Chapter 2: Airway Management Flashcards
What encompasses airway management?
It encompasses the assessment, establishment, and protection of the airway in combination with effective oxygenation and ventilation.
What are the anatomical boundaries of the nasal airway?
Nasal airway extends from the nostrils to the posterior nares or choanae.
Why do patients mouth breath when they require high flow rate?
It is because the resistance to air flow through the nose is double that of it through the mouth.
The anatomical boundaries of the nasopharynx?
From the posterior nares or choanae to the level of soft palate
What structures are the principal impediment to airflow through the nasopharynx?
The tonsillar lymph nodes
What are the anatomical boundaries of oral cavity?
Teeth anteriorly, hard and soft palate above and tongue below.
What are the anatomical boundaries of the oropharynx?
It extends from the soft palate to the tip of the epiglottis
What structure is the principal source of obstruction in the oropharynx?
Tongue
What are the actions of genioglossus muscle?
Move the tongue forward during inspiration and dialate the pharynx
What are the anatomical boundaries of laryngopharynx?
It extends from the epiglottis to the upper border of the cricoid cartilage at the level of C6.
What are the functions of larynx ?
Phonation and acts as a valve to protect lower airway
What are the cartilages that make up the larynx?
Thyroid, cricoid, arytenoids, corniculates and epiglottis.
What is the origin and function of epiglottis?
It originates from the hyoid bone and the base of the tongue. It prevents aspiration by covering the glottis during swallowing.
What is vallecula?
It is an anatomical space at the base of the tongue which is formed posteriorly by the epiglottis and anteriorly by the anterior pharyngeal wall.
What is laryngeal inlet?
It is the opening of the larynx bounded by the epiglottis, aryepiglottic folds, and the arytenoid cartilage
