心肌梗塞(MI)时止痛不仅对病人的感觉、而且对循环反应如心率、血压、心输出量增加也是重要的。其治疗方法包括麻醉镇痛药与各种直接或间接改善心肌缺血的药物。一、麻醉镇痛药最常见的是吗啡、杜冷丁、镇痛新、美撒痛和海洛因(二乙酰吗啡)等.对吗啡和海洛因研究最多,其血液动力学效应比杜冷丁好,应用更普遍。现认为它们的镇痛效果是增加痛觉阈值与减少交感神经——肾上腺能反应。急性心肌梗塞(AMI)时,由于疗效是根据注射后疼痛减轻程度来评价的,且因疼痛病程也 Pain relief during myocardial infarction (MI) is important not only for the patient, but also for circulating responses such as heart rate, blood pressure, and cardiac output. Its treatments include narcotic analgesics and a variety of drugs that directly or indirectly improve myocardial ischemia. First, the most common narcotic analgesics are morphine, dolantin, a new analgesic, methadone and heroin (diacetyl morphine), etc. For morphine and heroin most of the studies, the hemodynamic effect of pethidine is better, more application universal. Now that their analgesic effect is to increase the pain threshold and reduce sympathetic - adrenergic reactions. Acute myocardial infarction (AMI), because the efficacy is based on the degree of pain relief after injection to evaluate, and due to pain course also