Related Experiment Video
Updated: Dec 31, 2025

Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
Published on: April 4, 2022
[Drug therapy of angina pectoris. Are the possibilities exploited well enough?]
1Medisinsk avdeling B, Rikshospitalet, Oslo.
Abstract:
A retrospective comparative study of the use of antianginal drugs in 1987 and 1992/93 has been carried out in unselected series of patients admitted for angiographic evaluation. Compared with the patients in 1987 the patients in 1992/93 were treated with approximately 50% of the doses of beta-blockers and isosorbide dinitrate. There was also a considerable reduction of the proportion of patients who received doses of beta-blockers of a similar level as used in large multicentre studies showing improved survival after myocardial infarction. The explanation of this change in therapy may be due, at least partly, to a general fear of side-effects.
Related Concept Videos
Angina V: Nursing Management
Angina IV: Management
Angina III: Clinical Manifestations and Assessment
Coronary Artery Disease V: Interprofessional Care
Antianginal Drugs: Nitrates and β-Blockers
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...

