Chest
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Stress testing of the pulmonary circulation (via increasing pulmonary blood flow) can reveal abnormal mean pulmonary artery pressure-cardiac output (mPpa-Q) responses, which may facilitate early diagnosis of pulmonary vascular disease. We investigated the application of dobutamine stress echocardiography (DSE) for the noninvasive assessment of mPpa-Q relationships. ⋯ Noninvasive assessment of mPpa-Q relationships is feasible with dobutamine stress. DSE may potentially be a useful noninvasive technique for stress testing of the pulmonary vasculature.