**6.5 Ultrasound-guided emergency cricothyrotomy and elective transtracheal cannulation**

For securing surgical airways, identification of the exact location of the trachea is very important to manage the difficult airway in both elective and emergency scenario. With the help of US, the trachea can be visualized before both emergency cricothyrotomy and elective transtracheal cannulation. A visual guide to identify airway-related structures is presented in **Figures 3** and **4**. This is useful in anticipated difficult airway such as neck swelling, thyroid mass, and Ludwig's angina where localization of trachea is difficult.
