In patients with heart failure, the VE/VCO2 slope from cardiopulmonary exercise testing is a superior and longer-lasting prognostic marker than peak VO2, retaining predictive value for up to 3 years.
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VE/VCO2 slope may offer more durable prognostic value than peak VO2 in HF; leaves open need for prospective outcome trials.
Arena et al. (2010) studied this question.
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