In a Chinese cohort of chronic heart failure patients with LVEF ≤ 45%, those with LVEF ≤ 35% had significantly higher all-cause mortality and cardiovascular readmission rates.
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Higher mortality in LVEF ≤35% supports finer risk stratification in HF with LVEF ≤45%; leaves optimal management open pending prospective data.
Cheng et al. (2011) studied this question.
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