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🚦 先看哪位患者？ · 第1课，共6课 · 6 min

气道、呼吸、循环：决胜规则

Airway, Breathing, Circulation: The Tiebreaker

🫁 四位患者，一名护士，一个问题。每个选项听起来都很紧急。考试并不想让你感到紧急。它想让你在一秒钟内应用一条规则：谁无法呼吸？

🫁 Four clients, one nurse, one question. Every option sounds urgent. The exam does not want you to feel urgent. It wants you to apply one rule in one second: who cannot breathe?

💡 核心要点

先气道，再呼吸，再循环，但有两点例外：成人、儿童或婴儿心脏骤停时采用C-A-B（出生时的新生儿先通气），预期内的稳定表现则输给意想不到的变化。

Airway, then breathing, then circulation, with two exceptions: cardiac arrest in an adult, child or infant is C-A-B (a newborn at birth gets ventilation first), and an expected stable finding loses to an unexpected change.

🧠 为什么重要

当选项涉及不同的患者或不同的身体系统时，先按气道排序，其次是呼吸，第三是循环。气道阻塞或受威胁（喘鸣、颈部手术后肿胀、过敏反应、意识水平下降伴呕吐）胜过一切。接下来是呼吸：呼吸频率、用力程度、血氧饱和度、胸腔引流管问题。然后是循环：出血、胸痛、低血压、心律失常。两点注意事项。第一，发生心脏骤停的成人、儿童或婴儿要先做胸外按压（C-A-B），因为没有循环，其他一切都无从谈起。出生时的新生儿复苏是例外：有效的通气优先，只有在有效通气后心率仍低于60/min时才加上按压。第二，预期之内且稳定的ABC问题（慢性COPD患者平常的饱和度为90%）可能会输给另一位患者意想不到的变化。

When options involve different clients or different body systems, rank by AIRWAY first, BREATHING second, CIRCULATION third. An obstructed or threatened airway (stridor, swelling after a neck surgery, an anaphylactic reaction, a decreased level of consciousness with vomiting) beats everything. Next comes breathing: respiratory rate, effort, oxygen saturation, chest tube problems. Then circulation: bleeding, chest pain, hypotension, arrhythmias. Two cautions. First, an adult, child or infant in CARDIAC ARREST gets compressions first (C-A-B), because without circulation nothing else matters. Newborn resuscitation at birth is the exception: effective ventilation comes first, and compressions are added only if the heart rate stays below 60/min despite effective ventilation. Second, an ABC problem that is EXPECTED and stable (a chronic COPD client at a usual saturation of 90%) can lose to an unexpected change in another client.

🏥 真实场景

🏥 选项：一位髋关节置换术后两天的患者，疼痛6/10；一位甲状腺切除术后新出现喘鸣的患者；一位IV泵正在报警的患者；一位要求出院指导的患者。颈部手术后出现喘鸣提示气道正在关闭。原因包括肿胀、血肿、低钙性喉痉挛或双侧喉返神经损伤。疼痛、输液泵和教学全都要等。正确答案是你会跑过去处理的那一个，而不是你拖延了会感觉最糟的那一个。

🏥 Options: a client two days post-hip replacement with pain 6/10; a client with a new onset of stridor after thyroidectomy; a client whose IV pump is beeping; a client requesting discharge teaching. Stridor after neck surgery signals an airway that is closing. Causes include swelling, a hematoma, hypocalcemic laryngospasm or bilateral recurrent laryngeal nerve injury. Pain, pumps and teaching all wait. The right answer is the one you would run to, not the one you would feel worst about delaying.

📌 要点总结

  • 气道胜过呼吸，呼吸胜过循环Airway beats breathing beats circulation
  • 喘鸣、肿胀、过敏反应和意识水平下降都是气道急症Stridor, swelling, anaphylaxis and a falling level of consciousness are airway emergencies
  • 心脏骤停是例外：先按压Cardiac arrest is the exception: compressions first

📖 本课术语

ABCs: 第一优先级规则：气道问题高于呼吸问题，呼吸问题高于循环问题。

✅ 自我测试

护士应先评估哪位患者？Which client should the nurse assess first?
  1. 一位有慢性咳嗽、血氧饱和度稳定在91%的患者A client with a chronic cough and a stable oxygen saturation of 91%
  2. 一位被蜜蜂蜇伤后诉喉部紧缩感、声音嘶哑的患者A client reporting throat tightness and a hoarse voice after a bee sting
  3. 一位午餐前血糖为180 mg/dL的患者A client with a blood glucose of 180 mg/dL before lunch
  4. 一位切口疼痛3/10的患者A client with 3/10 incisional pain

答案: B · 一位被蜜蜂蜇伤后诉喉部紧缩感、声音嘶哑的患者

被蜇伤后喉部紧缩和声音嘶哑是过敏反应导致气道肿胀的早期征象。气道先于其他一切。血氧饱和度为91%的患者是慢性、稳定的问题，所以这个低数值是预期之内的，而不是新的威胁。

Throat tightness and hoarseness after a sting are early signs of airway swelling from anaphylaxis. Airway comes before all the others. The client with an oxygen saturation of 91% has a chronic, stable problem, so that low number is expected rather than a new threat.

发现一位患者无脉搏、无呼吸。根据现行复苏指南，第一个行动是什么？A client is found pulseless and not breathing. Using current resuscitation guidance, what is the first action?
  1. 开放气道并给予两次呼吸Open the airway and give two breaths
  2. 开始胸外按压Begin chest compressions
  3. 用非重复呼吸面罩吸氧Apply oxygen by non-rebreather
  4. 测量血压Check the blood pressure

答案: B · 开始胸外按压

心脏骤停时顺序是C-A-B：先按压以恢复循环，然后是气道和呼吸。

In cardiac arrest the sequence is C-A-B: compressions first to restore circulation, then airway and breathing.

哪位有呼吸问题的患者应先被查看？Which client with a breathing concern should be seen first?
  1. 一位COPD患者，平常的基线饱和度为89%，吸氧2 LA client with COPD at the usual baseline saturation of 89% on 2 L of oxygen
  2. 一位哮喘患者，喘息已经停止，喘得说不出话A client with asthma whose wheezing has stopped and is too breathless to speak
  3. 一位焦虑、每分钟呼吸22次的患者A client who is anxious and breathing 22 times per minute
  4. 一位要求使用诱发性肺量计的患者A client requesting an incentive spirometer

答案: B · 一位哮喘患者，喘息已经停止，喘得说不出话

哮喘中的“沉默胸”意味着空气已不再流动。这是即将发生呼吸衰竭的征象，远比响亮的喘息更危险。COPD患者的饱和度较低，但89%是该患者吸氧2 L时的平常基线，所以是预期之内且稳定的。

A 'silent chest' in asthma means air is no longer moving. It is a sign of impending respiratory failure, far more dangerous than loud wheezing. The client with COPD has a low saturation, but 89% on 2 L of oxygen is that client's usual baseline, so it is expected and stable.

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