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  • Title: Diltiazem for long-term therapy of coronary arterial spasm.
    Author: Schroeder JS, Lamb IH, Ginsburg R, Bristow MR, Hung J.
    Journal: Am J Cardiol; 1982 Feb 18; 49(3):533-7. PubMed ID: 7058764.
    Abstract:
    The first 36 patients with coronary arterial spasm treated with diltiazem and followed up at the Stanford University Coronary Artery Spasm Clinic for 6 months or longer are described. There were 13 men and 23 women with a mean age of 50.2 years; the mean duration of angina was 36.1 months. All patients had angina at rest with a good or fail response to sublingual nitroglycerin. During a mean of 17.5 months of diltiazem therapy, the frequency of angina was reduced from a mean of 21.5 to 1.3 attacks/week. This 94 percent reduction in pain frequency occurred when either 240 or 360 mg of diltiazem was administered daily. Sixteen patients required the addition of isosorbide dinitrate to achieve a painfree state. Pain breakthrough occurred a mean of 1.7 times during the 17.5 month follow-up period but tended to be of short duration. Six patients had trace to 1+ pedal edema and no other adverse effects occurred. It is concluded that diltiazem is highly effective and well tolerated for the long-term prophylaxis and treatment of angina in patients with coronary spasm.
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