Comparative hemodynamic effects of placebo and oral isosorbide dinitrate in patients with significant coronary artery disease.
Comparative hemodynamic effects of placebo and 10 mg of oral isosorbide dinitrate were studied in patients with significant coronary artery disease (larger than or equal to 75 per cent lumen narrowing) proved angiographically. Isosorbide dinitrate or placebo was given to eight and 10 patients, respectively, in a double-blind fashion. Cardiac performance at rest and during supine leg exercise was evaluated before and 60 minutes after drug administration. In the resting state, isosorbide dinitrate compared to placebo significantly reduced the left ventricualr (systolic and diastolic), mean pulmonary artery and mean aortic pressures, cardiac index, stroke index, left ventricular work index, stroke work index, and mean systolic ejection rate. Isosorbide dinitrate also significantly reduced left ventricular (systolic and diastolic and mean pulmonary artery pressures during exercise. This study indicates that 10 mg of isosorbide dinitrate has a significant influence on ischemic left ventricular dysfunction 60 minutes after its oral administration.
D000328:Adult; D000704:Analysis of Variance; D000787:Angina Pectoris / Q000503:physiopathology; D001794:Blood Pressure / Q000187:drug effects; D002302:Cardiac Output / Q000187:drug effects; D002986:Clinical Trials as Topic; D003327:Coronary Disease / Q000188:drug therapy* / Q000503:physiopathology; D004562:Electrocardiography; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D007548:Isosorbide Dinitrate / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D010919:Placebos; D011652:Pulmonary Circulation / Q000187:drug effects
D010919:Placebos; D007548:Isosorbide Dinitrate