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有些作者报告普萘洛尔抑制室性心律失常的有效率可达70%,然有效血药浓度相差很大.约40%治疗有效者的血药浓度(150～1,000μg/ml)远超过阻滞β肾上腺素能受体所需的血药浓度(25～150ng/ml).
Some authors report that propranolol is effective in inhibiting ventricular arrhythmias up to 70%, whereas effective plasma concentrations vary widely. Approximately 40% of the therapeutically effective plasma concentrations (150-1,000 μg / ml) far outweigh the resistance Hysteretic beta adrenergic receptor required plasma concentration (25 ~ 150ng / ml).