Wednesday, July 10, 2013

7/10/2013

7/10/2013

Answers:

What is the narrowest portion of the airway in children less than 5?
A) Cricoid cartilage
B) Thyroid cartilage
C) True vocal folds
D) False vocal folds
Until the age of five the cricoid cartilage is considered the narrowest portion of the airway.  In adults the glottis is the narrowest section.
 When a liquid is flowing through a tube, what is the flow rate proportional too?

r^4.  Thus small changes in airway diameter make a large difference in airflow.


MC Question:
What strategy is used to decrease the incidence of subglottic stenosis in intubated children?  
A) Nasotracheal intubations 
B) Using uncuffed tubes 
C) Using smaller tubes 
D) All of the above 
E) None of the above
Free Response Questions:
When dealing with laryngeal lesions what are the main advantage and disadvantage of using lasers versus microdissection?

Quick Facts:
Laryngotracheobronchitis (Croup)
-Most common infectious cause of airway obstruction in kids.
-Usually present in ages 6 month - 3 yrs.
-Viral: often paraflu.
-Presents as gradual onset barking cough, stridor (inspiratory), hoarseness after URI.  -Lasts 3-5 days but can go on for up to 2 weeks. 
-Dx clinically, xray may show “steeple” sign.
-Most cases are mild and can be managed at home.  If severe give racemic epi nebulizer and steroids. If no responsive to medical management, intubation may be needed.

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