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几乎所有的药物都会产生不良反应,有的不良反应还相当严重。一般来讲,药物不良反应不同于原有疾病的症状,如乙酰水杨酸、吲哚美辛引起哮喘;庆大霉素、链霉素导致耳聋;青霉素、碘制剂造成的过敏性休克等等。不过,有些药物反应与原有疾病的症状类似或相同,如可乐定、甲基多巴等降压药,长期服用者突然停用,会造成“反跳”现象,即血压剧升、心率加速,甚至可能出现颅内出血。心绞痛病人贸然停用普萘洛尔,可能会引起比用药前更为严重的症状,甚至发生心肌梗死。对于药物不良反应,要及时、准确地给予判定,才可以将危害减小到最低程度。
Almost all drugs will have adverse reactions, and some adverse reactions are quite serious. In general, adverse drug reactions are different from the symptoms of the original disease, such as acetylsalicylic acid, indomethacin cause asthma; gentamicin, streptomycin lead to deafness; penicillin, iodine caused by anaphylactic shock and so on . However, some drugs respond to the symptoms of the original disease with similar or the same, such as clonidine, methyldopa and other antihypertensive drugs, long-term users suddenly disabled, will cause “rebound ” phenomenon, that is, Accelerated heart rate, and even intracranial hemorrhage may occur. The withdrawal of propranolol from patients with angina pectoris may cause more serious symptoms than before medication and may even cause myocardial infarction. Adverse reactions to drugs, to be timely and accurate judgment, it can be reduced to a minimum.