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多巴胺和多巴酚丁胺是两个最常用的正性肌力药物。本文应用声学测微技术,结合高保真压力测定方法所得到的压力-容积数据分析,比较20例旁路移植术后病人对多巴胺和多巴酚丁胺的心室收缩反应。这种方法的优点是所测定的心肌作功相对地不受前、后负荷的影响。方法:20例系接受主动脉冠状动脉旁路移植术,但无低排状态的病人,术后16～20小时给予多巴胺和多巴酚丁胺。在复温与撤离体外循环前期间,
Dopamine and dobutamine are the two most commonly used inotropic drugs. In this paper, acousto-micromethod was used in combination with pressure-volume data analysis of high-fidelity pressure measurement to compare the ventricular contractile response of dopamine and dobutamine to 20 patients after bypass surgery. The advantage of this method is that the measured myocardial work is relatively unaffected by the anterior and posterior loads. METHODS: Twenty patients undergoing aortic coronary artery bypass grafting, but without a low-grade status, received dopamine and dobutamine 16 to 20 hours postoperatively. During rewarming and withdrawal before cardiopulmonary bypass,