[Effect of Qingxintong on exercise ECG and cardiac function in patients with angina pectoris].
D000098:Acetophenones / Q000494:pharmacology*; D000368:Aged; D000787:Angina Pectoris / Q000188:drug therapy / Q000503:physiopathology*; D004562:Electrocardiography; D005080:Exercise Test; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014665:Vasodilator Agents / Q000494:pharmacology*
D000098:Acetophenones; D014665:Vasodilator Agents; C032940:3,4-dihydroxyacetophenone