The role of oxygen extraction in peripheral tissues in exercise capacity in chronic heart failure.


To elucidate the role of oxygen extraction during exercise in chronic heart failure (CHF), 26 patients underwent the symptom-limited maximal exercise. Hemodynamics, oxygen uptake (VO2) and blood gas were examined during exercise. Group I (n = 16, VO2max less than 20 ml/min/kg) showed severe cardiac dysfunction during exercise compared with group II (n = 10… (More)