airway obstruction Flashcards
1
Q
what are some special anatomical features in a child?
A
- large head
- small nares
- neonates are obligate nasal breathers
- tongue size large
- small, soft larynx (higher position C1)
- weak neck muscles, floppy head
- narrow subglottish (3.5mm at the cricoid)
2
Q
what 2 physiological principles can describe the flow of air in the airway?
A
- Poiseuille’s equation
- Bernoulli Principle/Venturi effect
3
Q
describe stridor?
A
-high pitched harsh noise due to turbulent airflow resulting from airway obstructions
4
Q
describe stertor?
A
-low pitch sonorous sound arising from nasopharyngeal airway
5
Q
what is often found enlarged in children with obstructive sleep apnoe?
A
enlarged adenoids or tonsils
6
Q
what is the management of respiratory failure?
A
A,B,C: resus
- Oxygen
- Heliox
- Steroid
- Adrenaline
- Flexible fibre optic endoscopy examination of the airway
- Secure airways with ET tube/tracheostomy
- treat underlying pathology
7
Q
what are the classic allergic rhinitis symptoms?
A
nasal discharge and blocked nose
8
Q
A
intermittent
9
Q
A
- allergen avoidance
- nasal steroid spray
- antihistamine
10
Q
A
false
11
Q
A
- orbital abscess
- cavernous sinus thrombosis
- meningitis
12
Q
A
7-14 days after event
13
Q
A
- nasal obligate breathers
- soft small larynx
14
Q
A
true
15
Q
A
foreign body