Relation of Systolic Blood Pressure on the Following Day with Post-Discharge Mortality in Hospitalized Heart Failure Patients with Preserved Ejection Fraction

Epidemiology, Pathophysiology, Diagnosis, and Therapy of Heart Failure With Preserved Ejection Fraction in Japan

Heart failure (HF) with preserved ejection fraction (HFpEF) is a global health care problem, with diagnostic difficulty, limited treatment options and high morbidity and mortality rates. The prevalence of HFpEF is increasing because of the aging population and the increasing burden of cardiac and metabolic comorbidities, such as systemic hypertension, diabetes, chronic kidney disease, and obesity. The knowledge base is derived primarily from the United States and Europe, and data from Asian countries, including Japan, remain limited. Given that phenotypic differences may exist between Japanese and Western patients with HFpEF, careful characterization may hold promise to deliver new therapy specific to the Japanese population. In this review, we summarize the current knowledge regarding the epidemiology, pathophysiology and diagnosis of and the potential therapies for HFpEF in Japan.

Systolic Blood Pressure and 1-Year Clinical Outcomes in Patients Hospitalized for Heart Failure

Background

High systolic blood pressure (SBP) is an important risk factor for the progression of heart failure (HF); however, the association between SBP and prognosis among patients with established HF was uncertain. This study aimed to investigate the association between SBP and long-term clinical outcomes in patients hospitalized for HF.

Methods

This study prospectively enrolled adult patients hospitalized for HF in 52 hospitals from 20 provinces in China. SBPs were measured in a stable condition judged by clinicians during hospitalization before discharge according to the standard research protocol. The primary outcomes included 1-year all-cause death and HF readmission. The multivariable Cox proportional hazards regression models were fitted to examine the association between SBP and clinical outcomes. Restricted cubic splines were used to examine the non-linear associations.

Results

The 4,564 patients had a mean age of 65.3 ± 13.5 years and 37.9% were female. The average SBP was 123.2 ± 19.0 mmHg. One-year all-cause death and HF readmission were 16.9 and 32.7%, respectively. After adjustment, patients with SBP < 110 mmHg had a higher risk of all-cause death compared with those with SBP of 130–139 mmHg (HR 1.71; 95% CI: 1.32–2.20). Patients with SBP < 110 mmHg (HR 1.36; 95% CI: 1.14–1.64) and SBP ≥ 150 mmHg (HR 1.26; 95% CI: 1.01–1.58) had a higher risk of HF readmission, and the association between SBP and HF readmission followed a J-curve relationship with the nadir SBP around 130 mmHg. These associations were consistent regardless of age, sex, left ventricular ejection fraction, hypertension, coronary heart disease, and medications for HF.

Conclusion

In patients hospitalized for HF, lower SBP in a stable phase during hospitalization portends an increased risk of 1-year death, and a J-curve association has been observed between SBP and 1-year HF readmission. These associations were consistent among clinically important subgroups.

Simplified Academic Research Consortium for High Bleeding Risk (ARC-HBR) Definition Predicts Bleeding Events in Patients With Heart Failure

BACKGROUND

It has recently been reported that the simplified Academic Research Consortium for High Bleeding Risk (ARC-HBR) definition, which excludes 6 rare criteria, is comparable to the original ARC-HBR definition in predicting major bleeding in patients with coronary artery disease (CAD) who undergo percutaneous coronary intervention. In this study, we investigated whether the simplified ARC-HBR definition could be applied to patients with heart failure (HF) to identify those at high bleeding risk (HBR).Methods and Results:In all, 2,437 patients hospitalized for HF were enrolled in this study. Patients were divided into 2 groups based on the simplified ARC-HBR definition: those at HBR (n=2,026; 83.1%) and those not (non-HBR group; n=411; 16.9%). The HBR group was older (72.0 vs. 61.0 years; P<0.001) and had a lower prevalence of CAD (31.1% vs. 36.5%; P=0.034) than the non-HBR group. Kaplan-Meier analysis showed that post-discharge bleeding events defined as hemorrhagic stroke or gastrointestinal bleeding were more frequent in the HBR than non-HBR group (log-rank P<0.001). The simplified ARC-HBR definition accurately predicted bleeding events (Fine-Gray model; hazard ratio 2.777, 95% confidence interval 1.464-5.270, P=0.001).

CONCLUSIONS

The simplified ARC-HBR definition predicts a high risk of bleeding events in patients with HF.

Association of long-term SBP with clinical outcomes and quality of life in heart failure with preserved ejection fraction: an analysis of the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist trial

AIMS

To determine the associations of long-term SBP (LT-SBP) levels with clinical outcomes and health-related quality of life in heart failure with preserved ejection fraction (HFpEF).

METHODS AND RESULTS

We analyzed participants from the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist (TOPCAT) study with available different SBP measurements from different follow-ups (n = 3310). LT-SBP was the mean SBP value from 4-week measurement to the last one. The outcome measures are all-cause mortality and a composite of heart failure readmission or all-cause mortality and the Kansas City Cardiomyopathy Questionnaire (KCCQ) overall summary score. To determine the associations of LT-SBP and outcomes, we used adjusted Cox proportional hazards models and restricted cubic spline models. After multivariable adjustment, LT-SBP of 120-129 and 130-139 mmHg were associated with a lower risk of mortality (hazard ratio 0.66, 95% CI 0.51-0.87, P = 0.003; hazard ratio 0.68, 95% CI 0.51-0.90, P = 0.007, respectively); LT-SBP of 100-119 mmHg had similar risk of mortality (hazard ratio 0.96, 95% CI 0.72-1.28, P = 0.778) compared with LT-SBP of at least 140 mmHg. There was U-shaped relationship between LT-SBP and all-cause mortality (P < 0.001) with nadir risk occurring around 123 mmHg. Similar relationships were observed between LT-SBP and composite end point of heart failure readmission or all-cause mortality. The adjusted mean improvement in KCCQ score was significantly higher in the 120-129 mmHg group than in the at least 140 mmHg group beginning from the 12-month follow-up visit without significant differences in other groups.

CONCLUSION

Among patients with HFpEF, long-term control of SBP level at 120-129 mmHg is independently associated with the highest risk reduction of all-cause mortality and improvement of KCCQ score. Future randomized clinical trials need to specifically evaluate optimal SBP treatment goals in patients with HFpEF.

Management of hypertension in heart failure with preserved ejection fraction: is there a blood pressure goal?

PURPOSE OF REVIEW

Hypertension remains a leading risk factor for heart failure with preserved ejection fraction (HFpEF), and elevated blood pressure (BP) portends an adverse prognosis in patients with established HFpEF. We summarize current evidence for mechanisms linking hypertension to HFpEF and management of hypertension in HFpEF.

RECENT FINDINGS

Data suggest a complex, multifactorial pathophysiology driving the association between hypertension and HFpEF, including left ventricular hypertrophy, diastolic dysfunction, atrial dysfunction, coronary microvascular disease, endothelial dysfunction, myocardial injury and fibrosis. Although intensive BP control may attenuate these processes, this hypothesis has not been tested on clinical outcomes in a dedicated randomized controlled trial (RCT) in HFpEF. Antihypertensive therapies variably improve key surrogate markers in HFpEF, though BP reduction generally does not account for these benefits. Accordingly, BP targets are extrapolated from observational studies and RCTs testing heart failure therapies that affect BP in addition to dedicated RCT data in patients at elevated risk (without heart failure).

SUMMARY

Clinicians should recognize the risk of disease progression and poor outcomes associated with uncontrolled hypertension in HFpEF. Intensive BP control, preferably by therapies known to improve outcomes in heart failure, may slow key pathways in disease progression. Future RCTs testing intensified BP control strategies in HFpEF are warranted.

Distinctive prognostic factor of heart failure with preserved ejection fraction stratified with admission blood pressure

Aims

The prognostic importance of admission systolic blood pressure (SBP) in heart failure with preserved ejection fraction (HFpEF) is elusive. We aimed to clarify the pathophysiological differences between patients categorized with admission SBP among HFpEF patients.

Methods and results

We studied 1008 inpatients from PURSUIT‐HFpEF, a multicentre prospective observational registry. We classified patients as having elevated (>140 mmHg), preserved (90–140 mmHg), or low (<90 mmHg) admission SBP. Most cases had elevated (n = 584) or preserved (n = 420) SBP; the four cases with low SBP were excluded. Univariable Cox regression testing revealed that preserved SBP patients had a higher risk of a composite of cardiac death and heart failure re‐hospitalization [hazard ratio (HR) 1.48, 95% confidence interval (CI) 1.14–1.92, P = 0.0035] than elevated SBP patients. In multivariable Cox regression models, while prior heart failure hospitalization (HR 1.36, 95% CI 1.01–2.84, P = 0.0453), atrial fibrillation (HR 1.82, 95% CI 1.10–2.99, P = 0.0209), and N‐terminal pro‐B‐type natriuretic peptide (HR 1.94, 95% CI 1.10–3.43, P = 0.0229) at discharge were significantly associated with adverse outcomes in elevated SBP patients, N‐terminal pro‐B‐type natriuretic peptide (HR 2.06, 95% CI 1.04–4.07, P = 0.0373) and right ventricular‐pulmonary artery uncoupling reflected by the tricuspid annular plane systolic excursion/pulmonary artery systolic pressure ratio (HR 0.19, 95% CI 0.05–0.65, P = 0.0075) at discharge were significant prognostic factors in preserved SBP patients.

Conclusions

Patients with preserved admission SBP had significant higher risks for adverse outcomes than those with elevated SBP in HFpEF. Tricuspid annular plane systolic excursion/pulmonary artery systolic pressure was the distinctive prognostic factor between the two groups.

Cardio-Ankle Vascular Index Predicts Post-Discharge Stroke in Patients with Heart Failure

AIM

We aimed to evaluate the significance of the cardio-ankle vascular index (CAVI) to predict stroke in patients with heart failure (HF).

METHODS

This was a prospective observational study, which recruited clinical data from a total of 557 patients who had been hospitalized for HF and undergone CAVI. According to the receiver operating characteristic curve analysis, the accurate cut-off value of CAVI in predicting post-discharge stroke was 9.64. We divided the patients into two groups: the high-CAVI group (HF patients with CAVI ≥ 9.64, n=111, 19.9%) and the low-CAVI group (HF patients with CAVI ＜9.64, n=446, 80.1%). We compared the patients' characteristics and post-discharge prognosis. The primary endpoint was stroke.

RESULTS

The high-CAVI group was older (73.0 vs. 65.5 years old, P＜0.001). Male sex (73.9% vs. 61.4%, P=0.015), coronary artery disease (47.7% vs. 36.1%, P=0.024), and diabetes mellitus (54.1% vs. 37.4%, P=0.001) were more prevalent in the high-CAVI group. In contrast, there was no difference in left ventricular ejection fraction, and prevalence of hypertension and dyslipidemia. The Kaplan-Meier analysis demonstrated that post-discharge stroke rate was higher in the high-CAVI group than in the low-CAVI group (log-rank P=0.005). In multivariate Cox proportional hazard analysis, high CAVI was found to be an independent predictor of stroke, with an adjusted hazard ratio of 3.599, compared to low CAVI.

CONCLUSION

CAVI independently predicts stroke in patients with HF.

Clinical Predictors Influencing the Length of Stay in Emergency Department Patients Presenting with Acute Heart Failure

Background and objectives: Acute heart failure is a common problem encountered in the emergency department (ED). More than 80% of the patients with the condition subsequently require lengthy and repeated hospitalization. In a setting with limited in-patient capacity, the patient flow is often obstructed. Appropriate disposition decisions must be made by emergency physicians to deliver effective care and alleviate ED overcrowding. This study aimed to explore clinical predictors influencing the length of stay (LOS) in patients with acute heart failure who present to the ED. Materials and Methods: We conducted prognostic factor research with a retrospective cohort design. Medical records of patients with acute heart failure who presented to the ED of Ramathibodi Hospital from January to December 2015 were assessed for eligibility. Thirteen potential clinical predictors were selected as candidates for statistical modeling based on previous reports. Multivariable Poisson regression was used to estimate the difference in LOS between patients with and without potential predictors. Results: A total of 207 patients were included in the analysis. Most patients were male with a mean age of 74.2 ± 12.5 years. The median LOS was 54.6 h (Interquartile range 17.5, 149.3 h). From the multivariable analysis, four clinical characteristics were identified as independent predictors with an increase in LOS. These were patients with New York Heart Association (NYHA) functional class III/IV (+72.9 h, 95%Confidence interval (CI) 23.9, 121.8, p = 0.004), respiratory rate >24 per minute (+80.7 h, 95%CI 28.0, 133.3, p = 0.003), hemoglobin level <10 mg/dL (+60.4 h, 95%CI 8.6, 112.3, p = 0.022), and serum albumin <3.5 g/dL (+52.8 h, 95%CI 3.6, 102.0, p = 0.035). Conclusions: Poor NYHA functional class, tachypnea, anemia, and hypoalbuminemia are significant clinical predictors of patients with acute heart failure who required longer LOS.