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  • Abstract
  • Look Inside

 We report a case of severe hypertrophic obstructive cardiomyopathy (HOCM) that was dramatically improved by percutaneous transluminal infarction (PTSMA). A 43-year-old man with a history of chest pain and dyspnea on effort (NYHA class II-III) was admitted to our hospital. His clinical findings were typical of HOCM. Cardiac catheterization showed a resting pressure gradient across the left ventricular outflow tract of 100 mmHg despite medical treatment. Coronary angiography revealed a large septal branch of the left anterior descending artery. A 2.5 mm percutaneous transluminal angioplasty balloon was inserted into the septal artery via a 0.014 inch guidewire. The balloon was inflated to a pressure of 4 atms, occluding the artery. Absolute alcohol was injected slowly through the inflated balloon into the artery. Five minutes after the alcohol injection was completed, the balloon was deflated and removed. The septal branch was completely blocked and the pressure gradient decreased to 10 mmHg after the procedure. The patient remains asymptomatic (NYHA I) and has returned to work. Further long-term follow-up is needed, but PTSMA would seem to he a promising technique for reducing the pressure gradient in symptomatic patients with HOCM.


Copyright © 1999, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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