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患者,男性,63岁,前列腺癌手术后,因肿瘤已转移至骨,正接受放射治疗,现已出现晚期癌痛症状,特别当患者坐时,感觉右髋疼痛加重,运动时后背疼痛加剧。该患者每日口服氧可酮+对乙酰氨基酚用于止痛,但疼痛日益加重。若患者需继续服用镇痛药缓解癌症疼痛,最好选用下列哪一种药A、啡诺 B、可待因+阿司匹林 C、美沙酮 D、喷他佐 E、右丙氧芬 临床用于阿片类药急性中毒,解救呼吸抑制的药物是A、纳布啡 B、美沙酮 C、朵 D、洛贝林(山梗菜碱) E、纳洛酮
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