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Rapid Suppression of Near-fatal Sustained Ventricular Arrythmias with High-dose Oral Amiodarone Kazuki Ito 1 , Hiroki Sugihara 2 , Yoshihiko Adachi 1 , Takuji Tanabe 1 , Takato Hikosaka 1 , Kan Zen 1 , Satoshi Yoneyama 1 , Shuuji Katoh 1 , Tomoki Nakamura 2 , Akihiro Azuma 1 1Department of Cardiology, Murakami Memoryal Hospital, Asahi University 2Second Department of Medicine, Kyoto Prefectural University of Medicine Keyword: アミオダロン , 大量投与 , 心室性不整脈 , 急性効果 , Ventricular Arrythmias , Amiodarone , High dose loading , rapid treatment pp.1171-1177
Published Date 2000/11/15
DOI https://doi.org/10.11477/mf.1404902195
  • Abstract
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A major disadvantage of conventional amiodaronetherapy is the long delay between initiation of therapyand arrhythmia suppression. In this study, the hypothe-sis was tested that near-fatal ventricular arrhythmiawould be suppressed rapidly by a high-dose oralamiodarone. We studied 8 patients who went into shockafter sustained ventricular tachycardia and /orventricular fibrillation. An initial dose of 800mgamiodarone was given soon after entry into the state ofshock, and a second dose of 400 mg amiodarone wasgiven after 12 hours. After 24 hours, a dose of 200mgamiodarone was given every 12 hours. Holter electrocar-diograms over 24 hours revealed that the near-fatalventricular arrythmias evidently decreased 2 hours afterinitiation of the treatment, and they had disappearedcompletely after 5 hours. Although one patient sufferedagain from ventricular tachycardia 8 hours later, anaditional dose of 400 mg of amiodarone suppressed it.Although usual-dose therapy of amiodarone takesabout 2 weeks to take effect, high-dose therapy ofamiodarone took only several hours to suppress near-fatal ventricular arrythmias. High-dose loading ofamiodarone might be useful for rapid treatment of life-threatening sustained ventricular arrythmias.


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

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