Maximal cardiac output during upright exercise: Approximate normal standards and variations with coronary heart disease☆

摘要: Abstract The observed normal ranges for age- and weight-adjusted maximal oxygen uptake age-adjusted heart rate measured during the Bruce protocol are shown 99 sedentary men. On basis of observations in 10 men, relation between cardiac output (measured with direct Fick principle) was used to estimate limits stroke volume These standards were then evaluate results 77 studies patients coronary disease who had various clinical angiographic findings performed symptom-limited upright exercise while using principle. Patients angina infarction showed greatest impairment output, when compared or healed alone. Arterial-mixed venous difference at comparable three groups. surgical cohort (studled after aortocoronary vein bypass grafting) significantly higher rates. an ejection fraction less than 50 percent impaired volume.