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Epidemiology, pathophysiology and clinical outcomes for heart failure patients with a mid-range ejection fraction.

Abstract：

AIMS:Heart failure (HF) patients with a mid-range ejection fraction (HFmrEF) are not well characterized. Accordingly, we examined the epidemiology, pathophysiology and clinical outcomes of HF patients with a left ventricular ejection fraction (LVEF) of 40-50%. METHODS AND RESULTS:We identified 168 patients with an LVEF between 40-50% at enrollment into a HF registry, and determined whether LVEF was improved, worsened, or the same compared to a prior LVEF. Three subgroups of HFmrEF patients were identified: HFmrEF improved (prior LVEF <40%); HFmrEF deteriorated (prior LVEF >50%); HFmrEF unchanged (prior LVEF 40-50%). The majority of patients (73%) were HFmrEF improved, 17% were HFmrEF deteriorated, and 10% were HFmrEF unchanged. The demographics of the HFmrEF cohort were heterogeneous, with more coronary artery disease in the HFmrEF improved group and more hypertension and diastolic dysfunction in the HFmrEF deteriorated group. HFmrEF improved patients had significantly (P<0.001) better clinical outcomes relative to matched patients with HF and reduced ejection fraction, and significantly (P<0.01) improved clinical outcomes relative to HFmrEF deteriorated patients, whereas clinical outcomes of the HFmrEF deteriorated subgroup of patients were not significantly different from matched HF patients with preserved ejection fraction. CONCLUSIONS:Patients with a mid-range LVEF are heterogeneous. Obtaining historical information with regard to prior LVEF allows one to identify a distinct pathophysiological substrate and clinical course for HFmrEF patients. Viewed together, these results suggest that in the modern era of HF therapeutics, the use of LVEF to categorize the pathophysiology of HF may be misleading, and argue for establishing a new taxonomy for classifying HF patients.

journal_name

Eur J Heart Fail

journal_title

European journal of heart failure

authors

Rastogi A,Novak E,Platts AE,Mann DL

doi

10.1002/ejhf.879

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

1597-1605

issue

12

eissn

1388-9842

issn

1879-0844

journal_volume

19

pub_type

杂志文章

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