![]() ![]() The response of V˙ E relative to V˙CO 2 ( V˙ E/ V˙CO 2) is commonly termed ventilatory efficiency and is becoming a common physiological tool, in conjunction with other key variables such as operating lung volumes, to evaluate exercise responses in patients with chronic conditions. During exercise, ventilation ( V˙ E) increases in proportion to metabolic demand to maintain arterial blood gas and acid-base balance. MacDonald Centre for Lung Health, Covenant Health, Edmonton, AB, CanadaĬardiopulmonary exercise testing (CPET) is a method for evaluating pulmonary and cardiocirculatory abnormalities, dyspnea, and exercise tolerance in healthy individuals and patients with chronic conditions. ![]() 3Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada.2Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada.1Clinical Physiology Laboratory, Division of Pulmonary Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, Canada. ![]()
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