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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/26712


    標題: Class I antiarrhythmic drugs produced a spinal anesthetic effect in rats
    作者: Huang, Kuo-Lun
    Chu, Chin-Chen
    Kuang-I.Cheng
    Wang, Jhi-Joung
    Yeh, Mou-Yung
    貢獻者: 休閒保健管理系
    關鍵字: Antiarrhythmic
    Quinidine
    Mexiletine
    Flecainide
    Spinal anesthesia
    日期: 2011-11
    上傳時間: 2013-06-21 16:52:21 (UTC+8)
    出版者: Elsevier
    摘要: Class I antiarrhythmic drugs are commonly used to treat cardiac rhythm disorders. Some of those drugs were recently reported to have both a cutaneous analgesic and a neural blocking effect. We evaluated whether these drugs have a spinal anesthetic effect. Three Class I antiarrhythmic drugs (class IA: quinidine, IB: mexiletine, and IC: flecainide) were tested. After they had been intrathecally injected in rats, the potencies and durations of these drugs on spinal anesthesia were recorded. Bupivacaine, a commonly used local anesthetic, and 5% dextrose solution were used as controls. Bupivacaine, flecainide, quinidine, and mexiletine produced a dose-related spinal blockade of motor function, proprioception, and nociception, but dextrose solution produced no spinal anesthetic effect. The descending order of potency was bupivacaine > flecainide > quinidine > mexiletine (p < 0.05 for all differences). On an equipotent basis, flecainide, quinidine, and bupivacaine produced similar durations of action, all of which were significantly longer than that of mexiletine (p < 0.05). In conclusion, intrathecal injections of Class I antiarrhythmic drugs produced a dose-related spinal anesthetic effect. These drugs may be potential candidates for developing new local anesthetics.
    關聯: neuroscience letters 505(2), pp. 216-220
    Appears in Collections:[休閒保健管理系(所)] 期刊論文

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