感染控制与患者安全
方法
- 对每位患者都从标准预防开始:手卫生、针对预期暴露的个人防护装备、安全使用锐器。
- 按传播途径追加预防措施:接触传播(隔离衣、手套)、飞沫传播(外科口罩)、空气传播(N95、负压病房)。
- 保持无菌物品的无菌状态:如有疑问就视为不无菌;更换,绝不擦拭。
- 预防环境中的伤害:防跌倒措施,约束仅作为最后手段,火灾时用 RACE 和 PASS。
- 核对给药的正确原则、两个身份识别信息,以及对高警示药物的额外保障;报告差错和险兆事件。
公式表、每个专题的关键方法步骤和 6 道练习题,完整解答附在最后。
A patient on contact precautions must be taken to another department for a test. What is correct?
Ten minutes into a red blood cell transfusion, the patient reports chills and low back pain and has a new fever. What should the nurse do first?
How does pursed-lip breathing help a patient with COPD?
A patient going home on warfarin has been taught about the drug. Which statement shows a need for further teaching?
母乳中的抗体提供哪种免疫?
19世纪40年代,伊格纳兹·塞麦尔维斯降低了维也纳一家产科诊所的产褥热死亡率。他引入了什么措施?
答案: C · Cover wounds, give the patient a clean gown and tell the receiving department
Transport is limited to what is necessary. Infected areas are contained or covered, the patient wears a clean gown, the receiving area is informed and equipment is cleaned afterwards.
答案: B · Stop the transfusion
These signs suggest an acute transfusion reaction, possibly hemolytic. The nurse stops the transfusion at once, keeps the IV open with normal saline through new tubing, assesses the patient and notifies the provider and blood bank.
答案: C · It keeps the airways open longer and slows the breathing
Breathing out slowly through pursed lips creates back-pressure that keeps small airways open, helping to empty trapped air and reducing breathlessness.
答案: D · "I'll stop eating all green vegetables from now on."
Vitamin K in green vegetables opposes warfarin, so a stable intake keeps the INR steady. Cutting them out suddenly can make the INR rise; bleeding signs and blood tests are correct points.
答案: A · 天然被动免疫
通过母乳传递的抗体(主要是 IgA)提供自然获得的被动免疫。由于没有形成记忆细胞,这种免疫持续时间短。
答案: C · 在检查产妇之前用漂白粉(氯化石灰)溶液洗手
塞麦尔维斯注意到,由同时做尸检的医生负责的病房死亡率更高。用漂白粉进行手消毒使死亡人数大幅下降,而那时细菌学说还远未被接受。
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