Sustained antianginal efficacy of oral high-dose isosorbide dinitrate in patients with coronary heart disease.
Ten patients with angiographically proven coronary heart disease, stable exercise-induced angina pectoris, and reproducible ST-segment depression were treated with ISDN tablets in daily doses of 240 mg (6 X 40 mg) and placebo for 28 days each on the basis of a randomized double-blind protocol with intraindividual crossover. On the 1st, 7th and 28th days of each treatment cycle an exercise stress test was performed 1 h after the second dose of the day. ISDN treatment resulted in a sustained reduction of anginal attacks, with a weekly rate ranging from 1.4 to 3.9 (mean values) as compared to 10.5 to 11.7 attacks during placebo treatment (2 p less than 0.001). Exercise-induced ST-segment depression during ISDN-therapy (constant work-load) was found to be significantly improved as compared to placebo: day 1, ISDN: 5.3 +/- 1.5 mm vs. placebo: 12.1 +/- 2.2 mm (2p less than 0.01); day 7, ISDN: 7.6 +/- 2.0 mm vs. placebo: 10.8 +/- 2.1 mm (2p less than 0.05); day 28, ISDN: 5.7 +/- 1.2 mm vs. placebo: 11.2 +/- 2.1 mm (2p less than 0.01). Heart rate in the upright position (tilting table) was significantly different between ISDN and placebo on day 7: ISDN 92 +/- 3 bpm vs. placebo 85 +/- 4 bpm (2p less than 0.001), but not on day . 28.(ABSTRACT TRUNCATED AT 250 WORDS)
D000284:Administration, Oral; D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000188:drug therapy*; D001794:Blood Pressure / Q000187:drug effects; D005080:Exercise Test; D005260:Female; D006261:Headache / Q000139:chemically induced; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007548:Isosorbide Dinitrate / Q000008:administration & dosage* / Q000009:adverse effects / Q000097:blood; D008297:Male; D008875:Middle Aged
D007548:Isosorbide Dinitrate