conclusions: The new definition of PH resulted in a remarkable increase of prevalence of PH in HFpEF with a quite a few patients with unclassified PH and doubled frequency of pre-capillary PH.

Abstract 17168: Myocardial Natriuretic Peptide Expression in Heart Failure With Preserved Ejection Fraction

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Virginia S Hahn ◽  
Hildur Knutsdottir ◽  
Kenneth C Bedi ◽  
Kenneth B Margulies ◽  
Saptarsi M Haldar ◽  
...  
Keyword(s):  
Gene Expression ◽  
Heart Failure ◽  
Renal Function ◽  
Ejection Fraction ◽  
Systolic Pressure ◽  
Principal Component ◽  
Serum Levels ◽  
Right Heart Catheterization ◽  
Heart Catheterization ◽  
Preserved Ejection Fraction

Introduction: Serum natriuretic peptides (NP) are reduced in heart failure with preserved ejection fraction (HFpEF) compared to HFrEF; however, myocardial NP expression in HFpEF is unknown. We analyzed serum NTproBNP and myocardial RNAseq data to test the hypothesis that 1) lower myocardial NP expression in HFpEF drives the difference in serum levels, and 2) HFpEF with higher NP expression have transcriptomic signatures more similar to HFrEF. Methods: HFpEF patients (n=41) with clinical HF, LVEF≥50%, and meeting current consensus criteria for HFpEF underwent right heart catheterization and right ventricular (RV) endomyocardial biopsy. We performed differential gene expression analysis of RV septal tissue from HFpEF and compared to explanted HFrEF (n=30) and unused donor hearts (n=24, Control). Results: Myocardial NPPB expression was 5-fold higher in HFrEF vs Control (p<0.001) and unchanged in HFpEF vs Control, while NPPA expression was 9-fold higher in HFrEF and 5-fold higher in HFpEF vs Control (p<0.0001 for both comparisons). After adjustment for renal function and BMI, myocardial NPPB expression was significantly associated with serum NTproBNP in HFpEF (R 2 0.68; p<0.0001 for renal function, NPPB expression; p=0.03 for BMI). Pulmonary artery (PA) systolic pressure and PA wedge pressure correlated with myocardial NPPB expression (PASP R 2 0.45, p<0.0001; PAWP R 2 0.25, p=0.01), even after adjustment for comorbidities. HFpEF patients with high (≥ median NPPB expression in HFpEF) vs low NPPB expression had transcriptomic signatures more similar to HFrEF using ~13,000 genes in a Principal Component Analysis (Figure), quantified by vector distance from HFrEF (p=0.017). Conclusions: HFpEF patients have reduced serum NTproBNP due to lower myocardial NPPB gene expression. HFpEF patients with higher NPPB expression have transcriptomic signatures more similar to HFrEF, highlighting a HFpEF subgroup that may benefit from targeted therapies.

scholarly journals Exercise Training Improved Longitudinal Intrinsic Left Ventricle Function in Heart Failure with Preserved Ejection Fraction

2019 ◽  
Vol 28 (01) ◽  
pp. 044-049
Author(s):  
Sidhi Purwowiyoto ◽  
Budhi Purwowiyoto ◽  
Amiliana Soesanto ◽  
Anwar Santoso
Keyword(s):  
Quality Of Life ◽  
Heart Failure ◽  
Exercise Training ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
World Health ◽  
Volume Index ◽  
Lv Function ◽  
Preserved Ejection Fraction

Exercise improves morbidity, fatality rate, and quality of life in heart failure with low ejection fraction, but fewer data available in heart failure with preserved ejection fraction (HFPEF).The purpose of this study is to test the hypothesis that exercise training might improve the longitudinal intrinsic left ventricular (LV) function in HFPEF patients.This quasi-experimental study had recruited 30 patients with HFPEF. Exercise training program had been performed for a month with a total of 20 times exercise sessions and evaluated every 2 weeks. Echocardiography was performed before sessions, second week and fourth week of exercise training. Six-minute walk tests (6MWTs) and quality-of-life variables using Minnesota living with HF scoring and the 5-item World Health Organization Well-Being Index scoring were measured before and after exercise as well.Left ventricular filling pressure, represented by the ratio of early diastolic mitral flow velocity/early diastolic annular velocity and left atrial volume index, improved during exercise. The longitudinal intrinsic LV function, represented by four-chamber longitudinal strain, augmented during exercise (p < 0.001). Aerobic capacity, measured by 6MWT, increased significantly (p = 0.001). Quality of life improved significantly during exercise (p < 0.001).Exercise training was suggested to improve the longitudinal intrinsic LV function and quality of life in HFPEF. Clinical Trial Registration: ACTRN12614001042639.

scholarly journals 138 Exercise haemodynamics in heart failure with preserved ejection fraction: a systematic review and meta-analysis

2021 ◽  
Vol 23 (Supplement_G) ◽  
Author(s):  
Claudia Baratto ◽  
Sergio Caravita ◽  
Davide Soranna ◽  
Céline Dewachter ◽  
Antoine Bondue ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Body Position ◽  
Meta Analysis ◽  
Right Heart Catheterization ◽  
Standard Test ◽  
Right Atrial ◽  
Peak Exercise ◽  
Heart Catheterization ◽  
Preserved Ejection Fraction

Abstract Aims Exercise right heart catheterization (RHC) is considered the gold-standard test to diagnose heart failure with preserved ejection fraction (HFpEF). However, exercise RHC is an insufficiently standardized technique, and current haemodynamic thresholds to define HFpEF are not universally accepted. We sought to describe the exercise haemodynamics profile of HFpEF cohorts reported in literature, as compared with control subjects. Methods and results We performed a systematic literature review until December 2020. Studies reporting pulmonary artery wedge pressure (PAWP) at rest and peak exercise were extracted. Summary estimates of all haemodynamic variables were evaluated, stratified according to body position (supine/upright exercise), and the PAWP/cardiac output (CO) slope during exercise was extrapolated. Twenty-eight studies were identified, providing data for 2230 HFpEF patients and 706 controls. At peak exercise, patients with HFpEF achieved higher PAWP [30 (29–31) vs. 16 (15–17) mmHg, P &lt; 0.001] and mean right atrial pressure (P &lt; 0.001) than controls. These differences persisted after adjustment for age, sex, body mass index, body position. However, peak PAWP values were highly heterogeneous among the cohorts, with a relative overlap with controls. PAWP/CO slope was steeper in HFpEF than in controls [3.81 (3.24–4.38) vs. 0.91 (0.24–1.58) mmHg/l/min, P &lt; 0.001], even after adjustment for covariates (P = 0.020) (Figure). Conclusions The haemodynamic profile of HFpEF patients is consistent across studies and characterized by a higher left and right filling pressure at rest, magnified by physical exercise. Our analysis strongly suggests that PAWP/CO slope might allow for a more consistent identification of HFpEF, irrespective of body position. This variable likely overcomes the shortcomings of an isolated peak PAWP measurement, allowing for a more univocal identification of HFpEF in patients with unexplained dyspnoea.

Clinical characteristics and prognostic impact of pulmonary hypertension in heart failure with preserved ejection fraction: the PURSUIT HFpEF study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
F Sera ◽  
T Ohtani ◽  
K Nakamoto ◽  
T Yamada ◽  
Y Yasumura ◽  
...  
Keyword(s):  
Heart Failure ◽  
Pulmonary Hypertension ◽  
Ejection Fraction ◽  
Right Atrial ◽  
Rank Test ◽  
Heart Catheterization ◽  
Funding Source ◽  
Prognostic Impact ◽  
Preserved Ejection Fraction ◽  
Private Company

Abstract Background Heart failure (HF) with preserved ejection fraction (HFpEF) can develop pulmonary hypertension (PH), which can result from pre-capillary PH as well as post-capillary PH. However, the prevalence and clinical significance of pre-capillary component of PH in HFpEF remain unknown. Purpose We aimed to investigate prevalence, clinical features, and prognostic impact of pre-capillary and/or post capillary PH associated with HFpEF. Methods From the PURSUIT-HFpEF (Prospective Multicenter Observational Study of Patients with Heart Failure with Preserved Ejection Fraction) registry, 204 patients (men: 46%, age: 79±9 years) who were hospitalized with HF and underwent right heart catheterization were divided into 4 groups according to the PH guidelines: non-PH, isolated post-capillary PH (Ipc-PH), pre-capillary PH, and combined pre- and post-capillary PH (Cpc-PH). Patients who had been diagnosed with idiopathic pulmonary arterial hypertension were excluded from the analysis. Results The prevalence of PH was 31% (Ipc-PH: 22%, pre-capillary PH: 3%, Cpc-PH: 6%). The prevalence of subcategories of PH was significantly different depending on mean right atrial pressure (RAP) (figure). Echocardiography at discharge showed no significant differences in RV diameter or TAPSE, but smaller LV diameter and higher E/e' in pre-capillary PH and Cpc-PH, which resulted in a higher operant diastolic elastance (Ed). Composite endpoint of all-cause mortality and HF hospitalization at 1 year occurred 13% in non-PH, 25% in Ipc-PH, 49% in pre-capillary PH, and 63% in Cpc-PH, respectively (p=0.001 by log-rank test). Conclusions Distinct prevalence of PH was observed in the groups with different RAP levels. Pre-capillary component of PH was associated with impaired LV diastolic function and worse outcomes in HFpEF. Figure 1 Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Roche Diagnostics K.K.; Fuji Film Toyama Chemical Co. Ltd

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