Noninvasive assessment of cardiac function during exercise in patients with CHF or COPD: measurement of aortic bloodflow indices by continuous wave Doppler.


OBJECTIVE To test whether continuous-wave Doppler measurements of aortic bloodflow indices would reliably distinguish patients with congestive heart failure (CHF) from those with chronic obstructive pulmonary disease (COPD) and a similar degree of exertional dyspnea. DESIGN. Parallel group comparison. SETTING University teaching hospital. PARTICIPANTS… (More)