Comment on

• Global cardiovascular reserve dysfunction in heart failure with preserved ejection fraction.

  Borlaug BA, Olson TP, Lam CS, Flood KS, Lerman A, Johnson BD, Redfield MM. Borlaug BA, et al. J Am Coll Cardiol. 2010 Sep 7;56(11):845-54. doi: 10.1016/j.jacc.2010.03.077. J Am Coll Cardiol. 2010. PMID: 20813282 Free PMC article.
• Hemodynamic basis of exercise limitation in patients with heart failure and normal ejection fraction.

  Maeder MT, Thompson BR, Brunner-La Rocca HP, Kaye DM. Maeder MT, et al. J Am Coll Cardiol. 2010 Sep 7;56(11):855-63. doi: 10.1016/j.jacc.2010.04.040. J Am Coll Cardiol. 2010. PMID: 20813283