caa a22 4500 606221360 CHVBK 20210128101128.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00380-014-0534-3 doi (NATIONALLICENCE)springer-10.1007/s00380-014-0534-3 Effects of flecainide on left ventricular pressure gradient and symptoms in obstructive hypertrophic cardiomyopathy: a comparison of flecainide and disopyramide [Elektronische Daten] [Shintaro Haruki, Yuichiro Minami, Atsushi Suzuki, Nobuhisa Hagiwara] It remains unclear whether flecainide, a Class I antiarrhythmic drug, improves left ventricular pressure gradient (LVPG) or symptoms in patients with obstructive hypertrophic cardiomyopathy (HCM). Our study evaluated the long-term efficacy of flecainide, compared to disopyramide, when administered orally, on LVPG and symptoms in obstructive HCM patients. Among 164 obstructive HCM patients, 15 were administered oral flecainide therapy and 33 administered oral disopyramide therapy. LVPG declined from 79.8±36.6 to 39.2±36.7mmHg (p=0.003) after flecainide therapy and from 74.5±26.4 to 31.4±24.8mmHg (p<0.001) after disopyramide therapy. The percent reduction in LVPG was −47.9±43.2% in patients treated with flecainide, comparable to the results for those treated with disopyramide (−57.1±33.0%; p=0.425). We found no significant differences in improvement in NYHA functional class between patients treated with flecainide and those treated with disopyramide (p=0.331). Patients treated with flecainide exhibited no significant adverse side effects, and there was no need for myectomy or alcohol septal ablation to reduce LVPG and symptoms. Improvements in LVPG and symptoms were similar in patients treated with flecainide and patients treated with disopyramide, suggesting that flecainide is a potentially useful alternative for symptomatic obstructive HCM patients, particularly those with disopyramide-induced vagolytic side effects, narrow angle glaucoma, or prostatic hyperplasia and pre-existing urination difficulties. Our data must be viewed with caution, however, in view of the small number of study patients. Flecainide therapy will require further proof of safety before it can be routinely recommended in patients with symptomatic obstructive HCM. Springer Japan, 2014 Antiarrhythmic agents nationallicence Hypertrophic cardiomyopathy nationallicence Obstruction nationallicence Haruki Shintaro Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut Minami Yuichiro Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut Suzuki Atsushi Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut Hagiwara Nobuhisa Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut Heart and Vessels Springer Japan 30/5(2015-09-01), 604-610 0910-8327 30:5<604 2015 30 380 https://doi.org/10.1007/s00380-014-0534-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00380-014-0534-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Haruki Shintaro Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut NATIONALLICENCE 700 1- Minami Yuichiro Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut NATIONALLICENCE 700 1- Suzuki Atsushi Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut NATIONALLICENCE 700 1- Hagiwara Nobuhisa Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, 162-8666, Tokyo, Japan aut NATIONALLICENCE 773 0- Heart and Vessels Springer Japan 30/5(2015-09-01), 604-610 0910-8327 30:5<604 2015 30 380