虽然硝酸甘油被常规地用于治疗心绞痛,但由于硝酸甘油能引起动脉压降低,并使心率反射性地增速,因此,对于急性心肌梗塞所致的缺血性疼痛,一贯认为禁用硝酸甘油。然而,影响心肌氧供应与氧需要平衡的各种因素有十分复杂的相互关系。因此,要预先估计一种药物或治疗方法对心肌的净作用就比较困难,特别是象硝酸甘油这种能改变后 Although nitroglycerin is routinely used for the treatment of angina, nitroglycerin has been consistently considered disabling for ischemic pain caused by acute myocardial infarction, since nitroglycerin causes a reduction in arterial pressure and reflexes the heart rate. However, various factors that affect the balance between myocardial oxygen supply and oxygen have very complex interrelationships. Therefore, it is difficult to predict in advance the net effect of a drug or treatment on myocardium, especially if it can be changed like nitroglycerin