use of Open Circuit Spirometry to measure VO2max?   Group of answer choices Most accurate measurement of exercise capacity   useful in defining prognosis and defining the timing of cardiac transplantation and other advanced therapies in patients with heart failure   helpful in the differential diagnosis of patients with suspected cardiovascular and respiratory diseases   A high exercise capacity is indicative of a high cardiac output and therefore suggests the absence of serious limitations of left ventricular function   All of the above A, C, and D

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