Antianginal effects of amlodipine at a single dose on exertional angina patients using treadmill exercise testing--a randomized crossover study in comparison with placebo
| Autor: | Hideo Miyagawa, Toshihiro Kunimi, Hiroshi Kishida, Noritake Hata, Harumi Nishiyama, Kazuzo Katoh |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Male
Administration Oral Physical exercise Placebo law.invention Angina Pectoris Randomized controlled trial law Oral administration Medicine Humans Pharmacology (medical) Amlodipine Aged Pharmacology business.industry Hemodynamics General Medicine Middle Aged Crossover study Clinical trial Rate pressure product Anesthesia Exercise Test Female Cardiology and Cardiovascular Medicine business medicine.drug |
| Zdroj: | Cardiovascular drugs and therapy. 6(5) |
| ISSN: | 0920-3206 |
| Popis: | With eight cases of stable exertional angina as subjects, the antianginal action and sustained effects of single 10 mg oral doses of new calcium antagonists amlodipine were assessed by treadmill exercise tests in randomized crossover trials with respect to a placebo. Exercise tests were conducted before as well as 4, 8, and 24 hours after administration, and plasma amlodipine concentration was investigated at the same times. The maximal exercise time was 299 +/- 43 seconds before as compared with 346 +/- 49 seconds 4 hours after administration and 368 +/- 50 seconds 8 hours after administration, a significant prolongation in each case (p0.01). Moreover, the exercise time elapsed until 1 mm of ST-segment depression, as well as the ST-segment depression measured at the same time, were both significantly improved as compared with the placebo results. The plasma amlodipine concentration reached a peak 8 hours after administration and displayed an effective level even 24 hours after administration. The value of delta PRP measured at the same time during the exercise test was also significantly reduced as compared with the placebo results, even 24 hours after administration of amlodipine. These findings supported the conclusion that single 10-mg doses of amlodipine provide stable antianginal action over a 24-hour period. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink