Ramkumar Venkateswaran
Department of Anaesthesiology, Kasturba Medical College, Manipal University, Manipal, Karnataka, India.
Indian J Anaesth. 2011 Sep;55(5):442-7. doi: 10.4103/0019-5049.89863.
Awake intubation is usually performed electively in the presence of a difficult airway. A detailed airway examination is time-consuming and often not feasible in an emergency. A simple 1-2-3 rule for airway examination allows one to identify potential airway difficulty within a minute. A more detailed airway examination can give a better idea about the exact nature of difficulty and the course of action to be taken to overcome it. When faced with an anticipated difficult airway, the anaesthesiologist needs to consider securing the airway in an awake state without the use of anaesthetic agents or muscle relaxants. As this can be highly discomforting to the patient, time and effort must be spent to prepare such patients both psychologically and pharmacologically for awake intubation. Psychological preparation is best initiated by an anaesthesiologist who explains the procedure in simple language. Sedative medications can be titrated to achieve patient comfort without compromising airway patency. Additional pharmacological preparation includes anaesthetising the airway through topical application of local anaesthetics and appropriate nerve blocks. When faced with a difficult airway, one should call for the difficult airway cart as well as for help from colleagues who have interest and expertise in airway management. Preoxygenation and monitoring during awake intubation is important. Anxious patients with a difficult airway may need to be intubated under general anaesthesia without muscle relaxants. Proper psychological and pharmacological preparation of the patient by an empathetic anaesthesiologist can go a long way in making awake intubation acceptable for all concerned.
清醒插管通常在存在困难气道的情况下择期进行。详细的气道检查耗时且在紧急情况下往往不可行。一个简单的气道检查1-2-3规则能让人在一分钟内识别潜在的气道困难。更详细的气道检查能更好地了解困难的确切性质以及为克服困难应采取的行动方案。当面对预期的困难气道时,麻醉医生需要考虑在不使用麻醉剂或肌肉松弛剂的情况下在清醒状态下确保气道安全。由于这可能会给患者带来极大不适,必须花费时间和精力在心理和药物方面为这类患者做好清醒插管的准备。心理准备最好由麻醉医生用简单易懂的语言解释操作来启动。可滴定使用镇静药物以在不影响气道通畅的情况下使患者感到舒适。额外的药物准备包括通过局部应用局部麻醉剂和适当的神经阻滞来麻醉气道。面对困难气道时,应调用困难气道推车并向对气道管理有兴趣和专业知识的同事求助。清醒插管期间的预充氧和监测很重要。气道困难的焦虑患者可能需要在不使用肌肉松弛剂的全身麻醉下进行插管。富有同情心的麻醉医生对患者进行适当的心理和药物准备,对于使所有相关人员都能接受清醒插管大有帮助。