Bronchiolitis Flashcards
stridor is pathognomonic for upper aiway ___
narrowing
theres a tendency for the airway to ___ when you breathe in
inspiration
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wheeze is an ____ sounds due to intra-thoracic dynamic airway ___. such as:
wheeze is an EXPIRATORY sound due to intra-thoracic dynamic airway collapse.
- astham or bronchiolitis
crackles are inspiratory or expiratory and are intermittent. sounds like ____
velcro
If someone presents with RTI/bronchiolitis, who does poorly?
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huge factor that increases the number of infections/bronchiolitis per year
if they are in day care
this to check on PE and history if you suspect a LTI or bronchiolitis
- can they complete sentences?
- vitals
- saturation
- RR and HR!
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normal resp rates for infants
30-60
![](https://s3.amazonaws.com/brainscape-prod/system/cm/337/358/420/a_image_thumb.png?1614121879)
inspiratory muscle use/indications that there is labored breathing
expiratory muscles
inspiratory: nasal flare
scalenes and SCM
tripodding; pec pulls chest wall open
intercostals
expiratory: abdominal muscles
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definition of bronchiolitis
VIRAL infection of the lower respiatory tract characterized by inflammation, edema and necrosis of epithelial cells lining small airways, increased mucus production and bronchospasm
epidemiology bronchiolitis
at 2 years, 90% have had RSV
![](https://s3.amazonaws.com/brainscape-prod/system/cm/337/358/529/a_image_thumb.png?1614122002)
in addition to RSV, what other viruses cause bronchiolitis
human metapneumoviris, para influenzea, influenza, adenovirus
![](https://s3.amazonaws.com/brainscape-prod/system/cm/337/358/632/a_image_thumb.png?1614122173)
bronchiolitis pathophysiology
mucus buildup and inflamed tissue. causes necrosis and loss of epithelium. constriction. smooth muscle tightens around bronchiole tubes. alveoli collapse
ex/ in RSV. major mucus and inflammation causes cell to sluff off (necrotize) and then clog everything up. Causes “synsytium”
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RSV clinical course of bronchiolitis
- incubation period (2-8 days)
- upper respiratory infection: 1-3 days
- worsening lower airway disease: 3-5 days
- full recovery: 2-8 weeks
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