No Change in Serum Concentrations of Amiodarone and Desethyl-amiodarone in Vicinity of Cardiopulmonary Bypass Surgery : A case report

  • Nakakura Ichiro
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Yamashita Daisuke
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Kohrai Mutsuko
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Horibe Akemi
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Wada Kyoichi
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Kohara Nobuaki
    Department of Pharmacy, National Cerebral and Cardiovascular Center
  • Shimahara Yusuke
    Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center
  • Kobayashi Junjiro
    Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center

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Other Title
  • 体外循環施行前後ではアミオダロンおよびアミオダロン代謝物の血中濃度変化は認められない ~ 1症例報告 ~

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Abstract

It has been reported that cardiopulmonary bypass (CPB) surgery influences the pharmacokinetics of various drugs. In this study, we investigated serum concentrations of amiodarone (AMD) and desethyl-amiodarone (DEA), the amiodarone metabolite, in the vicinity of CPB. Our patient was taking amiodarone tablets because other antiarrhythmic agents had been ineffective against premature ventricular contraction and nonsustained ventricular tachycardia. The patient underwent aortic valve replacement under CPB for aortic stenosis, and serum concentrations of AMD and DEA were measured in the vicinity of the CPB surgery before and after it. There was no change in the serum concentrations (before CPB surgery; AMD : 0.71 μg/mL, DEA : 0.47 μg/mL, after CPB surgery; AMD : 0.85 μg/mL, DEA : 0.46 μg/mL). During and after surgery, no atrial or ventricular tachyarrhythmia was observed.<br>We considered that serum concentrations of AMD and DEA were not influenced by CPB because of amiodarone's high protein binding ratio and large distribution volume, which are characteristics of this drug.

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