title: Evaluation of quinidine short and long-acting in control of arrhythmias.
abstract: Twenty-one patients with arrhythmias responsive to quinidine were studied both with regard to consistency of response as determined by repeat Holter Monitoring and in half of these patients a comparison of short and long-acting quinidine was made. Holter Monitoring demonstrated greater than 60% reduction of ectopic activity in all but one patient and reproducibility varied by less than 10% in nineteen of twenty-one patients. Nine of eleven patients showed the same response to long-acting quinidine as compared to short-acting. Eight of nine patients having significant numbers of ectopic pairs showed a significant reduction with quinidine therapy, both short-acting and long-acting.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000097:blood / Q000188:drug therapy*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D011802:Quinidine / Q000097:blood / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D011802:Quinidine