after the administration of theophylline , the time to onset of angina , the heart rate-blood pressure product at 1-mm st-segment depression and the exercise duration were similar to that after isosorbide dinitrate administration ( 9.8 +/- 2.3 vs 9.3 +/- 1.7 minutes , 207 +/- 41 vs 207 +/- 48 beats/min.mm hg.10 ( -2 ) and 10.8 +/- 2 vs 10.4 +/- 2 minutes , respectively ) .
C0002962
angina
C0022252
isosorbide dinitrate