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17 Cards in this Set

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criteria for diagnosis of sinusitis
10-14 d of nasal discharge without improvement or
3 d purulent discharge and T>102
diagnosis of chronic rhinosinusitis
symptoms >12 weeks with therapy and CT changes
When do the maxillary sinuses form?
3rd-4th gestational month, present at birth
When do the ethmoid sinuses form?
3rd-4th gestational month, present at birth
When do the frontal sinuses form?
By 5th-6th birthday
where are the sphenoid sinuses?
immediately anterior to the pituitary fossa and just behind the posterior ethmoids.
How do the maxillary sinuses drain?
an ostium high on the medial wall of the sinus cavity
How do the ethmoid sinuses drain?
Each air cell drains independently through an ostium into the middle meatus
What is the ostiomeatal complex (OMC)?
the area between the middle and inferior turbinates that represents the confluence of the drainage areas of the frontal, ethmoid, and maxillary sinuses
What abnormalities are associated with immotile cilia syndrome?
middle ear disease, and 50% of patients have situs inversus
When are plain films used in diagnosing acute bacterial sinusitis?
Recurrent sinusitis with vague symptoms or poor response to therapy
What are the findings on x-ray for acute bacterial sinusitis?
opacification, mucosal thickening of at least 4 mm, or an air-fluid level.
When is CT used for diagnosis of sinusitis?
complicated ABS or who are being considered as surgical candidates (for either recurrent or chronic sinusitis).
Can CT distinguish between mucosal abnormality in acute sinusitis and simple URI?
no
which bacteria are found in acute sinusitis?
Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis
what antimicrobial therapy is used for sinusitis?
Amoxicillin if uncomplicated and no recent treatment with antibiotics
what antimicrobial therapy is used for complicated sinusitis?
Cefotaxime with or without vancomycin