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