引起血管神经性水肿的是（）
A.碘化物
B.β受体拮抗剂
C.甲状腺激素
D.反射性131I
E.硫脲类
参考答案：A
解析：应用碘化物可在用药后立即或几小时后发生急性反应，主要表现为血管神经性水肿，上呼吸道水肿及严重喉头水肿；过量的甲状腺激素可引起甲状腺功能亢进的临床表现，在老人和心脏病患者中，可发生心绞痛和心肌梗死，可用β受体阻断药对抗，停用甲状腺激素；服用硫脲类常见的不良反应有瘙痒、药疹等过敏反应，严重不良反应有粒细胞缺乏症，一般发生在治疗后的2~3个月内，故应定期检查血象，若用药后出现咽痛或发热，立即停药则可恢复；I辐射只限与甲状腺内，易致甲状腺功能低下，故应严格掌握剂量和密切观察有无不良反应，一旦发生甲状腺功能低下可补充甲状腺激素对抗之；长期服用碘化物可诱发甲亢。
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