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Relationship Between Ventilatory Equivalent For Carbon Dioxide And Ejection Fraction Of Left Ventricle, Shun-Ping Cheng, Chen-Liang Chou, Huey-Ling Yu, Tcho-Jen Liu, Tao-Chang Hsu

Rehabilitation Practice and Science

Cardiopulmonary exercise testing is a powerful non-invasive mean for objectively assessing the exercise response of patients with cardiovascular or respiratory disease. The ventilatory equivalent for CO2(V E/V CO2)derived from gas exchange analysis is considered to be an estimate of dead space ventilation and provides an assessment of the efficiency of minute ventilation during exercise. Clark and associates showed that the V E/V CO2 ratio differentiated patients into subgroups in terms of the severity of congestive heart failure by measuring the maximal oxygen consumption and theduration of exercise time. Our study was designed to differentiate patients into subgroups by measuring the …