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一位住院患者,因便秘要求其主治医生给其用通便药。医生答应患者晚上给其口服药通便灵,但未开临时医嘱。第二天早晨,护士因患者晚间未服通便灵受到埋怨,护士为此对该医生产生极大不满。导致医护关系冲突的主要原因为()
A . 角色心理差位
B . 角色压力过重
C . 角色理解欠缺
D . 角色权利争议
E . 角色期间冲突
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