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许多放射学家对患较轻微的皮肤病学反应(荨麻疹和搔痒)的病人给予H_1抗组织胺药。一旦反应已发生,虽然没有这些药物可减轻皮肤反应严重性的确切证据,但它们能缓解一些症状。成人苯海拉明使用25-50mg(常一次用50mg)。对中度或严重反应的病例采用静脉或肌肉注射法更可取。西米替丁可给4-8mg/kg,正常成人用300-mg。通常稀释于5%葡萄糖内静脉注射,于15分钟以上注完。如果症状复发,这些抗组织胺药可在1-2天内每6小时给一次。支气管扩张药——支气管扩张药用于那些包括支气管痉挛的过敏反应病人。氨茶碱和特普他林通常有效。前者是磷酸二酯酶制剂,可增加细胞内环
Many radiologists give H_1 antihistamines to patients with milder dermatological reactions (urticaria and pruritus). Once the reaction has occurred, although these drugs do not provide definitive proof of the severity of the skin reaction, they can relieve some of the symptoms. Adult diphenhydramine uses 25-50 mg (usually 50 mg once). It is preferable to use intravenous or intramuscular injections for moderately or severely affected cases. Cimetidine can give 4-8mg/kg, and normal adults use 300-mg. Usually diluted in 5% glucose intravenous injection, finished in more than 15 minutes. If symptoms recur, these antihistamines can be given every 6 hours for 1-2 days. Bronchodilators - bronchodilators are used in patients with allergic reactions including bronchospasm. Aminophylline and catallin are usually effective. The former is a phosphodiesterase that increases the intracellular loop