APD_(50) of ventricular myocardial cells of guinea pigs in situ was shown to be prolonged by ip injection of DMT 1.5 mg/kg.

• 腹腔注射DMT1.；5mg/kg；对抗哇巴因诱发豚鼠心律失常；使豚鼠心室肌细胞动作电位平台期延长。