Exercise intolerance in heart failure with preserved ejection fraction: shifting focus from the heart to peripheral skeletal muscle.

نویسندگان

  • Mathew S Maurer
  • P Christian Schulze
چکیده

A cardinal feature of the syndrome of heart failure, irrespective of ejection fraction, is exercise intolerance, which is strongly associated with quality of life and clinical outcomes (1). Methods to evaluate exercise tolerance include selfreports of activities of daily living, clinician assessment of New York Heart Association functional class, and provocative stress testing. Cardiopulmonary exercise testing has emerged as an objective and reproducible means of quantifying oxygen consumption (1), which is determined by multiple factors including lung function, cardiac output, hemoglobin, and peripheral factors that include the ability to vasodilate, ensuring adequate delivery of oxygenated blood to exercising muscles and the ability of these muscles to utilize oxygen during exercise (2).

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عنوان ژورنال:
  • Journal of the American College of Cardiology

دوره 60 2  شماره 

صفحات  -

تاریخ انتشار 2012