Efficacy of the Long-Acting Nitro Vasodilator Pentaerithyrityl Tetranitrate in Patients With Chronic Stable Angina Pectoris Receiving Anti-Anginal Background Therapy With Beta-Blockers: A 12-Week, Randomized, Double-Blind, Placebo-Controlled Trial

Study Questions:

What is the anti-ischemic efficacy of pentaerithrityl tetranitrate (PETN), compared to placebo, in patients with chronic stable angina pectoris on background anti-ischemic therapy?