Long - Acting Coronary Vasodilator Drugs :

Recognition of the value of glyceryl trinitrate (nitroglycerine) in the treatment and pr evention of anginal attacks has confirmed the belief that coronarv blood flow may be influenced favorablv by drug therapy and has led to a search for vasodilators capable of more prolonged action. The most popular of the newer agents which are alleged to have this desirable effect are Metamine, Paveril, Nitroglyn and Peritrate. In order to evaluate these drugs, the modifying action of each agent on the electrocardiographic response to standard exercise (Master two-step test) was recorded and compared in 21 carefully selected patients with coronary disease. Analysis of the results obtained with varying dosage administered from one to six hours prior to exercise disclosed that Peritrate was vastly superior to the other three drugs and that it alone was worthy of the designation "long-acting coronary v-asodilator."