title: Initial adjustment of cardiac output in response to onset of exercise in patients with chronic pacemaking as studied by the measurement of pulmonary blood flow.
mesh_terms: D000114:Acetylene; D002302:Cardiac Output; D006801:Humans; D010138:Pacemaker, Artificial; D005082:Physical Exertion; D011652:Pulmonary Circulation
chemical_list: D000114:Acetylene